CN211352201U - Communication anti-interference performance tester for finger control equipment - Google Patents
Communication anti-interference performance tester for finger control equipment Download PDFInfo
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- CN211352201U CN211352201U CN202020282904.9U CN202020282904U CN211352201U CN 211352201 U CN211352201 U CN 211352201U CN 202020282904 U CN202020282904 U CN 202020282904U CN 211352201 U CN211352201 U CN 211352201U
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Abstract
The utility model discloses a communication anti-interference performance tester of finger control equipment, which comprises a host used for testing a radio station; the power adapter supplies power to the host and converts an alternating current 220V power supply into a 12V direct current power supply; and a radio frequency test cable for connecting the host and the radio station antenna port; the audio connecting cable is used for connecting the host and the radio station audio port; and an interference input connecting cable for connecting the host computer with external interference input; the host comprises a machine body and a control panel arranged on the inner side of the machine body, wherein the control panel comprises a main control module; and the front panel module with the host system communication, the utility model discloses a instruct accuse to equip the anti-interference capability test appearance of communication, carry out the portable guarantee equipment of conventional test and anti-interference test to the main performance index that instructs accuse communication to equip, can accomplish and decide conventional tests such as frequently, frequency hopping, error code to and the anti-interference index test under the interference environment.
Description
Technical Field
The utility model relates to a communication anti-interference capability test appearance is equipped in finger control belongs to electromagnetic signal test equipment technical field.
Background
In a modern battle mode, battlefield environments are increasingly complex, and as one of core equipment on an information battlefield, communication equipment must have strong electromagnetic environment adaptability, otherwise the information control right of communication commands is difficult to obtain, and the initiative right of the battlefield is more difficult to ensure; therefore, ensuring that the communication equipment keeps good communication performance under complex electromagnetism is a prerequisite condition for guaranteeing that the army obtains the 'information making right' and is an important task for guaranteeing the maintenance of the communication equipment; however, at present, communication guarantee research of troops aiming at communication equipment in a complex electromagnetic environment is lacked, a complex interference simulation environment needs to be built for testing the anti-interference performance of the communication equipment, various typical interferences are generated, expensive professional equipment is needed, the operation is complex, and the technical level requirement is high; maintenance support mechanisms at all levels are limited by various factors, and the anti-interference performance of the communication equipment cannot be tested in the stages of daily maintenance, routing inspection, maintenance and the like, so that the anti-interference performance of the equipment is in an unknown state.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a instruct accuse to equip communication anti-interference capability test appearance carries out conventional test and anti-interference test's portable guarantee equipment to the main performance index that instructs accuse communication to equip, can accomplish and decide conventional tests such as frequently, frequency hopping, error code to and the anti-interference index test under the interference environment.
The utility model discloses a communication anti-interference performance tester of a finger control device, which comprises a host used for testing a radio station; the power adapter supplies power to the host and converts an alternating current 220V power supply into a 12V direct current power supply; and a radio frequency test cable for connecting the host and the radio station antenna port; the audio connecting cable is used for connecting the host and the radio station audio port; and an interference input connecting cable for connecting the host computer with external interference input; the host comprises a machine body and a control panel arranged on the inner side of the machine body, wherein the control panel comprises a main control module; the front panel module is communicated with the main control module, the interference module is communicated through an RS485 interface and used for outputting various interference signals, the intermediate frequency module is communicated through a main control intermediate frequency interface, and the radio frequency module is communicated with the main control intermediate frequency interface through the RS485 interface; the radio frequency module is in communication connection with an attenuator module which comprises an attenuator unit and provides 20dB/50W attenuation, and a calibration signal input interface and a calibration signal output interface are arranged on the radio frequency module; the attenuator module is provided with a duplex port; the main control module is also provided with a power supply interface, a LAN interface, a USB interface, an RS232 interface, an audio input interface and an audio output interface.
Furthermore, the main control module comprises a main control unit for completing data transmission, calculation, man-machine interaction and system control; the low-frequency channel unit is communicated with the main control unit, selects an audio source which is determined to enter the AA unit, selects a signal source which enters the oscilloscope, is used for switching and controlling an audio/baseband communication mode and is communicated with the audio input interface and the audio output interface; and the audio frequency generating unit is communicated with the low-frequency channel unit and is used for generating audio signals, generating single-tone or double-tone audio signals with controllable frequency and level and providing input for a radio station audio port; the audio analysis unit is communicated with the low-frequency channel unit and the main control unit and is used for testing audio frequency, level and SINAD; the baseband error code testing unit is communicated with the low-frequency channel unit and the main control unit and is used for comparing and testing error codes; the power supply module is electrically connected with an output power interface of the power adapter and is used for power supply voltage stabilization and startup key detection;
the front panel module comprises a keyboard unit which is electrically connected with the main control unit, consists of a keyboard circuit and rubber keys and is used for completing the scanning and reading of a keyboard matrix; the display unit is electrically connected with the main control unit, consists of an LCD display screen and a display signal switching circuit board and completes parameter input and display; the interface unit is electrically connected with the main control module and comprises interfaces except the N-type duplex port on the front panel, a power switch and a circular fast connector switching circuit board;
the radio frequency module comprises a waveform acquisition channel unit which is used for completing impedance matching and port protection of an input interface, completing power control, frequency conversion and filtering of an input signal and providing input for A/D sampling: and a waveform playback channel unit for filtering, frequency conversion and power control of D/A output signals, moving playback waveforms to radio frequency, and completing impedance matching of an output interface, port protection and final-stage signal driving; the input interface is communicated with the waveform playback channel unit and is used for synthesizing the interference signal and the modulation signal and realizing the waveform synthesis unit for synthesizing and outputting the interference signal; the interference unit is communicated with an input interface of the waveform synthesis unit and used for realizing the output of interference signals after receiving the parameter setting of the main control module; and an external interference interface which communicates with an input interface of the waveform synthesis unit and receives an external interference signal; and a selection switch in output communication with the waveform synthesis unit; the other input end of the selector switch is in communication connection with the attenuator module; the output end of the selection switch is connected with the input end of the waveform acquisition channel unit; the radio frequency local oscillator unit is communicated with the waveform playback channel unit and is used for frequency conversion of two local oscillators required by frequency conversion; the radio frequency control circuit unit is communicated with the main control unit and the waveform playback channel unit and is used for being in communication connection with an external controller, namely receiving commands from the main control module and controlling the radio frequency module; and a radio frequency power supply circuit unit for supplying power to each circuit of the radio frequency module; the radio frequency signal generating module is communicated with the radio frequency control circuit unit and is used for testing the sensitivity of the ultra-short wave radio station; the radio frequency signal generation module adopts DDS and DSP technologies to realize radio frequency signal generation, internal modulation, external modulation and level control thereof and realize the miniaturization and low power consumption design of a radio frequency signal source; finishing the radio frequency signal output of frequency range of 1.5 MHz-88 MHz, output level range of-10 dBm-0 dBm, FM modulation (150Hz/1kHz modulation frequency, 3kHz/5.6kHz frequency deviation) and GPSK/GMSK modulation (16 kbps-64 kbps data rate); the DDS module adopts a DDS chip with the model number of AD9954, the sampling rate is 400MHz, and a sinusoidal signal of 0-160 MHz can be generated; a 14bit digital-to-analog converter of an output part; the controller is adopted to control the AD9954 and measure the output signal of the AD 9954; a 120MHz low-pass filter is used in the DDS output part, a frequency spectrograph HP8560 is used for checking the RF characteristic, the frequency spectrograph is set to be a 100kHz bandwidth test center level, and a measurement result shows that when the main frequency is in the range of 1.5 MHz-88 MHz, the stray and image frequency component levels are lower than the main frequency level by more than 55dB, so that the radio frequency signal index requirement required by a radio station test is met; the output level of the radio frequency generation unit is controlled by adopting an RMS detection and a program controlled attenuator; wherein the detector selects AD8361, and the frequency response of the AD8361 reaches 0.25dB when the AD8361 inputs the signal in the range of 3dBm between 30MHz and 88 MHz; at 0dBm input, there is only about 0.1dB of frequency response error; the programmable attenuator of the radio frequency generation unit selects AD8320, and the AD8320 can realize gain control of-10 dB to 26 dB; when the gain of the AD8320 is larger than 0dB, the linear characteristic is good, and the design requirement of a radio frequency signal source is met; when the gain is less than 0dB, the linear characteristic is deteriorated, for this reason, the AD8361 and the AD8320 are used for jointly controlling the RF output level in the radio frequency generation module, namely the AD8361 is used for monitoring the output level, and the AD8320 is adjusted to enable the output level to be in a 0dBm state; then, the attenuation value is changed by taking the control word of the AD8320 as a starting point to reach a control range of 30 dB; meanwhile, the digit number of the digital-to-analog converter in the AD9954 can be controlled, the change in the range of 10dB is realized, and the control of the RF output dynamic range of 40dB in total can be realized; the AD9954 is used for realizing frequency modulation conveniently, and only the on-chip frequency control word needs to be refreshed periodically; the intermediate frequency module comprises a waveform acquisition control unit which is connected with an A/D sampling output end of the waveform acquisition channel unit, a D/A output signal input end of the waveform playback channel unit and used for IF analog signal analog-to-digital conversion, data splicing, high-speed buffering and acquisition control; and a digital frequency meter unit in communication with the main control unit for digital frequency measurement; the analog demodulation unit is communicated with the main control unit, is used for FM and AM demodulation and modulation parameter measurement and comprises modulation frequency deviation and modulation amplitude; the sender frequency hopping measuring unit is communicated with the main control unit and is used for measuring sender frequency hopping parameters, wherein the sender frequency hopping measuring unit comprises frequency hopping rate and frequency hopping bandwidth; the intermediate frequency baseband error code testing unit is communicated with the main control unit and is used for realizing baseband error code testing together with the baseband error code testing unit on the mainboard module and finishing synchronous extraction and GMSK modulation; and the analog modulation generating unit is arranged at the D/A output signal input end of the waveform playback channel unit and is used for generating an FM signal, an AM signal and a fixed frequency signal.
Further, the interface of the attenuator module comprises an N-type interface of an N-type radio frequency socket; the radio frequency cable is arranged outside a front panel of a host and is connected with a radio station antenna port through a radio frequency cable; the SMA interface of the SMA type radio frequency socket is connected with the RF interface of the radio frequency module in the host through a semi-rigid shielding cable; the attenuator module has a frequency range: 1.5 MHz-100 MHz; n-end level range: -120 dBm- +47 dBm; SMA end level range: -100dBm to +27 dBm.
Furthermore, the interface of the radio frequency module comprises a master control radio frequency interface which adopts an RS485 serial signal as a power supply and a control signal; and adopt SMA socket, through the duplex mouth of half steel shield cable and the SMA interface connection of attenuator module: and adopt SMA socket, through half the calibration input interface that the SMA socket of the armoured cable and RFi on the back panel of the host computer connects; and adopt SMA socket, pass semi-steel shielded cable and SMA socket connection of RFo on the host computer back panel calibrate the output interface; and an IF output interface for inputting an IF signal from the digital intermediate frequency module; and an IF input interface for outputting an IF signal to the digital intermediate frequency module; outputting the standard clock to a standard clock source interface of the digital intermediate frequency module to provide a standard clock interface for the standard clock source interface; and a frequency meter interface for shaping the intermediate frequency signal into square wave pulse output; and a JTAG-RF interface for programming the radio frequency control MCU; the technical indexes of the radio frequency module are as follows:
1) radio frequency generation frequency: 1.5MHz to 100MHz, with error less than or equal to +/-2 multiplied by 10 < -7 > (0.2 ppm); 2) radio frequency output level: a duplex port is-120 dBm to-50 dBm, a calibration port is-60 dBm to 0dBm, and the error is less than or equal to +/-1.5 dB (temperature compensation at 23 +/-10 ℃ and +/-0.01 dB/DEG C); 3) single sideband phase noise: less than or equal to-90 dBc/Hz (100MHz is deviated by 20 kHz); 4) radio frequency measurement: 1.5MHz to 100MHz, the error is less than or equal to +/-2 multiplied by 10 < -7 > and the nominal value is +/-4 Hz; 5) radio frequency power measurement: duplex input is 0.05W-50W (17 dBm-47 dBm), and the error is less than or equal to +/-0.8 dB (the radio frequency voltage measurement accuracy is +/-10%); 6) maximum error of gain linearity: plus or minus 1 dB; 7) maximum error of frequency response: ± 1dB (in wideband mode); 8) radio frequency input/output impedance: 50 omega; 9) supply voltage: 6V +/-5 percent.
Furthermore, the interface of the interference module comprises an interference signal output interface which adopts an SMA socket and is used for outputting an interference signal into the radio frequency module unit; a PTK4 socket, a 5V power supply interface for providing a 5V/2A working power supply and a JTAG-MCU interface for programming and downloading a singlechip of the interference module are adopted; and the RS485 communication control interface is used for setting the parameters of the interference module and controlling the signal output by the main control unit, and the technical indexes are as follows: 1) frequency range: 1.5 MHz-100 MHz; 2) frequency resolution: 1 Hz; 3) internal time base: 1X 10-6; 4) interference output level range (peak power): -100dBm to 0 dBm; 5) interference source output level error: 1.5 dB.
Furthermore, the interface of the intermediate frequency module comprises an SPI and an ISA bus connected with the main control unit, and a main control intermediate frequency interface of RCLK, RDATA, TCLK and TDATA signals connected with the BERT unit; and adopt SMA socket, IF input interface used for IF signal from module input of the radio frequency; and an IF output interface which adopts an SMA socket and is used for outputting the IF signal to the radio frequency module; and adopt 2 SSMB sockets, input the standard clock source interface to the intermediate frequency module from the radio frequency module, provide the standard clock interface of the standard clock (produced by temperature compensated crystal oscillator on the radio frequency module) for it; and adopt SMA socket, by the frequency meter interface of the intermediate frequency shaping pulse of the radio frequency module input: and an SMA socket is adopted, and the oscilloscope signals enter an oscilloscope interface of the IFOSC unit from the SMA socket; a PTK4 socket is adopted to provide a 5V power supply interface of a 5V/2A working power supply; and a JTAG-FPGA interface for programming and downloading the FPGA; the technical indexes of the intermediate frequency module are as follows: 1) IF input frequency range: 1.5 MHz-100 MHz; 2) IF output frequency range: 1.5 MHz-100 MHz; 3) IF input level range: 0dBm to 6 dBm; 4) IF output level range: -7dBm to-1 dBm; 5) a/D converter sampling rate: a maximum of 250MSPS (10-bit); 6) d/a converter sampling rate: a maximum of 250MSPS (10-bit); 7) Memory capacity: greater than 2 GB; 8) supply voltage: +5V + -5%; 9) control signals: LVTTL 3.3V level; the modulation signal of the intermediate frequency module is generated and measured as follows: 10) the FM signal is generated: the modulation frequency range is 150 Hz-10 kHz, the frequency deviation range is 500 Hz-30 kHz, and the frequency deviation error is less than or equal to +/-5 percent of the nominal value +/-200 Hz; 11) AM signal generation: the modulation frequency range is 150 Hz-10 kHz, the amplitude modulation range is 0-99%, and the amplitude modulation error is less than or equal to +/-5% of the nominal value +/-1%; 12) FM measurement: the frequency deviation range is 500 Hz-30 kHz, and the error is less than or equal to +/-5 percent of the nominal value +/-200 Hz; 13) AM measurement: the amplitude adjusting range is 0-100% (modulation frequency is 1kHz), and the error is less than or equal to +/-5%, and the nominal value is +/-1%; 14) IF input/output impedance: 50 omega; the frequency hopping test indexes of the transmitter of the intermediate frequency module are as follows: 15) Measuring the frequency hopping rate: the range is 0-5000 hop/s (the acceptance test is 203hop/s), and the error is less than or equal to 2 percent of the nominal value +/-1 hop/s; 16) measuring the frequency hopping bandwidth: more than 57MHz (30.025 MHz-87.975 MHz full-band frequency hopping is tested by acceptance test), and the error is less than or equal to +/-100 kHz.
Furthermore, the interface of the main control module comprises a round quick connector adapter which is connected with an interface unit (INTF) and converges an XPA7 interface and an XPAD14 interface into an interface which enters the main board module; and an SMB socket is adopted for an audio input interface input from the front panel module; and an SMB socket is adopted, and an audio output interface is output from the front panel module; and a JTAG-MCU programming interface for programming the auxiliary control MCU; and a master control radio frequency interface which adopts RS485 serial signals as power supply and control signals; the master control intermediate frequency interface comprises an SPI (serial peripheral interface) and an ISA (industry standard architecture) bus connected with the ARM module, and RCLK, RDATA (serial peripheral interface), TCLK and TDATA (time dependent data attachment) signals connected with the BERT unit; the KB interface is connected with the keyboard unit by adopting a PTK4 socket and a USB signal; and connecting the display module by using a flexible flat wire, and contacting the socket display interface by using 0.5-40 bottoms of FPC; and adopt RJ45 socket, connect to the LAN interface of MC interface on the circuit board; and a mini USB socket is adopted, and the circuit board is connected to a USB _ OTG interface of the MC interface; and a USB1 interface of the first path of USB interface output by the USB HUB; and a USB2 interface of a second path of USB interface output by the USB HUB; the RS232 interface is used for connecting the circuit board to the RS485 bus and then converting the circuit board into RS232 for communication between the host and the outside; and a phi 2.1 socket is adopted, wherein a pin 1 is a +12 pin, and a pin 2 is a GND power interface; a PTK4-2.54 socket is adopted to connect a power switch interface between the power interface and the main control module; and JTAG-DSP interface for programming DSP; the audio signal generation technical indexes of the main control module are as follows: 1) audio generation frequency: 50 Hz-10 kHz single tone or double tone with error less than or equal to +/-1 Hz; 2) audio generation level: 1 mV-1V, error less than or equal to +/-5 percent, and nominal value +/-1 mV; 3) An audio output interface: audio I, audio II and audio output BNC; 4) audio output impedance: 0 Ω; the audio signal analysis technical indexes of the main control module are as follows: 5) audio analysis frequency: 50 Hz-10 kHz, and the error is less than or equal to +/-1 Hz; 6) audio voltage measurement: 10 mV-6V (audio I and audio II interface input), 1V-200V (audio in BNC interface input), and +/-5% of nominal value +/-1 mV; 7) audio signal-to-noise measurement: the range is 0dB to 40dB, the accuracy of 3dB to 20dB is +/-0.5 dB, the accuracy of 20dB to 40dB is +/-1 dB, 1kHz audio signals are not checked below 3 dB; 8) audio distortion measurement: the reading range is 0-100%, the error is less than or equal to +/-5% (when the distortion degree is 1-30%); 9) input impedance: the interface of the audio I and the interface of the audio II are 600 omega, and the interface of the audio in BNC is more than 1M omega; 10) audio signal detection: setting a threshold (typically 100mV) between 10mV and 1V, wherein AF _ detect is TTL high level when an AFm input signal exceeds a threshold voltage (AF _ detect interface: an AA unit is connected to a main control unit); the baseband error rate test technical indexes of the main control module are as follows: 11) base band error rate range: 5 x 10-2 to 1 x 10-6; 12) baseband digital rate: 16 kbit/s; 13) baseband interface level: transmit 2Vpp, receive 1Vpp at 2k Ω impedance, transmit level: error < 10%, reception level: nominal ± 20%, not as a test indicator.
Further, the front panel module comprises an audio/data interface connected with the front panel audio/data interface; the XPA7 interface and the XPAD14 interface are converged into a round quick connector adapter interface, and the interface is connected with the mainboard module; and a keyboard interface which adopts a PTK4-2.54(Z) interface and is used for connecting with the main control unit; and a FPC0.5-40 bottom contact socket is adopted, and a flexible flat cable is adopted to be connected to a display interface of the display module; and a switch interface which is connected with a power supply unit and can control the switch of the host by adopting a PTK4-2.54(Z) interface; the technical indexes of the front panel module are as follows: 1) displaying a dot matrix: 800 × 480; 2) display size: 7 inch wide screen, module size 165mm x 104mm, view screen size 152.4mm x 91.44 mm; 3) a display mode: TFT direct display/LED backlight; 4) power supply and power consumption: +5V, 150 mA; the maximum LED backlight current is 300mA (adjustable).
Further, the main control unit comprises a main controller and an auxiliary controller; the main controller is composed of an ARM and is used for finishing control, state display, parameter setting, test result calculation and display of each unit module in the host; the ARM system comprises an interface layer which provides all interface elements, creates a corresponding thread according to user operation and calls an interface function provided by a test application layer in the thread; the right side of a display interface of the interface layer is provided with a control key used for switching a test function area, and the middle of the upper part of the function area displays a current test function title; the middle part is the content of the test interface page, which can be a numerical value input item and a test result item, the interface layer selects the keys (6) on the right side of the screen, and the current interface object is highlighted; after the numerical value input item is selected, inputting a numerical value by adopting a numerical key, forbidding illegal input, and pressing a confirmation key to exceed a numerical value range (display range boundary value); the test result item can not be selected, and only the test result is displayed; the interface of the interface layer in the interference parameter setting function area integrates the output function of various interference modes, completes the output function of the interference synthesized signal of the finger control equipment, and the setting is divided into: narrow-band interference, broadband interference, frequency sweep interference, collision interference, jamming interference, aiming interference, tracking interference, comb interference and training interference; the interference parameter setting is used for carrying out different parameter settings on different interference modes respectively; and test application layer for completing measurement algorithm and automatic control task; providing various controls of the ARM peripheral equipment, and providing an operating system layer and a driving layer of a standard operating interface for a test application layer; the system comprises a network card driver, a keyboard driver, a display screen driver, a GPIO driver, a UART driver, an SPI driver and an ISA driver; the system of the auxiliary controller is used for controlling the low-frequency channel unit and the baseband error code test IC; the auxiliary controller receives the control command and the query command of the main controller and replies a response; the auxiliary controller adopts ATMEL company enhanced built-in Flash's reduced instruction set CPU high-speed 8-bit singlechip ATmega 128; the development environment is ICC AVR compiling environment and ATMELAVR Studio Integrated Development Environment (IDE); the ARM microprocessor uses an embedded Windows CE 6.0(WinCE) operating system, and a UI and a test application system are established on the operating system; the operation of each processor is asynchronous, and the main control ARM controls other processors by adopting a serial communication protocol; namely, the main controller is respectively communicated with the auxiliary controller, the MCU of the radio frequency module and the MCU of the interference module through an RS485 bus; the main controller is also in communication connection with a DSP processor for audio signal generation and audio signal analysis, and a DSP control module consisting of an audio analysis algorithm and a driver is arranged in the main controller; the DSP processor comprises a control of the audio generating unit and generates audio signals with specified frequency and amplitude; analyzing the frequency, level and SINAD of an audio input signal in an audio analysis unit; the DSP processor receives a control command and an inquiry command of the main controller and replies a response; the received control command and the query command comprise commands sent to the audio unit, and when the corresponding commands are executed, the stored audio analysis results are replied to the main controller; the DSP processor adopts TI company floating point DSPTMS320F 28335; the DSP adopts LQFP package with the processing speed of 150MIPS and is internally provided with a 256K independent flash; a radio frequency control module which is controlled and driven by a radio frequency MCU is arranged in the radio frequency control module; the radio frequency control module controls the frequency and the level of a radio frequency signal; the control function of the first local oscillator, the second local oscillator and the radio frequency output gain is realized; the MCU of the radio frequency module receives a control command and an inquiry command of the main controller and replies a response; the received control command and the query command comprise commands sent to a radio frequency generation control unit, and the commands adopt ATMEL company enhanced built-in Flash reduced instruction set CPU high-speed 8-bit singlechip ATmega 128; the main controller is in communication connection with an FPGA; the FPGA module which is realized by digital logic and comprises each test unit inside the intermediate frequency module is arranged in the FPGA; the FPGA module finishes waveform acquisition control, analog modulation signal generation (FM/AM/fixed frequency), analog modulation signal demodulation and measurement (FM/AM), a digital frequency meter, sender frequency hopping measurement (frequency hopping rate and frequency hopping bandwidth), an intermediate frequency oscilloscope and an intermediate frequency baseband error code test; the FPGA adopts EP3SL50F780C4N of Altera company; the MCU of the interference module completes the signal generation of tracking interference, blocking interference and aiming interference; CPLD chip EPM3064ATI44-10 from Altera corporation is adopted; the MCU adopts an ATMEL company enhanced built-in Flash reduced instruction set CPU high-speed 8-bit singlechip ATmega 128.
Furthermore, the engine body is made of aluminum alloy materials, so that the engine body is light in weight, firm in shell and has antirust performance; the front panel of the machine body sequentially comprises from top to bottom from left to right: the tester comprises a tester name area, a liquid crystal display area and a keyboard input area; the display screen of the liquid crystal display area adopts a 7-inch 800 gamma 480 color TFT-LCD wide-temperature display module; the keyboard of the keyboard input area adopts silicon rubber keys, the keyboard input area comprises a function area, a number area, a control area and an interface area, and the function area comprises a plurality of function selection keys; the number area comprises 10 number keys, a decimal point/negative sign key and a backspace key; the control area comprises three unit keys, four direction keys, a confirmation key and three function keys; the interface area comprises a power supply key for a switch key of the tester and a volume adjusting key for adjusting the volume of the built-in loudspeaker; a USB mini interface used for connecting the computer and the tester; the USB interface is used for connecting USB slave equipment, such as a mouse, a keyboard and the like; a network port for external network communication; an interference input interface for an input port for an external interference signal; a 14-core audio interface is used for connecting an audio port of a radio station; a duplex port of the radio station antenna port is connected through a radio frequency cable; the rear panel of the machine body comprises a power connector of a YGD20B0802J type socket; handles are arranged on the top and the right side of the machine body, so that the machine body is convenient to carry and carry; the top handle aims at facilitating the moving on the operation table and is also beneficial to being taken out from the storage drawer; the handle on right side is used for handle to carry the detector, organism bottom design has 4 supporting legss of plastics material, and 2 preceding supporting legss can be opened downwards or pack up, have anti-skidding rubber on, open two supporting legss that are close to the front panel and can place the instrument with the operation on the plane at small elevation.
Compared with the prior art, the communication anti-interference performance tester for the finger control equipment has two working modes of conventional testing and anti-interference testing, menu operation and interactive prompt function in the testing process; the method can provide the test of the performance index of the conventional communication equipment in the interference-free signal environment and provide the test of the performance index of the communication equipment in the interference environment (including internal interference and external interference); the interference signal environment simulation and the performance index testing function under the interference environment are added on the basis of the traditional measuring instrument and the wireless comprehensive tester, the universality, comprehensiveness and convenience of the tester are enhanced, and the requirements of function inspection and performance index testing of various fixed-frequency and frequency-hopping radio stations under the complex electromagnetic environment can be measured under the indoor condition; compared with the traditional measuring instrument and the wireless comprehensive tester, the tester has the following characteristics:
a) the universality is strong: on the basis of the wireless comprehensive tester, the test of multiple indexes such as frequency hopping parameters, error codes and the like and the analog output function of interference signals are added; at present, domestic wireless comprehensive testers lack testing and frequency hopping testing functions in an interference environment, and frequency hopping radio station testers developed by existing units are large in size and high in cost and can only adapt to specific equipment, so that batch equipment cannot be formed. The tester has strong universality and excellent performance, and makes a breakthrough in the field.
b) Comprehensive integration: the functions of various desk type instruments are integrated comprehensively, and the functions and performance indexes are superior.
c) The intelligence is convenient: humanized colored graphical interface cooperates outstanding ergonomic keyboard, and the cable is connected simply, provides two kinds of working methods of conventional test and anti-interference test, makes things convenient for two kinds of demands of technical staff test maintenance and ordinary soldier's short-term test.
d) Safe and reliable: after the test items are selected, the test process is full-automatic, the receiving and sending states of the radio stations are controlled by the tester, and equipment damage caused by manual misoperation is avoided.
Drawings
Fig. 1 is a block diagram of the hardware module of the host according to the present invention.
Fig. 2 is a block diagram of the functional units of the host of the present invention.
Fig. 3 is a block diagram of the functional units of the host of the present invention.
Fig. 4 is a schematic view of the front structure of the body of the present invention.
Fig. 5 is a schematic view of the back structure of the body of the present invention.
Fig. 6 is a schematic diagram of the front keyboard area structure of the machine body of the present invention.
Fig. 7 is a schematic structural view of the front interface area of the body of the present invention.
Fig. 8 is a schematic view of the top surface structure of the machine body of the present invention.
Fig. 9 is a schematic diagram of a test function list according to the present invention.
Fig. 10 is a schematic view of the connection relationship between the testers in embodiment 2 of the present invention.
Fig. 11 is a schematic view of a narrow-band interference setting interface according to embodiment 2 of the present invention.
Fig. 12 is a schematic view of a broadband interference setting interface according to embodiment 2 of the present invention.
FIG. 13 is a schematic diagram of an interface for setting frequency-sweep interference according to embodiment 2 of the present invention
Fig. 14 is a schematic view of a collision disturbance setting interface according to embodiment 2 of the present invention.
Fig. 15 is a schematic view of a blocking interference setting interface according to embodiment 2 of the present invention.
Fig. 16 is a schematic view of an aiming interference setting interface according to embodiment 2 of the present invention.
Fig. 17 is a schematic view of an interference setting interface of the comb-shaped interference device according to embodiment 2 of the present invention.
Fig. 18 is a schematic view of the connection relationship in embodiment 3 of the present invention.
Fig. 19 is a schematic diagram of a training interference interface according to embodiment 3 of the present invention.
Fig. 20 is a schematic diagram of an interference immunity test-frequency hopping test interface according to embodiment 3 of the present invention.
Fig. 21 is a schematic diagram of an interference immunity test-error code test interface in embodiment 3 of the present invention.
Fig. 22 is a schematic diagram of an interference immunity test-error code test interface according to embodiment 3 of the present invention.
Fig. 23 is a schematic diagram of the system setup interface of the present invention.
Fig. 24 is a schematic diagram of the testing of the transmitter of the present invention.
Fig. 25 is a schematic diagram of the test of the analog receiver of the present invention.
Fig. 26 is a schematic diagram of the digital receiver test of the present invention.
Fig. 27 is a flow chart of the analog sensitivity test of the present invention.
Fig. 28 is a flow chart of the digital sensitivity test of the present invention.
Fig. 29 is a schematic diagram of the maximum energy search of the present invention.
Fig. 30 is a schematic diagram of the audio analysis module of the present invention.
Fig. 31 is a schematic diagram of the waveform collection principle of the present invention.
Fig. 32 is a schematic diagram of the waveform playback control unit of the present invention.
Fig. 33 is a schematic diagram of the real-time signal waveform of the equal-precision frequency measurement signal of the present invention.
Detailed Description
Example 1:
as shown in fig. 1 and fig. 2, the anti-interference performance tester for communication of the finger control equipment of the present invention includes a host for testing a radio station; the power adapter supplies power to the host and converts an alternating current 220V power supply into a 12V direct current power supply; and a radio frequency test cable for connecting the host and the radio station antenna port; the audio connecting cable is used for connecting the host and the radio station audio port; and an interference input connecting cable for connecting the host computer with external interference input; the host comprises a machine body and a control panel arranged on the inner side of the machine body, wherein the control panel comprises a main control module; the front panel module is communicated with the main control module, the interference module is communicated through an RS485 interface and used for outputting various interference signals, the intermediate frequency module is communicated through a main control intermediate frequency interface, and the radio frequency module is communicated with the main control intermediate frequency interface through the RS485 interface; the radio frequency module is in communication connection with an attenuator module which comprises an attenuator unit and provides 20dB/50W attenuation, and a calibration signal input interface and a calibration signal output interface are arranged on the radio frequency module; the attenuator module is provided with a duplex port; the main control module is also provided with a power supply interface, a LAN interface, a USB interface, an RS232 interface, an audio input interface and an audio output interface.
The main control module comprises a main control unit for completing data transmission, calculation, man-machine interaction and system control; the low-frequency channel unit is communicated with the main control unit, selects an audio source which is determined to enter the AA unit, selects a signal source which enters the oscilloscope, is used for switching and controlling an audio/baseband communication mode and is communicated with the audio input interface and the audio output interface; and the audio frequency generating unit is communicated with the low-frequency channel unit and is used for generating audio signals, generating single-tone or double-tone audio signals with controllable frequency and level and providing input for a radio station audio port; the audio analysis unit is communicated with the low-frequency channel unit and the main control unit and is used for testing audio frequency, level and SINAD; when an ultrashort wave radio station receiver is tested, audio voltage, signal-to-noise ratio and the like need to be analyzed on an audio signal; the audio output frequency range of the universal ultrashort wave radio station is 300 Hz-3400 Hz, and the output level range is 100 mV-10V; the measurement of indexes such as audio voltage, signal-to-noise ratio, Signal-to-noise ratio and the like of the audio signal is realized by adopting an A/D sampling and DSP technology and utilizing an algorithm; carrying out algorithm research and simulation aiming at the measurement of the signal-to-noise ratio and the signal-to-noise ratio; the signal-to-noise ratio measurement algorithm based on the DFT mode has better performance; the signal frequency and amplitude estimation precision can meet the measurement requirement; the method comprises the following specific steps: truncating the input signal, multiplying a row vector X-X (n) obtained by truncating the input signal by a sine signal column vector W-W (n) with the same length, and approximating components of the sine signal W contained in the input signal; the longer the sequence length participating in the calculation is, the more accurate the component calculation is; if the frequency of the vector W is equal to the respective frequency components of the distortion measure and their quadrature components, the energy in the input signal containing the respective harmonics can be calculated; let the fundamental frequency of the signal to be measured be fd, the sampling rate be fs, and the W vector represented by the mth harmonic be:
therefore, it is easy to calculate the energy Em of the mth harmonic and the distortion D0 of the signal:
Em＝|X×Wm|2…………………………………(2)
the calculation of the distortion degree of the above formula is carried out on the premise that the fundamental frequency fd of the measured signal is accurately known; in engineering measurement, the frequency of a measured signal cannot be absolutely accurate or a certain frequency deviation is allowed; if the frequency deviation between the measured system and the frequency of the measuring system is large, a large measuring error is caused; for this reason, measurement based on only one frequency point is not sufficient; in order to ensure certain practicability, the formula is improved: when the energy of a certain harmonic component is calculated, a sequence with fixed frequency is not used for calculation, but the maximum energy in all sequences in a certain range near the frequency point represents the actual signal intensity of the frequency point; searching a maximum value by adopting a dichotomy to find a maximum energy point; as shown in fig. 29, the dashed line in the graph represents the energy distribution of the mth harmonic, fm represents the frequency point where the mth harmonic is actually located, and fstart and fend represent the frequency starting point and the frequency ending point of the mth harmonic maximum search, respectively; when calculating the subharmonic energy, firstly calculating fstart and fend and the signal energy E0, E2 and E1 of the middle frequency point fmidle, then comparing the energy of the three frequency points, and if E0 is greater than E2, searching between fstart and fmidle until a maximum condition is met; when searching for the maximum value of the fundamental frequency energy, the finally obtained frequency point is the fundamental frequency of the detected signal; if the most stringent condition is strict enough, the obtained fundamental frequency is also accurate enough; at the moment, the fundamental frequency can be directly used to obtain the accurate frequency of each higher harmonic for estimating the energy of each higher harmonic; through the calculation, not only can the distortion measurement of the signal be completed, but also the measurement of the frequency and the level of the signal can be realized; and the calculation of the signal-to-noise ratio and the signal-to-noise ratio is completed on the basis; the performance of the algorithm is verified through Matlab simulation, and through random testing, the distortion measurement error of the algorithm can be controlled to be below 1 percent, and the frequency error is below 1Hz, so that the audio test requirement is met; for a DSP with the speed of 100MIPS, the time for completing the primary distortion estimation is about 2.2 ms; in order to complete the measurement (after voltage division and reduction) of the audio signal with the frequency range of 50Hz to 20kHz and the input level range of 5mV to 5V, and the signal-to-noise ratio analysis with the frequency range of 300Hz to 3400Hz and the input level range of 5mV to 5V, 3 levels of gain control are required to be added, each level is 20dB, when the signal-to-noise ratio and the signal-to-noise ratio are tested, as shown in figure 30, in order to fully utilize the precision of the AD converter, the automatic level control is required to be carried out on the input audio signal, so that the maximum level of the signal reaches the undistorted amplitude range of 80; the DSP selects a floating-point DSP TMS320VC33 with high cost performance, the data bus width is 32 bits, the operation precision is high, and the audio measurement algorithm can be conveniently realized; the A/D converter adopts a 16-bit high-speed ADC, the highest sampling rate of the ADC is 85kS/s, and the requirements of the precision and the bandwidth of audio analysis are met; the baseband error code testing unit is communicated with the low-frequency channel unit and the main control unit and is used for comparing and testing error codes; the power supply module is electrically connected with an output power interface of the power adapter and is used for power supply voltage stabilization and startup key detection; the front panel module comprises a keyboard unit which is electrically connected with the main control unit, consists of a keyboard circuit and rubber keys and is used for completing the scanning and reading of a keyboard matrix; the display unit is electrically connected with the main control unit, consists of an LCD display screen and a display signal switching circuit board and completes parameter input and display; the interface unit is electrically connected with the main control module and comprises interfaces except the N-type duplex port on the front panel, a power switch and a circular fast connector switching circuit board; the radio frequency module comprises a waveform acquisition channel unit which is used for completing impedance matching and port protection of an input interface, completing power control, frequency conversion and filtering of an input signal and providing input for A/D sampling: and a waveform playback channel unit for filtering, frequency conversion and power control of D/A output signals, moving playback waveforms to radio frequency, and completing impedance matching of an output interface, port protection and final-stage signal driving; the input interface is communicated with the waveform playback channel unit and is used for synthesizing the interference signal and the modulation signal and realizing the waveform synthesis unit for synthesizing and outputting the interference signal; the interference unit is communicated with an input interface of the waveform synthesis unit and used for realizing the output of interference signals after receiving the parameter setting of the main control module; and an external interference interface which communicates with an input interface of the waveform synthesis unit and receives an external interference signal; and a selection switch in output communication with the waveform synthesis unit; the other input end of the selector switch is in communication connection with the attenuator module; the output end of the selection switch is connected with the input end of the waveform acquisition channel unit; the radio frequency local oscillator unit is communicated with the waveform playback channel unit and is used for frequency conversion of two local oscillators required by frequency conversion; the radio frequency control circuit unit is communicated with the main control unit and the waveform playback channel unit and is used for being in communication connection with an external controller, namely receiving commands from the main control module and controlling the radio frequency module; and a radio frequency power supply circuit unit for supplying power to each circuit of the radio frequency module; the radio frequency signal generating module is communicated with the radio frequency control circuit unit and is used for testing the sensitivity of the ultra-short wave radio station; the intermediate frequency module comprises a waveform acquisition control unit which is connected with an A/D sampling output end of the waveform acquisition channel unit, a D/A output signal input end of the waveform playback channel unit and used for IF analog signal analog-to-digital conversion, data splicing, high-speed buffering and acquisition control; the waveform acquisition control unit is used for high-speed sampling and storage of communication waveforms, and is used for directly sampling and digitizing the communication waveforms of the tactical radio station, the required sampling rate covers the frequency range of 1.5 MHz-88 MHz of the tactical radio station, and the maximum sampling rate is larger than 176MHz according to the Nyquist sampling law; based on the requirement, an ADC (analog to digital converter) (AD 9211BCPZ-300 is selected, the chip supports the sampling rate of 300MSPS at most and 10-bit) with the highest sampling rate of 250MSPS, high-speed sampling inevitably brings high-speed and massive storage, as shown in figure 31, a DDR2 SDRAM device is adopted as a storage array unit, the SDRAM is generally used in the application which needs a large amount of nonvolatile memories and is sensitive to cost, but row refreshing, row opening management, time delay and other operations are required, an acquisition controller is realized by adopting FPGA logic, the highest storage rate can be reached, and the real-time complete acquisition of intermediate-frequency signals can be achieved; the principle of the waveform acquisition unit is as follows: after starting waveform acquisition, an intermediate frequency input signal (IF _ in) is converted into a 10-bit digital signal by an A/D converter, 25 10-bit sampling points are combined into a group by 250 bits, in addition, a 6-bit invalid bit is supplemented, and data with 256 bit width is spliced, namely the data is the data with 256 bit width
10(bit)×25(sample)+6(bit)＝256(bit) (1)
The 256-bit spliced data enters a high-speed buffer named 'ADFIFO', the acquisition controller monitors the state of the ADFIFO, and when the data in the buffer reaches a specified threshold, the shared DDR2 SDRAM memory is taken over, and the data in the buffer is written into the DDR2 SDRAM. The data bit width of the acquisition controller is 256 bits, the address width is 26 bits, and the address corresponding to the 2GB memory space is
Namely, the 26-bit address range is (0x 0000000-0 x3FFFFFF), each bit address can store 25 sampling points, then the conversion is carried out according to the sampling rate of 250MSPS, and the longest acquisition time is
13.4217728 seconds can be acquired at the longest if the down-sampling rate is 125 MSPS; the starting, the acquisition depth and the sampling rate of the waveform acquisition can be controlled by the main control unit through the bus bridging unit to read and write the relevant registers of the waveform acquisition unit; the waveform playback channel unit is controlled by a waveform playback control unit, as shown in fig. 32, the waveform playback control unit includes a combiner that combines buffered waveform data and superimposed interference signal data into one path to form data with uniform time intervals, a DAC that receives the output data of the combiner and converts the data into analog current (or voltage) amplitude discrete signal representation form, and a signal conditioning module that converts the DAC into a continuous analog signal by using approximately rectangular pulses as an interpolation function, and an ADC module composed of an AD9743 chip and filters harmonic noise of the output signal through an analog signal filter; the digital frequency meter unit is communicated with the main control unit and used for digital frequency measurement, the frequency measurement is carried out through a frequency meter shaping signal and a standard clock signal which are provided by the radio frequency module, and an equal-precision frequency measurement algorithm is adopted; the equal precision frequency measurement comprises two counters, one of which counts a standard frequency clock and the other counts a measured frequency clock, wherein an enable input end of the counter is an enable input and is used for controlling whether the counter works (works at a high level); before the measurement is started, firstly, an external controller sends out a frequency measurement enable signal (enable is high level), an internal gating signal ena is set to be high level only when the rising edge of a pulse to be measured, and meanwhile, two counters start to count; after the enable lasts for a period of time, the external controller is set to be in a low level, the ena signal still keeps 0 when the rising edge of the next pulse to be detected arrives, and the counter stops working at the moment; at this time, the working time of the counter is always equal to the complete cycle of the measured signal, which is equal precision frequency measurement, as shown in fig. 33, in one measurement, the count value of the measured signal is Nt, the count value of the reference clock is Nr, and the frequency of the reference clock is Fr, so that the frequency of the measured signal is Ft ═ Fr × Nt ÷ Nr; a timer is arranged in the module, the frequency is measured every 2 seconds, two counting values are updated once, the figure shows the signal tap II real-time signal waveform obtained by equal-precision frequency measurement, the fourth row test _ cnt output end outputs the counting value of the measured signal, and the fifth row ref _ cnt output end outputs the counting value of the reference clock.
The main control unit reads the two counting values and converts the two counting values to obtain the frequency of the measured signal; the analog demodulation unit is communicated with the main control unit and is used for FM and AM demodulation and modulation parameter measurement, and comprises modulation frequency deviation and modulation amplitude, and the analog demodulation is realized by adopting an I/Q orthogonal demodulation mode; the sender frequency hopping measuring unit is communicated with the main control unit and is used for measuring sender frequency hopping parameters, wherein the sender frequency hopping measuring unit comprises frequency hopping rate and frequency hopping bandwidth; the transmitter frequency hopping measuring unit completes analysis and extraction of frequency hopping rate, frequency hopping bandwidth and frequency hopping frequency set in the radio frequency signal by adopting power detection, synchronous extraction and high-speed frequency measurement; the method comprises the steps that a tested platform is placed in a frequency hopping emission state, a frequency conversion power blocking signal is extracted through power detection, a high-speed frequency measurement circuit is triggered, and real-time frequency measurement and storage are conducted; sending to a frequency meter to directly measure the frequency hopping rate; counting the highest value and the lowest value of the frequency within a period of time to obtain a frequency hopping bandwidth; the frequency hopping frequency set requires long-time statistical analysis; the power detection adopts an internal Schottky diode RF detector with temperature compensation, the input power range is-34 dBm to 14dBm, the input frequency range is 100kHz to 1000MHz, and the envelope of a radio station frequency hopping signal is taken out through power detection to be used for realizing the test of frequency hopping frequency in an FPGA; the test of the frequency hopping rate and the frequency hopping bandwidth is finished through the FPGA, the frequency of the detected waveform is measured, and the test result of the frequency hopping rate can be obtained; shaping and amplifying the detection waveform, and then using the amplified detection waveform for a synchronous signal of frequency hopping frequency to carry out high-speed frequency measurement, so that all frequency hopping frequencies in a period of time can be obtained, and the frequency hopping bandwidth is obtained through statistical analysis; the intermediate frequency baseband error code testing unit is communicated with the main control unit and is used for realizing baseband error code testing together with the baseband error code testing unit on the mainboard module and finishing synchronous extraction and GMSK modulation; and the D/A output signal input end of the waveform playback channel unit is provided with an analog modulation generation unit for generating FM signals, AM signals and fixed frequency signals, and the analog modulation generation unit is realized by NCO in FPGA.
The interface of the attenuator module comprises an N-type interface of an N-type radio frequency socket; the radio frequency cable is arranged outside a front panel of a host and is connected with a radio station antenna port through a radio frequency cable; and the SMA interface of the SMA type radio frequency socket is connected with the RF interface of the radio frequency module in the host through a semi-rigid shielding cable. The attenuator module has a frequency range: 1.5 MHz-100 MHz; n-end level range: -120 dBm- +47 dBm; SMA end level range: -100dBm to +27 dBm. The interface of the radio frequency module comprises a master control radio frequency interface which adopts an RS485 serial signal as a power supply and a control signal; and adopt SMA socket, through the duplex mouth of half steel shield cable and the SMA interface connection of attenuator module: and adopt SMA socket, through half the calibration input interface that the SMA socket of the armoured cable and RFi on the back panel of the host computer connects; and adopt SMA socket, pass semi-steel shielded cable and SMA socket connection of RFo on the host computer back panel calibrate the output interface; and an IF output interface for inputting an IF signal from the digital intermediate frequency module; and an IF input interface for outputting an IF signal to the digital intermediate frequency module; outputting the standard clock to a standard clock source interface of the digital intermediate frequency module to provide a standard clock interface for the standard clock source interface; and a frequency meter interface for shaping the intermediate frequency signal into square wave pulse output; and a JTAG-RF interface for programming the radio frequency control MCU; the technical indexes of the radio frequency module are as follows:
1) radio frequency generation frequency: 1.5MHz to 100MHz, with error less than or equal to +/-2 multiplied by 10 < -7 > (0.2 ppm); 2) radio frequency output level: a duplex port is-120 dBm to-50 dBm, a calibration port is-60 dBm to 0dBm, and the error is less than or equal to +/-1.5 dB (temperature compensation at 23 +/-10 ℃ and +/-0.01 dB/DEG C); 3) single sideband phase noise: less than or equal to-90 dBc/Hz (100MHz is deviated by 20 kHz); 4) radio frequency measurement: 1.5MHz to 100MHz, the error is less than or equal to +/-2 multiplied by 10 < -7 > and the nominal value is +/-4 Hz; 5) radio frequency power measurement: duplex input is 0.05W-50W (17 dBm-47 dBm), and the error is less than or equal to +/-0.8 dB (the radio frequency voltage measurement accuracy is +/-10%); 6) maximum error of gain linearity: plus or minus 1 dB; 7) maximum error of frequency response: ± 1dB (in wideband mode); 8) radio frequency input/output impedance: 50 omega; 9) supply voltage: 6V +/-5%, wherein the interface of the interference module comprises an SMA socket which is used for outputting an interference signal to an interference signal output interface of a radio frequency module unit; a PTK4 socket, a 5V power supply interface for providing a 5V/2A working power supply and a JTAG-MCU interface for programming and downloading a singlechip of the interference module are adopted; and the RS485 communication control interface is used for setting the parameters of the interference module and controlling the signal output by the main control unit, and the technical indexes are as follows: 1) frequency range: 1.5 MHz-100 MHz; 2) frequency resolution: 1 Hz; 3) internal time base: 1X 10-6; 4) interference output level range (peak power): -100dBm to 0 dBm; 5) interference source output level error: 1.5 dB. The interface of the intermediate frequency module comprises an SPI (serial peripheral interface) and an ISA (industry standard architecture) bus connected with the main control unit, and a main control intermediate frequency interface of RCLK (remote control link), RDATA (remote data attachment), TCLK (transmission control link) and TDATA (time data attachment) signals connected with the BERT unit; and adopt SMA socket, IF input interface used for IF signal from module input of the radio frequency; and an IF output interface which adopts an SMA socket and is used for outputting the IF signal to the radio frequency module; and adopt 2 SSMB sockets, input the standard clock source interface to the intermediate frequency module from the radio frequency module, provide the standard clock interface of the standard clock (produced by temperature compensated crystal oscillator on the radio frequency module) for it; and adopt SMA socket, by the frequency meter interface of the intermediate frequency shaping pulse of the radio frequency module input: and an SMA socket is adopted, and the oscilloscope signals enter an oscilloscope interface of the IFOSC unit from the SMA socket; a PTK4 socket is adopted to provide a 5V power supply interface of a 5V/2A working power supply; and a JTAG-FPGA interface for programming and downloading the FPGA; the technical indexes of the intermediate frequency module are as follows: 1) IF input frequency range: 1.5 MHz-100 MHz; 2) IF output frequency range: 1.5 MHz-100 MHz; 3) IF input level range: 0dBm to 6 dBm; 4) IF output level range: -7dBm to-1 dBm; 5) a/D converter sampling rate: a maximum of 250MSPS (10-bit); 6) d/a converter sampling rate: a maximum of 250MSPS (10-bit); 7) memory capacity: greater than 2 GB; 8) supply voltage: +5V + -5%; 9) control signals: LVTTL 3.3V level; the modulation signal of the intermediate frequency module is generated and measured as follows: 10) the FM signal is generated: the modulation frequency range is 150 Hz-10 kHz, the frequency deviation range is 500 Hz-30 kHz, and the frequency deviation error is less than or equal to +/-5 percent of the nominal value +/-200 Hz; 11) AM signal generation: the modulation frequency range is 150 Hz-10 kHz, the amplitude modulation range is 0-99%, and the amplitude modulation error is less than or equal to +/-5% of the nominal value +/-1%; 12) FM measurement: the frequency deviation range is 500 Hz-30 kHz, and the error is less than or equal to +/-5 percent of the nominal value +/-200 Hz; 13) AM measurement: the amplitude adjusting range is 0-100% (modulation frequency is 1kHz), and the error is less than or equal to +/-5%, and the nominal value is +/-1%; 14) IF input/output impedance: 50 omega; the frequency hopping test indexes of the transmitter of the intermediate frequency module are as follows: 15) measuring the frequency hopping rate: the range is 0-5000 hop/s (the acceptance test is 203hop/s), and the error is less than or equal to 2 percent of the nominal value +/-1 hop/s; 16) measuring the frequency hopping bandwidth: more than 57MHz (30.025 MHz-87.975 MHz full-band frequency hopping is tested by acceptance test), and the error is less than or equal to +/-100 kHz. The interface of the main control module comprises a round quick connector switching interface which is connected with an interface unit (INTF) and converges an XPA7 interface and an XPAD14 interface into an interface to enter a mainboard module; and an SMB socket is adopted for an audio input interface input from the front panel module; and an SMB socket is adopted, and an audio output interface is output from the front panel module; and a JTAG-MCU programming interface for programming the auxiliary control MCU; and a master control radio frequency interface which adopts RS485 serial signals as power supply and control signals; the master control intermediate frequency interface comprises an SPI (serial peripheral interface) and an ISA (industry standard architecture) bus connected with the ARM module, and RCLK, RDATA (serial peripheral interface), TCLK and TDATA (time dependent data attachment) signals connected with the BERT unit; the KB interface is connected with the keyboard unit by adopting a PTK4 socket and a USB signal; and connecting the display module by using a flexible flat wire, and contacting the socket display interface by using 0.5-40 bottoms of FPC; and adopt RJ45 socket, connect to the LAN interface of MC interface on the circuit board; and a mini USB socket is adopted, and the circuit board is connected to a USB _ OTG interface of the MC interface; and a USB1 interface of the first path of USB interface output by the USB HUB; and a USB2 interface of a second path of USB interface output by the USB HUB; the RS232 interface is used for connecting the circuit board to the RS485 bus and then converting the circuit board into RS232 for communication between the host and the outside; and a phi 2.1 socket is adopted, wherein a pin 1 is a +12 pin, and a pin 2 is a GND power interface; a PTK4-2.54 socket is adopted to connect a power switch interface between the power interface and the main control module; and JTAG-DSP interface for programming DSP; the audio signal generation technical indexes of the main control module are as follows: 1) audio generation frequency: 50 Hz-10 kHz single tone or double tone with error less than or equal to +/-1 Hz; 2) audio generation level: 1 mV-1V, error less than or equal to +/-5 percent, and nominal value +/-1 mV; 3) an audio output interface: audio I, audio II and audio output BNC; 4) audio output impedance: 0 Ω; the audio signal analysis technical indexes of the main control module are as follows: 5) audio analysis frequency: 50 Hz-10 kHz, and the error is less than or equal to +/-1 Hz; 6) audio voltage measurement: 10 mV-6V (audio I and audio II interface input), 1V-200V (audio in BNC interface input), and +/-5% of nominal value +/-1 mV; 7) audio signal-to-noise measurement: the range is 0dB to 40dB, the accuracy of 3dB to 20dB is +/-0.5 dB, the accuracy of 20dB to 40dB is +/-1 dB, 1kHz audio signals are not checked below 3 dB; 8) audio distortion measurement: the reading range is 0-100%, the error is less than or equal to +/-5% (when the distortion degree is 1-30%); 9) input impedance: the interface of the audio I and the interface of the audio II are 600 omega, and the interface of the audio in BNC is more than 1M omega; 10) audio signal detection: setting a threshold (typically 100mV) between 10mV and 1V, wherein AF _ detect is TTL high level when an AFm input signal exceeds a threshold voltage (AF _ detect interface: an AA unit is connected to a main control unit); the baseband error rate test technical indexes of the main control module are as follows: 11) base band error rate range: 5 x 10-2 to 1 x 10-6; 12) baseband digital rate: 16 kbit/s; 13) baseband interface level: transmit 2Vpp, receive 1Vpp at 2k Ω impedance, transmit level: error < 10%, reception level: nominal ± 20%, not as a test indicator. The front panel module comprises an audio/data interface connected with the front panel audio/data interface; the XPA7 interface and the XPAD14 interface are converged into a round quick connector adapter interface, and the interface is connected with the mainboard module; and a keyboard interface which adopts a PTK4-2.54(Z) interface and is used for connecting with the main control unit; and a FPC0.5-40 bottom contact socket is adopted, and a flexible flat cable is adopted to be connected to a display interface of the display module; and a switch interface which is connected with a power supply unit and can control the switch of the host by adopting a PTK4-2.54(Z) interface; the technical indexes of the front panel module are as follows: 1) displaying a dot matrix: 800 × 480; 2) display size: 7 inch wide screen, module size 165mm x 104mm, view screen size 152.4mm x 91.44 mm; 3) a display mode: TFT direct display/LED backlight; 4) power supply and power consumption: +5V, 150 mA; the maximum LED backlight current is 300mA (adjustable).
As shown in fig. 3, the main control unit includes a main controller and a sub controller; the main controller is composed of an ARM and is used for finishing control, state display, parameter setting, test result calculation and display of each unit module in the host; the ARM system comprises an interface layer which provides all interface elements, creates a corresponding thread according to user operation and calls an interface function provided by a test application layer in the thread; and test application layer for completing measurement algorithm and automatic control task; providing various controls of the ARM peripheral equipment, and providing an operating system layer and a driving layer of a standard operating interface for a test application layer; the system comprises a network card driver, a keyboard driver, a display screen driver, a GPIO driver, a UART driver, an SPI driver and an ISA driver; the system of the auxiliary controller is used for controlling the low-frequency channel unit and the baseband error code test IC; the auxiliary controller receives the control command and the query command of the main controller and replies a response; the auxiliary controller adopts ATMEL company enhanced built-in Flash's reduced instruction set CPU high-speed 8-bit singlechip ATmega 128; the development environment is ICC AVR compiling environment and ATMEL AVR Studio Integrated Development Environment (IDE); the ARM microprocessor uses an embedded Windows CE 6.0(WinCE) operating system, and a UI and a test application system are established on the operating system; the operation of each processor is asynchronous, and the main control ARM controls other processors by adopting a serial communication protocol; namely, the main controller is respectively communicated with the auxiliary controller, the MCU of the radio frequency module and the MCU of the interference module through an RS485 bus; the main controller is also in communication connection with a DSP processor for audio signal generation and audio signal analysis, and a DSP control module consisting of an audio analysis algorithm and a driver is arranged in the main controller; the DSP processor comprises a control of the audio generating unit and generates audio signals with specified frequency and amplitude; analyzing the frequency, level and SINAD of an audio input signal in an audio analysis unit; the DSP processor receives a control command and an inquiry command of the main controller and replies a response; the received control command and the query command comprise commands sent to the audio unit, and when the corresponding commands are executed, the stored audio analysis results are replied to the main controller; the DSP processor adopts a TI company floating point DSP TMS320F 28335; the DSP adopts LQFP package with the processing speed of 150MIPS and is internally provided with a 256K independent flash; a radio frequency control module which is controlled and driven by a radio frequency MCU is arranged in the radio frequency control module; the radio frequency control module controls the frequency and the level of a radio frequency signal; the control function of the first local oscillator, the second local oscillator and the radio frequency output gain is realized; the MCU of the radio frequency module receives a control command and an inquiry command of the main controller and replies a response; the received control command and the query command comprise commands sent to a radio frequency generation control unit, and the commands adopt ATMEL company enhanced built-in Flash reduced instruction set CPU high-speed 8-bit singlechip ATmega 128; the main controller is in communication connection with an FPGA; the FPGA module which is realized by digital logic and comprises each test unit inside the intermediate frequency module is arranged in the FPGA; the FPGA module finishes waveform acquisition control, analog modulation signal generation (FM/AM/fixed frequency), analog modulation signal demodulation and measurement (FM/AM), a digital frequency meter, sender frequency hopping measurement (frequency hopping rate and frequency hopping bandwidth), an intermediate frequency oscilloscope and an intermediate frequency baseband error code test; the FPGA adopts EP3SL50F780C4N of Altera company; the MCU of the interference module completes the signal generation of tracking interference, blocking interference and aiming interference; CPLD chip EPM3064ATI44-10 from Altera corporation is adopted; the MCU adopts an ATMEL company enhanced built-in Flash reduced instruction set CPU high-speed 8-bit singlechip ATmega 128.
As shown in fig. 4 to 8, the machine body is made of aluminum alloy material, so that the machine body is light in weight, firm in shell and has antirust performance; the front panel of the machine body sequentially comprises from top to bottom from left to right: the tester comprises a tester name area, a liquid crystal display area and a keyboard input area; the display screen of the liquid crystal display area adopts a 7-inch 800 gamma 480 color TFT-LCD wide-temperature display module; the keyboard of the keyboard input area adopts silicon rubber keys, the keyboard input area comprises a function area, a number area, a control area and an interface area, and the function area comprises a plurality of function selection keys; the number area comprises 10 number keys, a decimal point/negative sign key and a backspace key; the control area comprises three unit keys, four direction keys, a confirmation key and three function keys; the interface area comprises a power supply key for a switch key of the tester and a volume adjusting key for adjusting the volume of the built-in loudspeaker; a USB mini interface used for connecting the computer and the tester; the USB interface is used for connecting USB slave equipment, such as a mouse, a keyboard and the like; a network port for external network communication; an interference input interface for an input port for an external interference signal; a 14-core audio interface is used for connecting an audio port of a radio station; a duplex port of the radio station antenna port is connected through a radio frequency cable; the rear panel of the machine body comprises a power connector of a YGD20B0802J type socket; handles are arranged on the top and the right side of the machine body, so that the machine body is convenient to carry and carry; the top handle aims at facilitating the moving on the operation table and is also beneficial to being taken out from the storage drawer; the handle on right side is used for handle to carry the detector, organism bottom design has 4 supporting legss of plastics material, and 2 preceding supporting legss can be opened downwards or pack up, have anti-skidding rubber on, open two supporting legss that are close to the front panel and can place the instrument with the operation on the plane at small elevation.
The utility model discloses a communication anti-interference performance tester of finger control equipment, its anti-interference index test is mainly to carry out the weighted synthesis to the acquisition signal according to the interference-signal ratio that various signals required, and the signal after the synthesis is put back to the platform of being tested as the excitation source and is tested the excitation; the test function is shown in fig. 9.
Example 2:
the utility model is used for instruct the radio communication equipment among the accuse equipment, it specifically as follows:
as shown in fig. 10, the front panel is connected to the tested station through a radio frequency cable and an audio cable, the interference input interface of the front panel is connected to the output interface of the external interference environment simulator through a corresponding radio frequency cable, the power supply interface of the rear panel is connected to the power supply adapter interface, and then, after the tester is connected to the power supply through the power supply adapter, the tester is switched on and off and operated through the power supply switch at the lower left corner of the tester host; then, setting parameters, and configuring different interference parameters according to different interference contents, as shown in fig. 11 to 17, the setting parameters of the collision interference include: center frequency, peak power, interference bandwidth, frequency band bandwidth, dwell time, and frequency stepping; the setting parameters of the blocking interference comprise: center frequency, peak power, interference bandwidth; the setting parameters of aiming interference include: center frequency, peak power, interference bandwidth; the setting parameters of the comb interference comprise: center frequency 1, peak power 1, interference bandwidth 1, center frequency 2, peak power 2, interference bandwidth 2.
Example 3:
the utility model is used for training disturbs, it specifically as follows: the audio cable and the antenna port of the tested electric station are respectively connected with the audio interface and the radio frequency interface of the tester host, and the parameters are configured as follows: the conventional test only needs to select a corresponding test mode, including 'fixed frequency', 'frequency hopping' and 'error code', and click a 'conventional test' button on the right side of the interface; the conventional test mainly measures the technical performance of the radio station in an interference-free environment and is divided into a fixed frequency test, a frequency hopping test and an error code test;
test procedure for routine testing:
as shown in fig. 18 and 19, 1) the radio and tester are connected; 2) selecting an audio/radio station setting key of an interface, setting the output voltage and frequency of audio by a direction key and a confirmation key of a keyboard at the moment, and setting whether the current test state is a fixed frequency test, a frequency hopping test or an error code test; 3) after the audio frequency and voltage are set, a 'conventional test-start' button is clicked, at the moment, a 'status bar' can normally prompt the test process of the radio station, and a test result is displayed.
2) The anti-interference test, the tester host computer can choose any one of the interference pattern when carrying on the anti-interference test, the tester still has the input function of the external disturbance, connect "the interference signal of complicated electromagnetic environment produces the appearance" as the input of the external disturbance, its parameter configuration is as shown in fig. 20-22, the working pattern that the anti-interference performance of the general finger equipment is tested mainly divides into three: a fixed frequency anti-interference test, a frequency hopping anti-interference test and an error code anti-interference test; the main contents of the fixed frequency test include: carrier frequency, average power, modulation frequency offset, sensitivity, sinard, audio voltage; the main contents of the frequency hopping test include: frequency hopping rate, start frequency, end frequency, frequency change time, average power, sensitivity, sinard, audio voltage; the error code test comprises sending residue and receiving residue, and the main test contents comprise: bit sending number, bit error rate and test time; the anti-interference test can be carried out on the premise of firstly completing the conventional test, and the specific test steps are as follows:
1) as shown in fig. 18 and 19, the tester and the station are connected; 2) selecting a test item of radio station setting to finish conventional test; 3) selecting an interference parameter setting key to set an interference mode and an interference parameter; 4) the anti-interference test-start button is selected, the interference output-off is in the off state at the moment, and the anti-interference test-start button is selected when the test result (fixed frequency result: sinard and audio voltages; and (3) frequency hopping result: sinard and audio voltages; and (4) collecting a residual result: bit error number, total ratio special and bit error rate; sending residue without anti-interference test mode), selecting 'interference output-on' to enable an interference signal to be in an on state, enabling anti-interference measurement to be in a cyclic test, modifying interference parameters in real time, and observing real-time change of a test result so as to reflect the anti-interference capability of a radio station; 5) under the condition of not carrying out anti-interference test, the interference signal can be directly output, and only 'interference output-on' needs to be selected.
As shown in fig. 23, option settings, which include setting and monitoring of time and date, IP address, power supply monitoring parameters, and the like, are included.
Example 4:
as shown in fig. 24, the present invention is used for transceiver test of radio station, which accomplishes the test of the following indexes:
1) carrier power: the power measurement adopts a true effective value detection mode to extract carrier power;
2) frequency error: the frequency measurement is realized in the FPGA by adopting an equal-precision frequency measurement method;
3) frequency hopping rate: a frequency hopping frequency set is obtained by adopting a high-speed frequency measurement method, so that the estimation of the frequency hopping rate can be realized;
4) frequency hopping bandwidth: a time hopping frequency set is obtained by adopting a high-speed frequency measurement method, the maximum frequency and the minimum frequency are selected, and the frequency hopping bandwidth can be estimated by subtracting the maximum frequency and the minimum frequency.
The test of the host computer on the transceiver of the radio station comprises a transmitter test and a receiver test, and the test of various indexes of the transmitter of the radio station comprises an analog transmitter test and a digital transmitter test, and the test comprises the following steps:
an analog transmitter: the main machine generates single tone or double tone signal with assigned frequency and voltage, the PTT signal is set to control the radio station in emission state, the audio signal is output from radio station radio frequency port (antenna port) after being modulated in the radio station, the tester receives the signal from the radio frequency port, the signal is power-adjusted by the digital control attenuator, converted into intermediate frequency signal and filtered, then sent to digital signal processing by analog-to-digital conversion to complete various measurements, the whole testing process is automatically controlled by the main control module, and finally the measurement result is displayed by the man-machine interaction interface.
A digital transmitter: the main machine generates digital signal and sends it into the radio station data port, the control circuit station modulates the signal and outputs it from the radio station radio frequency port (antenna port), the tester receives the modulated signal through the radio frequency port, the power is adjusted by the digital control attenuator, the signal is converted into intermediate frequency signal and filtered, the signal is sent into the digital signal processor to complete the measurement, the whole test process is automatically controlled by the main control module, and finally the measurement result is displayed through the man-machine interface.
When testing various indexes of a transmitter of a radio station, the method comprises an analog receiver test and a digital receiver test, and specifically comprises the following steps:
as shown in fig. 25, the receiver test was simulated: the station operates in an analog voice communication mode, and the general test signal flow is as follows: firstly, a host computer generates a single-tone sinusoidal signal with specified frequency and voltage, a control circuit modulates the signal and outputs the signal in a fixed-frequency or frequency-hopping communication waveform from a radio frequency port of a radio station, the host computer receives the radio frequency signal through a radio frequency interface, power adjustment is carried out through a numerical control attenuator, frequency conversion and filtering are carried out on the radio frequency signal, the radio frequency signal is sent to a digital signal processing device for power analysis, and a data stream obtained by sampling is stored in a large-capacity memory; after the communication waveform is stored for a period of time, the tester takes out the stored communication waveform, outputs the communication waveform to a DA converter, then carries out filtering and frequency conversion, carries out power control (program control attenuation) according to a power analysis result and a required sensitivity index, and plays back the communication waveform as an excitation signal to a receiver through a radio frequency port; the receiver demodulates the radio frequency signal into an audio signal and outputs the audio signal to the tester for evaluating the audio index.
As shown in fig. 26, the digital receiver tests: the station operates in a data communication mode, and the general test signal flow is as follows: firstly, a set digital signal is generated by a host, a control console modulates the signal and outputs the modulated signal from a radio station radio frequency port, a tester receives the radio frequency signal through a radio frequency interface, power adjustment is carried out through a numerical control attenuator, analog-to-digital conversion is carried out after frequency conversion and filtering, then the radio frequency signal is sent to a digital signal processing device, and a data stream obtained by sampling is stored in a large-capacity memory; after storing a period of communication waveform, the tester takes out the stored communication waveform, outputs the communication waveform to the DA converter, and plays back the communication waveform as an excitation signal to a receiver through a radio frequency port after filtering, frequency conversion and level control; the receiver demodulates the radio frequency signal into a digital signal and outputs the digital signal to the host; and carrying out error rate analysis on the transmitted and received digital signals.
The analog receiver and the digital receiver mainly complete the tests of the following indexes:
as shown in fig. 27, the sensitivity was simulated: when the analog sensitivity is tested, the radio station works in an analog voice communication mode, which can be a fixed frequency or frequency hopping communication mode, firstly, a tester generates a standard audio signal and simultaneously sets a radio station PTT, then the tester collects the radio frequency signal, the collected data stream is stored in a large-capacity memory, after the communication waveform of a period of time is stored, the tester takes out the stored communication waveform as an excitation signal and plays back the excitation signal to a receiver through a radio frequency port; the receiver demodulates the radio frequency signal into an audio signal and outputs the audio signal to the host, tests audio indexes (mainly audio signal Nardo), reduces the power of the played back radio frequency signal if the radio frequency signal reaches the standard, circularly controls the power until the radio frequency signal does not reach the standard, stops reducing the power, and records the power value at the moment, namely the analog sensitivity.
As shown in fig. 28, digital sensitivity: when the digital sensitivity is tested, the radio station works in a data communication mode, the modulation mode is not limited, and the radio station can be a fixed frequency or frequency hopping communication mode. Firstly, standard data (test data) generated by a host computer is sent to a transmitter of a radio station, the radio station is controlled to generate a radio frequency signal, a tester acquires the radio frequency signal, acquired data flow is stored in a large-capacity memory, after a period of communication waveform is stored, the tester takes out the stored communication waveform as an excitation signal and plays back the excitation signal to a receiver through a radio frequency port; the receiver demodulates the radio frequency signal into data and outputs the data to the host for error rate analysis, if the data reaches the standard, the power of the played back radio frequency signal is reduced, power control is circularly carried out until the data does not reach the standard, the power reduction is stopped, and the power value at the time is recorded, namely the digital sensitivity.
Audio index: the audio index test is mainly matched with the analog sensitivity test, the tester receives audio signals demodulated by a radio station, the audio signals are sent to a digital signal processing device to realize various audio measurement algorithms after filtering and analog-to-digital conversion, and finally, measurement results are displayed.
The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.
Claims (9)
1. The utility model provides an anti-interference capability test appearance of communication is equipped in finger control which characterized in that: a host computer for testing the radio station; the power adapter supplies power to the host and converts an alternating current 220V power supply into a 12V direct current power supply; and a radio frequency test cable for connecting the host and the radio station antenna port; the audio connecting cable is used for connecting the host and the radio station audio port; and an interference input connecting cable for connecting the host computer with external interference input; the host comprises a machine body and a control panel arranged on the inner side of the machine body, wherein the control panel comprises a main control module; the front panel module is communicated with the main control module, the interference module is communicated through an RS485 interface and used for outputting various interference signals, the intermediate frequency module is communicated through a main control intermediate frequency interface, and the radio frequency module is communicated with the main control intermediate frequency interface through the RS485 interface; the radio frequency module is in communication connection with an attenuator module which comprises an attenuator unit and provides 20dB/50W attenuation, and a calibration signal input interface and a calibration signal output interface are arranged on the radio frequency module; the attenuator module is provided with a duplex port; the main control module is also provided with a power supply interface, a LAN interface, a USB interface, an RS232 interface, an audio input interface and an audio output interface.
2. The instrumentation of claim 1, wherein: the main control module comprises a main control unit for completing data transmission, calculation, man-machine interaction and system control; the low-frequency channel unit is communicated with the main control unit, selects an audio source which is determined to enter the AA unit, selects a signal source which enters the oscilloscope, is used for switching and controlling an audio/baseband communication mode and is communicated with the audio input interface and the audio output interface; and the audio frequency generating unit is communicated with the low-frequency channel unit and is used for generating audio signals, generating single-tone or double-tone audio signals with controllable frequency and level and providing input for a radio station audio port; the audio analysis unit is communicated with the low-frequency channel unit and the main control unit and is used for testing audio frequency, level and SINAD; the baseband error code testing unit is communicated with the low-frequency channel unit and the main control unit and is used for comparing and testing error codes; the power supply module is electrically connected with an output power interface of the power adapter and is used for power supply voltage stabilization and startup key detection;
the front panel module comprises a keyboard unit which is electrically connected with the main control unit, consists of a keyboard circuit and rubber keys and is used for completing the scanning and reading of a keyboard matrix; the display unit is electrically connected with the main control unit, consists of an LCD display screen and a display signal switching circuit board and completes parameter input and display; the interface unit is electrically connected with the main control module and comprises interfaces except the N-type duplex port on the front panel, a power switch and a circular fast connector switching circuit board;
the radio frequency module comprises a waveform acquisition channel unit which is used for completing impedance matching and port protection of an input interface, completing power control, frequency conversion and filtering of an input signal and providing input for A/D sampling: the waveform playback channel unit is used for filtering, frequency conversion and power control of D/A output signals, moving playback waveforms to radio frequency, completing impedance matching, port protection and final-stage signal driving of an output interface and being controlled by the waveform playback control unit; the input interface is communicated with the waveform playback channel unit and is used for synthesizing the interference signal and the modulation signal and realizing the waveform synthesis unit for synthesizing and outputting the interference signal; the interference unit is communicated with an input interface of the waveform synthesis unit and used for realizing the output of interference signals after receiving the parameter setting of the main control module; and an external interference interface which communicates with an input interface of the waveform synthesis unit and receives an external interference signal; and a selection switch in output communication with the waveform synthesis unit; the other input end of the selector switch is in communication connection with the attenuator module; the output end of the selection switch is connected with the input end of the waveform acquisition channel unit; the radio frequency local oscillator unit is communicated with the waveform playback channel unit and is used for frequency conversion of two local oscillators required by frequency conversion; the radio frequency control circuit unit is communicated with the main control unit and the waveform playback channel unit, is used for being in communication connection with an external controller, and receives commands from the main control module and controls the radio frequency module; and a radio frequency power supply circuit unit for supplying power to each circuit of the radio frequency module; the radio frequency signal generating module is communicated with the radio frequency control circuit unit and is used for testing the sensitivity of the ultra-short wave radio station; the intermediate frequency module comprises a waveform acquisition control unit which is connected with an A/D sampling output end of the waveform acquisition channel unit, a D/A output signal input end of the waveform playback channel unit and used for IF analog signal analog-to-digital conversion, data splicing, high-speed buffering and acquisition control; and a digital frequency meter unit in communication with the main control unit for digital frequency measurement; the analog demodulation unit is communicated with the main control unit, is used for FM and AM demodulation and modulation parameter measurement and comprises modulation frequency deviation and modulation amplitude; the sender frequency hopping measuring unit is communicated with the main control unit and is used for measuring sender frequency hopping parameters, wherein the sender frequency hopping measuring unit comprises frequency hopping rate and frequency hopping bandwidth; the intermediate frequency baseband error code testing unit is communicated with the main control unit and is used for realizing baseband error code testing together with the baseband error code testing unit on the mainboard module and finishing synchronous extraction and GMSK modulation; and the analog modulation generating unit is arranged at the D/A output signal input end of the waveform playback channel unit and is used for generating an FM signal, an AM signal and a fixed frequency signal.
3. The instrumentation of claim 1, wherein: the interface of the attenuator module comprises an N-type interface of an N-type radio frequency socket; the radio frequency cable is arranged outside a front panel of a host and is connected with a radio station antenna port through a radio frequency cable; and the SMA interface of the SMA type radio frequency socket is connected with the RF interface of the radio frequency module in the host through a semi-rigid shielding cable.
4. The instrumentation of claim 1, wherein: the interface of the radio frequency module comprises a master control radio frequency interface which adopts an RS485 serial signal as a power supply and a control signal; and adopt SMA socket, through the duplex mouth of half steel shield cable and the SMA interface connection of attenuator module: and adopt SMA socket, through half the calibration input interface that the SMA socket of the armoured cable and RFi on the back panel of the host computer connects; and adopt SMA socket, pass semi-steel shielded cable and SMA socket connection of RFo on the host computer back panel calibrate the output interface; and an IF output interface for inputting an IF signal from the digital intermediate frequency module; and an IF input interface for outputting an IF signal to the digital intermediate frequency module; outputting the standard clock to a standard clock source interface of the digital intermediate frequency module to provide a standard clock interface for the standard clock source interface; and a frequency meter interface for shaping the intermediate frequency signal into square wave pulse output; and a JTAG-RF interface for programming the radio frequency control MCU.
5. The instrumentation of claim 1, wherein: the interface of the interference module comprises an interference signal output interface which adopts an SMA socket and is used for outputting an interference signal to enter a radio frequency module unit; a PTK4 socket, a 5V power supply interface for providing a 5V/2A working power supply and a JTAG-MCU interface for programming and downloading a singlechip of the interference module are adopted; and the RS485 communication control interface is used for setting parameters of the interference module and controlling signal output by the main control unit.
6. The instrumentation of claim 1, wherein: the interface of the intermediate frequency module comprises an SPI (serial peripheral interface) and an ISA (industry standard architecture) bus connected with the main control unit, and a main control intermediate frequency interface of RCLK (remote control link), RDATA (remote data attachment), TCLK (transmission control link) and TDATA (time data attachment) signals connected with the BERT unit; and adopt SMA socket, IF input interface used for IF signal from module input of the radio frequency; and an IF output interface which adopts an SMA socket and is used for outputting the IF signal to the radio frequency module; and adopt 2 SSMB sockets, input the standard clock source interface to the intermediate frequency module from the radio frequency module, provide the standard clock interface of the standard clock (produced by temperature compensated crystal oscillator on the radio frequency module) for it; and adopt SMA socket, by the frequency meter interface of the intermediate frequency shaping pulse of the radio frequency module input: and an SMA socket is adopted, and the oscilloscope signals enter an oscilloscope interface of the IFOSC unit from the SMA socket;
a PTK4 socket is adopted to provide a 5V power supply interface of a 5V/2A working power supply; and programming and downloading FPGA
JTAG-FPGA interface.
7. The instrumentation of claim 1, wherein: the interface of the main control module comprises a round quick connector switching interface which is connected with an interface unit (INTF) and converges an XPA7 interface and an XPAD14 interface into an interface to enter a mainboard module; and an SMB socket is adopted for an audio input interface input from the front panel module; and an SMB socket is adopted, and an audio output interface is output from the front panel module; and a JTAG-MCU programming interface for programming the auxiliary control MCU; and a master control radio frequency interface which adopts RS485 serial signals as power supply and control signals; the master control intermediate frequency interface comprises an SPI (serial peripheral interface) and an ISA (industry standard architecture) bus connected with the ARM module, and RCLK, RDATA (serial peripheral interface), TCLK and TDATA (time dependent data attachment) signals connected with the BERT unit; the KB interface is connected with the keyboard unit by adopting a PTK4 socket and a USB signal; and connecting the display module by using a flexible flat wire, and contacting the socket display interface by using 0.5-40 bottoms of FPC; and adopt RJ45 socket, connect to the LAN interface of MC interface on the circuit board; and a mini USB socket is adopted, and the circuit board is connected to a USB _ OTG interface of the MC interface; and a USB1 interface of the first path of USB interface output by the USB HUB; and a USB2 interface of a second path of USB interface output by the USB HUB; the RS232 interface is used for connecting the circuit board to the RS485 bus and then converting the circuit board into RS232 for communication between the host and the outside; and a phi 2.1 socket is adopted, wherein a pin 1 is a +12 pin, and a pin 2 is a GND power interface; a PTK4-2.54 socket is adopted to connect a power switch interface between the power interface and the main control module; and a JTAG-DSP interface for programming the DSP.
8. The instrumentation of claim 1, wherein: the front panel module comprises an audio/data interface connected with the front panel audio/data interface; the XPA7 interface and the XPAD14 interface are converged into a round quick connector adapter interface, and the interface is connected with the mainboard module;
and a keyboard interface which adopts a PTK4-2.54(Z) interface and is used for connecting with the main control unit; and a FPC0.5-40 bottom contact socket is adopted, and a flexible flat cable is adopted to be connected to a display interface of the display module; and a switch interface connected to the power supply unit to control the switching of the host computer using a PTK4-2.54(Z) interface.
9. The instrumentation of claim 1, wherein: the organism is made by aluminum alloy material, its front panel from the top down of organism is from left to right in proper order: the tester comprises a tester name area, a liquid crystal display area and a keyboard input area; the display screen of the liquid crystal display area adopts a 7-inch 800 gamma 480 color TFT-LCD wide-temperature display module; the keyboard of the keyboard input area adopts silicon rubber keys, the keyboard input area comprises a function area, a number area, a control area and an interface area, and the rear panel of the machine body comprises a power supply connector of a YGD20B0802J type socket; the top and the right side of the machine body are provided with handles, the bottom of the machine body is provided with 4 supporting legs made of plastic materials, and the front 2 supporting legs are of a contraction structure.
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| CN202020282904.9U CN211352201U (en) | 2020-03-10 | 2020-03-10 | Communication anti-interference performance tester for finger control equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111404625A (en) * | 2020-03-10 | 2020-07-10 | 中国人民解放军32181部队 | Communication anti-interference performance tester for finger control equipment |
| CN112003653A (en) * | 2020-08-28 | 2020-11-27 | 中国人民解放军国防科技大学 | Method and device for testing frequency hopping frequency in built-in test of frequency hopping communication equipment |
| CN112235054A (en) * | 2020-10-15 | 2021-01-15 | 厦门大学 | Full-duplex underwater sound digital voice communication demonstration device and method thereof |
| CN112532053A (en) * | 2020-10-09 | 2021-03-19 | 中兴通讯股份有限公司 | Radio frequency power supply adjusting method, device, equipment and storage medium |
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2020
- 2020-03-10 CN CN202020282904.9U patent/CN211352201U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404625A (en) * | 2020-03-10 | 2020-07-10 | 中国人民解放军32181部队 | Communication anti-interference performance tester for finger control equipment |
| CN111404625B (en) * | 2020-03-10 | 2024-04-30 | 中国人民解放军32181部队 | Communication anti-interference performance tester for command equipment |
| CN112003653A (en) * | 2020-08-28 | 2020-11-27 | 中国人民解放军国防科技大学 | Method and device for testing frequency hopping frequency in built-in test of frequency hopping communication equipment |
| CN112532053A (en) * | 2020-10-09 | 2021-03-19 | 中兴通讯股份有限公司 | Radio frequency power supply adjusting method, device, equipment and storage medium |
| CN112532053B (en) * | 2020-10-09 | 2022-03-29 | 中兴通讯股份有限公司 | Radio frequency power supply adjusting method, device, equipment and storage medium |
| CN112235054A (en) * | 2020-10-15 | 2021-01-15 | 厦门大学 | Full-duplex underwater sound digital voice communication demonstration device and method thereof |
| CN112235054B (en) * | 2020-10-15 | 2021-06-08 | 厦门大学 | Full-duplex underwater sound digital voice communication demonstration device and method thereof |
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