JPS54108511A - Testing method for repeater of individual amplifier type - Google Patents
Testing method for repeater of individual amplifier typeInfo
- Publication number
- JPS54108511A JPS54108511A JP1571678A JP1571678A JPS54108511A JP S54108511 A JPS54108511 A JP S54108511A JP 1571678 A JP1571678 A JP 1571678A JP 1571678 A JP1571678 A JP 1571678A JP S54108511 A JPS54108511 A JP S54108511A
- Authority
- JP
- Japan
- Prior art keywords
- repeater
- distorted
- frequency
- adjacent
- repeaters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE:To make it possible to prevent adjacent distorted waves from arriving in reverse order with a time difference between the both made large, by providing a bypass circuit which allows distorted waves different in frequency to return from an adjacent repeater. CONSTITUTION:Repeaters (n) and (n+2) arranged on the transmission line on a two-wire transmission system send back a distorted wave of frequency (fH0) and repeaters (n) and (n+2) send back a distorted wave of frequency (fH1). In this case, a test signal by a distorted wave passing through a fixed bypass circuit is sent out by receiving distortions from terminal stations 1 and 12 by an amplifier, and the distorted wave sent back from each repeater is detected to test each repeater. Consequently, it can be prevented that adjacent distorted waves arrive in reverse order with the time difference between them made large.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1571678A JPS54108511A (en) | 1978-02-14 | 1978-02-14 | Testing method for repeater of individual amplifier type |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1571678A JPS54108511A (en) | 1978-02-14 | 1978-02-14 | Testing method for repeater of individual amplifier type |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54108511A true JPS54108511A (en) | 1979-08-25 |
Family
ID=11896479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1571678A Pending JPS54108511A (en) | 1978-02-14 | 1978-02-14 | Testing method for repeater of individual amplifier type |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54108511A (en) |
-
1978
- 1978-02-14 JP JP1571678A patent/JPS54108511A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1485567A (en) | Methods of fault location for fourwire carrier frequency systems | |
ES459759A1 (en) | Fault locating apparatus for digital transmission system | |
US4605902A (en) | Hybrid junction signal combiner | |
US3721777A (en) | Echo path delay simulator for use with adaptive echo cancellers | |
ATE7439T1 (en) | METHOD OF KEEPING DIGITAL COMMUNICATION EQUIPMENT FUNCTIONAL AND APPLICATION OF SAME. | |
US4144417A (en) | Echo cancelling system | |
GB970736A (en) | Improvements in or relating to pulse communication systems | |
JPS54108511A (en) | Testing method for repeater of individual amplifier type | |
GB1384502A (en) | Apparatus for adjusting equalizers of signal transmission systems | |
GB1409293A (en) | Signal transmission systems | |
KR960009450A (en) | Local wireless link remote communication device | |
GB1289378A (en) | ||
US3305647A (en) | Signal transmission analysis system | |
JPS5726947A (en) | Remote test system for data communication line | |
JPS5372514A (en) | Fault detector of repeater | |
GB1487073A (en) | Communication system including a response analyser for receiving different frequency signals | |
JPH02145986A (en) | Apparatus for discriminating moving bodies | |
SU801320A1 (en) | Audio call receiver | |
JPS53136418A (en) | Signal repeating installation | |
JPS5755642A (en) | Branch circuit communication system | |
SU1157494A1 (en) | Telemetric seismic prospecting system | |
GB1522663A (en) | Data modems with automatic equalization drop-out detection and data echo protection | |
FR2390859A1 (en) | Transceiver arrangement for telecommunications connections - enables dual frequency, speech connection to be made with selected other send-receive arrangement via tuned relay amplifiers (NL 15.11.78) | |
JPS57201350A (en) | Information transmission system | |
JPS5549062A (en) | Test system for subscriber's call meter |