JPS56115961A - Phase characteristic measuring system - Google Patents
Phase characteristic measuring systemInfo
- Publication number
- JPS56115961A JPS56115961A JP1874080A JP1874080A JPS56115961A JP S56115961 A JPS56115961 A JP S56115961A JP 1874080 A JP1874080 A JP 1874080A JP 1874080 A JP1874080 A JP 1874080A JP S56115961 A JPS56115961 A JP S56115961A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- frequency
- signals
- characteristic
- signal
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
PURPOSE:To make it possible to make the compensation of a characteristic at the time of generated phasing by measuring the phasial characteristic by using plurality of pilot signals while transmitting signals in the broad zone transmission system. CONSTITUTION:From the transmitter 4 the transmission signal is sent out being added with two pilot signals f1 and f2 (f2/f1=n) through a signal synthesizer 3. The output f2 of the voltage control oscillator 2 is made of the frequency f1 by means of a phase shifter 5 and by a n frequency divider 6 to detect the phase difference from the output f1 of the oscillator 1 through a phase detector 7. The detected phase difference is fed back to the voltage control oscillator 2 to lock the phase f2. The braod zone signals received by the receiver 8 are separated into the transmission signals f1 and f2 through a wave divider 9, then f2 is made of the frequency f1 through the phase shifter 10 and the n frequency divider 11. By detecting the phasial relation of the frequency divided f1 to the signal f1 directly transmitted by the phase detector 12 the phase characteristic of the circuit can be measured during transmitting time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1874080A JPS56115961A (en) | 1980-02-18 | 1980-02-18 | Phase characteristic measuring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1874080A JPS56115961A (en) | 1980-02-18 | 1980-02-18 | Phase characteristic measuring system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56115961A true JPS56115961A (en) | 1981-09-11 |
Family
ID=11980056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1874080A Pending JPS56115961A (en) | 1980-02-18 | 1980-02-18 | Phase characteristic measuring system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56115961A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006122642A (en) * | 2004-09-30 | 2006-05-18 | Tokyo Univ Of Science | Exercise stress providing device |
-
1980
- 1980-02-18 JP JP1874080A patent/JPS56115961A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006122642A (en) * | 2004-09-30 | 2006-05-18 | Tokyo Univ Of Science | Exercise stress providing device |
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