JPS57147335A - Measuring device for frequency difference - Google Patents
Measuring device for frequency differenceInfo
- Publication number
- JPS57147335A JPS57147335A JP56032601A JP3260181A JPS57147335A JP S57147335 A JPS57147335 A JP S57147335A JP 56032601 A JP56032601 A JP 56032601A JP 3260181 A JP3260181 A JP 3260181A JP S57147335 A JPS57147335 A JP S57147335A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- measured
- reference signal
- phase
- intermittent
- 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
- 238000005259 measurement Methods 0.000 abstract 1
- 238000012806 monitoring device Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
Landscapes
- Measuring Frequencies, Analyzing Spectra (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To facilitate the measurement and matching of a signal to be measured by comparing the phase of an intermittent reference signal, generated by a phase control loop including a reference signal generator, with that of the signal to be measured. CONSTITUTION:The output signal of a reference signal generator 2 is applied to a phase control loop consisting of a phase comparator 6, a low-pass filter 8, a voltage-controlled oscillator 9, a frequency varying device 10, and a gate circuit 12, which is opened and closed under the control of an internal gate signal from a gate signal generator 15 or an external gate signal from a terminal 13, thereby calibrating an intermittent reference signal 18. Then, a switch 4 is placed at the side of a terminal 1 to supply the phase comparator 6 with a signal to be measured. A waveform monitoring device is connected to the output side of the low- pass filter 8 to monitor a waveform, and a phase error between the signal to be measured and intermittent reference signal is detected. Further, the signal to be measured and intermittent reference signal can be matched so that the phase error is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56032601A JPS57147335A (en) | 1981-03-09 | 1981-03-09 | Measuring device for frequency difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56032601A JPS57147335A (en) | 1981-03-09 | 1981-03-09 | Measuring device for frequency difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57147335A true JPS57147335A (en) | 1982-09-11 |
Family
ID=12363377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56032601A Pending JPS57147335A (en) | 1981-03-09 | 1981-03-09 | Measuring device for frequency difference |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57147335A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245819A (en) * | 1986-04-18 | 1987-10-27 | Mitsubishi Electric Corp | Synchronizing circuit |
-
1981
- 1981-03-09 JP JP56032601A patent/JPS57147335A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62245819A (en) * | 1986-04-18 | 1987-10-27 | Mitsubishi Electric Corp | Synchronizing circuit |
| JPH0531967B2 (en) * | 1986-04-18 | 1993-05-13 | Mitsubishi Electric Corp |
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