JPS577635A - Measuring method of phase synchronizing circuit - Google Patents
Measuring method of phase synchronizing circuitInfo
- Publication number
- JPS577635A JPS577635A JP8201580A JP8201580A JPS577635A JP S577635 A JPS577635 A JP S577635A JP 8201580 A JP8201580 A JP 8201580A JP 8201580 A JP8201580 A JP 8201580A JP S577635 A JPS577635 A JP S577635A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- synchronizing circuit
- pulse
- phase comparator
- circuit
- 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
- 238000009499 grossing Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 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
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/095—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using a lock detector
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To measure and evaluate operation characteristics of a phase synchronizing circuit by providing a phase comparator in parallel to another phase comparator in a phase synchronous loop and by extracting a phase difference and a polarity by inputting a command pulse and a response pulse as a digital signals. CONSTITUTION:In addition to a phase comparator 3 in a loop constituting a phase synchronizing circuit, another phase comparator 7 for measurement is provided in parallel. A command pulse 2 and a response pulse 6 are inputted to the phase comparator 7 and then a pulse output corresponds to their phase difference is displayed on a display device 9 by way of a smoothing circuit 8. Consequently, the digital signals are used directly as signals for measuring a phase difference, so the operation characteristics of the phase synchronizing circuit are measured without influencing the circuit itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8201580A JPS577635A (en) | 1980-06-17 | 1980-06-17 | Measuring method of phase synchronizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8201580A JPS577635A (en) | 1980-06-17 | 1980-06-17 | Measuring method of phase synchronizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS577635A true JPS577635A (en) | 1982-01-14 |
Family
ID=13762687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8201580A Pending JPS577635A (en) | 1980-06-17 | 1980-06-17 | Measuring method of phase synchronizing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS577635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142665A (en) * | 2004-05-06 | 2011-07-21 | Hynix Semiconductor Inc | Semiconductor device capable of using information on delay lock state of delay locked loop |
-
1980
- 1980-06-17 JP JP8201580A patent/JPS577635A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011142665A (en) * | 2004-05-06 | 2011-07-21 | Hynix Semiconductor Inc | Semiconductor device capable of using information on delay lock state of delay locked loop |
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