JPS5728431A - Standard clock generator - Google Patents
Standard clock generatorInfo
- Publication number
- JPS5728431A JPS5728431A JP10338880A JP10338880A JPS5728431A JP S5728431 A JPS5728431 A JP S5728431A JP 10338880 A JP10338880 A JP 10338880A JP 10338880 A JP10338880 A JP 10338880A JP S5728431 A JPS5728431 A JP S5728431A
- Authority
- JP
- Japan
- Prior art keywords
- switches
- oscillators
- frequency
- reliability
- systems
- 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.)
- Granted
Links
- 229910052792 caesium Inorganic materials 0.000 abstract 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000001514 detection method 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
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To increase the reliability, by selecting an oscillator which outputs an average frequency of a cesium atomic oscillators of >=3 sets being in operation at all times, and providing >=2 systems of phase synchronism oscillators and existing and spare set switches. CONSTITUTION:Cesium atomic oscillators 1a-1d are in common connection to priority selection switches 23a, 23b via failure detection circuits 7a-7d. Frequency measuring monitors 22a, 22b measure the frequency deviation rate of three systems of signals and a signal in an average frequency is transmitted to existing and spare set switches 26a, 26b through the selection of switches 24a, 24b. The switches 26, 26b control a switch controlling section 25 with the signal of the monitors 22a, 22b. Synchronizing oscillators 28a, 28b are dependent on the switches 26a, 26b and an output is obtained via selector switches 31a, 31b. Thus, each section is duplicated and the reliability can be increased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10338880A JPS5728431A (en) | 1980-07-28 | 1980-07-28 | Standard clock generator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10338880A JPS5728431A (en) | 1980-07-28 | 1980-07-28 | Standard clock generator |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5728431A true JPS5728431A (en) | 1982-02-16 |
JPS6226605B2 JPS6226605B2 (en) | 1987-06-10 |
Family
ID=14352687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10338880A Granted JPS5728431A (en) | 1980-07-28 | 1980-07-28 | Standard clock generator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5728431A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60167524A (en) * | 1984-02-10 | 1985-08-30 | Matsushita Electric Ind Co Ltd | Signal switch |
JPS63309024A (en) * | 1987-04-17 | 1988-12-16 | サントル・ナシオナル・デチュド・スパシアル | Time standard apparatus with substantially constant stability for short term and long term time measurement |
JPH0267820A (en) * | 1988-09-02 | 1990-03-07 | Toyo Commun Equip Co Ltd | Standard frequency clock generator |
JPH03201822A (en) * | 1989-12-28 | 1991-09-03 | Nec Corp | Signal oscillating device |
-
1980
- 1980-07-28 JP JP10338880A patent/JPS5728431A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60167524A (en) * | 1984-02-10 | 1985-08-30 | Matsushita Electric Ind Co Ltd | Signal switch |
JPH0458732B2 (en) * | 1984-02-10 | 1992-09-18 | Matsushita Electric Ind Co Ltd | |
JPS63309024A (en) * | 1987-04-17 | 1988-12-16 | サントル・ナシオナル・デチュド・スパシアル | Time standard apparatus with substantially constant stability for short term and long term time measurement |
JPH0267820A (en) * | 1988-09-02 | 1990-03-07 | Toyo Commun Equip Co Ltd | Standard frequency clock generator |
JPH03201822A (en) * | 1989-12-28 | 1991-09-03 | Nec Corp | Signal oscillating device |
Also Published As
Publication number | Publication date |
---|---|
JPS6226605B2 (en) | 1987-06-10 |
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