PRODUCT
PRODUCT
Cesium Frequency Standard
發布者:Synchionization Technology Ltd.  作者:  發布時間:2020-12-07  瀏覽量:571次

 

 

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           Sync-tech’s frequency standard (BD 1024) delivers exceptional frequency stability. Thanks to a stability specification for 30-day averaging time, the clock can keep extremely predictable time and phase for long periods. Combined with a GPS timing receiver the frequency standard can produce a highly robust, inexpensive, and redundant frequency and time system.




Benefits

  • Maintains exceptional accuracy and stability even in unstable environments—unsurpassed stability in the lab or field

  • Accuracy ±1.0 x 10–12 for standard performance; ±5.0 x 10–13 for high performance

  • Stability ≤1.2 x 10–11 for standard performance; ≤5.0 x 10–12 for high performance (for 1 second averaging time)

  • Environmental stability ±1.0 x 10–13 for standard performance; ±8.0 x 10–14 for high performance (frequency change for any combination of environmental conditions)

  • Long-term stability ≤5.0 x 10–14 for standard performance; ≤1.0 x 10–14 for high performance (for 5-day averaging time)

  • Proven reliability with an average mean time between failures (MTBF) of greater than 160,000 hours


KEY SPECIFICATIONS

PRODUCT FEATURES

SPEC

PARAMETER

REMARK

Outputs

 

Frequency

10MHz,5MHz,1MHz,100KHz


Format

sine


Amplitude

>1Vrms(13dBm)


Harmonic

<-40dBc


Non-harmonic

<-80dBc


Load impedance

50Ω


Isolation between ports

>110dB


Connector

BNC


Member of outputs

5MHz(2)10MHz(2)1MHz(1),100KH(1)


Timing outputs

 

Format

1PPS


Amplitude

≥2.4V


Pulse width

≥20us


Rise time

<2ns


Jitter

< 1ns


Connector

BNC


Sync input

Amplitude

+2~+10V


Pulse width

100ns~100us


Rise time

<50ns


load impedance

50Ω


Connector

BNC


Stability(Allan Deviation)

 

Average time

High Performance

Standard Performance

1S

5E-12

1.2E-11

10S

3.5E-12

8.5E-12

100S

8.5E-13

2.7E-12

1000S

2.7E-13

8.5E-13

10000S

8.5E-14

2.7E-13

100000S

2.7E-14

8.5E-14

5days

1.0E-14

5E-14

SSB Phase Noise 10MHz

Offset(Hz)

High Performance

Standard Performance

1

-105 dBc

-100 dBc

10

-140 dBc

-130 dBc

100

-155 dBc

-145 dBc

1k

-162 dBc

-150 dBc

10k

-168 dBc

-154 dBc

100k

-169 dBc

-154 dBc

Accuracy


±5E-13 ≤±1E-12


image.png

Frequency deviation curve of a BD1024A cesium clock calibrated at the Chinese Academy of Metrology (test time:45 days, typical values). Each cesium clock is delivered with the results of the clock's calibration.

image.png

Stability Indicators for Cesium Clock BD1024 (45-day test time)


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