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STM-Rb-M Series Miniature Rubidium Clocks
STM-Rb-M Series Miniature Rubidium Clocks
The STM-Rb-M series miniature rubidium atomic clock is a surface-mount rubidium atomic frequency standard product with a device size of only 50mm * 50mm * 19mm. The through-hole pin design allows for direct installation on a board or in a circuit.
Product features

1PPS Taming Function

Small Size, Lightweight

Pin Compatible with SA.31, SA.35, SA.55

Fast Lock and Taming, Frequency Accuracy

Better than 5E-11 within 300 Seconds after Power On

Product Features

Specification name

Indicator parameters

Remark

RF Output

Frequency

10MHz (square wave)

1 Channe

Output amplitude

LVCOMS

Duty cycle 50% ± 10

Factory accuracy

± 5E-11

+25℃

Taming accuracy

1E-12/24h


Short-term stability

Conventional model: 5.0E -1 1 /1s; < 3.0E -1 1 /10s; < 7.0E -1 1 /100s

Professional model: < 3.0E -1 1 /1s; < 1.0 E-1 1 /10s; < 4.0E -1 2 /100s

Phase Noise

Regular model:

1Hz ≤- 70 dBc/Hz

10Hz ≤- 100dBc/Hz

100Hz ≤- 123dBc/Hz

1kHz ≤- 142dBc/Hz

1 0 kHz ≤- 150dBc/Hz

Professional model:

1Hz ≤- 70 dBc/H

10Hz ≤- 100dBc/Hz

100Hz ≤- 123dBc/Hz

1kHz ≤- 142dBc/Hz

1 0 kHz ≤- 150dBc/Hz

Timekeeping accuracy

0.8us/24h

aging

± 5.0E-12/day

Spurious suppression

-80dBc

Frequency reproducibility

± 5 E-11

1PPS output

Rise time

2ns

Pulse Width

500us~500ms (default 100ms)

Level

4.5V(1MΩ/15pF load)

Monitoring and Control

Frequency modulation accuracy

5E-13


Lock Time

≤ 3 min.

Tame lock query via serial port

Condition Monitoring

Rubidium clock lock indication

Communication monitoring

Serial port LVTTL


Supply voltage

Input voltage

+12~15VDC

Maximum current

≤1.4A (+25°C)

Steady-state current

0.5A (+25°C)

environment

Operating temperature

-40℃~+60℃

Storage temperature

-55℃~+85℃

Relative humidity

≤85% non-condensing (working state)

Appearance

weight

110g

size

50mm×50mm×19mm



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