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FAB rubidium clock is basically a crystal oscillator locked to an atomic reference. The rubidium physics package servers as passive discriminator, producing an error signal that varies in magnitude and sense as a function of the difference in frequency between the applied RF excitation and the atomic resonance.
Rubidium clock is a small, low weight and low cost atomic standard that is quickly activated. It delivers good phase noise performance, exhibits low G force sensitivity, and operates in a wide temperature range. These advantages make it an ideal alternative to quartz technology.
Rubidium clocks provide rapid operational stability after turn on, exhibit better long term aging characteristics, and are less susceptible to physical effects.
【Specification Data Sheet】
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Item |
Data |
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Warm Up Time |
5 mins to lock |
10 mins to lock |
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<1E -8 |
<1E -9 |
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Lock monitor |
TTL level (high(5V) when out of lock, low(0V) when locked) |
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Frequency Adjustment |
Voltage-control adjusting, Control Voltage2.5V+/-2.5V |
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Output frequency |
10MHz sine wave |
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Frequency accuracy |
<=5E -11 |
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Frequency Retrace |
<=2E -11 |
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Allan Deviation(Short-term stability) |
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1s |
<=1E -11 |
<=5E -12 |
<=3E -12 |
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10s |
<=3E -12 |
<=1.7E -12 |
<=1E -12 |
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100s |
<=1E -12 |
<=5E -13 |
<=3E -13 |
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Aging(day) |
<=3E -12 |
<=1E -12 |
<=3E -13 |
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TempCo (0~50℃) |
<=3E -10 |
<=1E -10 |
<=5E -11 |
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Phase noise(SSB) |
dBc/Hz |
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1Hz |
<= -80 |
<= -85 |
<= -90 |
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10Hz |
<= -100 |
<= -110 |
<= -115 |
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100Hz |
<= -130 |
<= -135 |
<= -140 |
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1kHz |
<= -140 |
<= -145 |
<= -150 |
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10kHz |
<= -150 |
<= -155 |
<= -155 |
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Harmonics distortion |
<= -30 dBc |
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Spurious |
<= -70dBc |
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Output Levels |
7dBm~9dBm |
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Operating temperature ranges ℃ |
-20℃ ~ +50℃ |
-20℃ ~ +60℃ |
-40℃ ~ +60℃ |
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Storage temperature ℃ |
-55℃ ~ +85℃ |
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Supply voltage |
+15VDC or +24VDC |
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Voltage stability |
<2E -11 V |
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Weight |
<= 500g |
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Size mm |
129.5 X 87.4 X 39 |
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