TRM60 Miniature Rubidium atomic clock

Learn about our Miniature Rubidium atomic clock

The RM60 is a miniature intelligent atomic clock that supports 1PPS discipline and output, and operates in -40°C to +75°C environments. It offers a variety of performance options: the standard model offers 24-hour discipline and timekeeping of <1μs, while the high-performance version can replace imported miniature atomic clocks, offering excellent frequency stability, phase noise, and temperature drift performance. It is suitable for applications in power, communications, test equipment, frequency sources, electronic countermeasures, and unmanned equipment.

TRM60 Miniature Rubidium atomic clock

Important Features

  • Small volume 51*51*18mm, compatible with most miniature atomic clocks
  • The short-term stability is better than the 3E-11/1s
  • Room temperature stable power ≤ 8W (measured 5.5W)
  • 1PPS Input and 1PPS Output Functions
  • +5V power supply, can maintain performance within -40~+75℃
TRM60 Miniature Rubidium atomic clock manual

Important Features

Test ItemConditionTechnical Indicators
Output frequency10MHz，1-way square wave ，3.3V CMOS
Factory accuracyAfter calibration≤5×10⁻¹¹
Frequency controlVoltage pressure contorl0~5V, total range at least ±4×10⁻⁹, resolution better than 1×10⁻¹¹
CNC calibrationFine adjustment range > ±4×10⁻⁹, resolution better than 1×10⁻¹², coarse adjustment range > ±1×10⁻⁶
Locking timeIndoor temperature≤5min
Frequency stability1sStandard：≤1×10⁻¹⁰；A5：≤5×10⁻¹¹；A3：≤3×10⁻¹¹
Frequency stability10sStandard：≤3×10⁻¹¹；A5：≤1.6×10⁻¹¹；A3：≤1×10⁻¹¹
Frequency stability100sStandard：≤1×10⁻¹¹；A5：≤5×10⁻¹²；A3：≤3×10⁻¹²
Phase noise1HzStandard：/；PN65：≤-65dBc/Hz；PN85：≤-85dBc/Hz
Phase noise10HzStandard:≤-90dBc/Hz；PN65：≤-100dBc/Hz；PN85：≤-120dBc/Hz
Phase noise100HzStandard:≤-120dBc/Hz；PN65：≤-130dBc/Hz；PN85：≤-140dBc/Hz
Phase noise1kHz≤-140dBc/Hz
Phase noise10kHz≤-145dBc/Hz
Frequency drift rate/day±2.5×10⁻¹¹；FD10：±1×10⁻¹¹；FD5：±5×10⁻¹²；FD3：±3×10⁻¹²
Temperature and Frequency Characteristics0~70℃≤7×10⁻¹⁰；TC50：≤3×10⁻¹⁰；TC20：≤1×10⁻¹⁰；TC10：≤5×10⁻¹¹
Temperature and Frequency Characteristics-40~75℃≤1×10⁻⁹；≤5×10⁻¹⁰；≤2×10⁻¹⁰；≤1×10⁻¹⁰
Working temperatureBottom plate temperature-40℃~+75℃
Storage temperature-55℃~+100℃
power supply±4%+5V
Rate of workPreheat≤15W (if it is not necessary to adapt to -40℃ ,it can be reduced)
Rate of workSteady state(indoor temperature)≤8W (measured about 5.5W)
External DimensionBody size51mm×51mm×18mm
Weight<100g
1PPS input+3V~+5V TTL，Judder100ns
1PPS outputRising edge/falling edge: ≤10ns, pulse width: 1ms
Taming accuracyAfter 24h of synchronizationTaming jet lag：±50ns，Time-keeping accuracy：≤1us@24h，Frequency accuracy：≤1×10⁻¹²@24h

Typical phase noise

Frequency stability typical value

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