TRS75 Small and High-performance Rubidium atomic clock

Learn about our Small and High-performance Rubidium atomic clock

The TRS75 is a compact, high-performance rubidium atomic clock with a frequency stability of 6E-12/s, comparable to larger products. It integrates 1PPS discipline and output, a 10MHz square wave output, and external 10MHz signal calibration. It can be automatically calibrated using cesium or hydrogen clock signals and can also be used as a 10MHz frequency comparator. Its highly integrated interface outputs all signals through a single DSUB9 connector, making it suitable for installation in confined spaces. It is suitable for applications in radar, communications, metrology calibration, astronomy, electronic countermeasures, and aerospace measurement and control.

TRS75 Small and High-performance Rubidium atomic clock

Important Features

  • Small volume 76mm×76mm×18mm
  • The short-term stability is better than the 6E-12/1s
  • Room temperature stable power ≤ 14.5W
  • Stability typical value 2E-12/10s
  • Typical values of phase noise -125dBc/Hz@10Hz
  • 1PPS taming and 10MHz calibration
TRS75 Datasheet

Important Features

Test ItemConditionTechnical Indicators
Output frequency10MHz，1-way sine wave（50Ω，≥7dBm）and a 1-way 3VTTL square wave
Factory accuracy≤5×10⁻¹¹
Frequency controlVoltage pressure contorl0~5V，with the total range of at least ±1.5×10⁻⁹
Frequency controlInstruction adjustmentCoarse adjustment range of at least ±1×10⁻⁶, fine adjustment range of at least ±1.5×10⁻⁹, and resolution better than 1×10⁻¹²
Locking timeIndoor temperature≤5min
Frequency stability1s≤1×10⁻¹¹；AD6：≤6×10⁻¹²
Frequency stability10s≤3×10⁻¹²；AD6：≤2×10⁻¹²
Frequency stability100s≤1×10⁻¹²；AD6：≤6×10⁻¹³
Phase noise1Hz≤-85dBc/Hz
Phase noise10Hz≤-120dBc/Hz
Phase noise100Hz≤-145dBc/Hz
Phase noise1kHz≤-150dBc/Hz
Phase noise10kHz≤-155dBc/Hz
Frequency drift rate/day±1×10⁻¹¹；FD5：±5×10⁻¹²；FD3：±3×10⁻¹²；FD1：±1×10⁻¹²
Frequency reproducibilitySwitch 24h±2×10⁻¹¹
Temperature and Frequency Characteristics≤5×10⁻¹⁰；TC3：≤3×10⁻¹⁰；TC1：≤1×10⁻¹⁰；TC0.5：≤5×10⁻¹¹
Harmonic And Clutterharmonic≤-30dBc，clutter≤-70dBc
Working temperatureBottom plate temperature-40℃~+65℃
Storage temperature-40℃~+85℃
power supply±4%+12V~+15V
Rate of workPreheat≤28.5W
Rate of workSteady state （+25℃）≤14.5W
External DimensionBody size68mm×68mm×18mm
External DimensionBottom plate size76mm×76mm
1PPS input+3V~+5V TTL，Judder100ns
1PPS outputRising edge/falling edge: ≤10ns, pulse width: 1us~999ms
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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