TRA85 High-performance Rubidium atomic clock

TRA85-Low Phase Noise Rubidium Oscillator

The TRA85 is a high-performance rubidium atomic clock with excellent long-term stability, low phase noise, and fast lock capability. Utilizing advanced digital control and a temperature-controlled package design, it supports 1PPS and 10MHz outputs, achieving a frequency stability of 3E-12/1s. Its 10MHz short-term stability is comparable to that of mid-range cesium clocks, offering excellent value for money. It is suitable for high-precision applications such as radar, communications, metrology and calibration, astronomy, electronic countermeasures, and aerospace measurement and control.

TRA85 High-performance Rubidium atomic clock

Important Features

  • Operating temperature range -40℃ ~+65℃
  • The short-term stability is better than the 3E-12/1s
  • Room temperature stable power ≤ 15W
  • Low aging rate,low temperature frequency coefficient full temperature range＜ 2E-10,preferably to ＜ 5E-11
  • High stability and low phase noise,with a typical value of -135dBc/Hz@10Hz
  • 1PPS taming and 10MHz calibration
TRA85 Data Sheet

Important Features

Test ItemConditionTechnical Indicators
Output frequency10MHz，1-way sine wave（50Ω，≥7dBm）
Factory accuracy≤5×10-¹¹¹
Frequency controlVoltage pressure contorl0~5V，with the total range of at least ±1.5×10⁻⁹
Frequency controlInstruction adjustmentSeamless adjustment range of at least ±1×10⁻⁶，Resolution 6.81×10⁻¹³
Locking timeIndoor temperature≤5min
Frequency stability1s≤3×10-¹²
Frequency stability10s≤1.5×10-¹²
Frequency stability100s≤5×10-¹³
Phase noise1Hz≤-95dBc/Hz
Phase noise10Hz≤-130dBc/Hz
Phase noise100Hz≤-150dBc/Hz
Phase noise1kHz≤-160dBc/Hz
Phase noise10kHz≤-160dBc/Hz
Frequency drift rate±1×10⁻¹²/day，±3×10⁻¹¹/month；FD5：±5×10⁻¹³/day，±1×10⁻¹¹/month
Frequency reproducibilitySwitch 24h±2 x 10-¹¹
Temperature and Frequency Characteristics≤2×10-¹⁰; TC1: ≤1×10-¹⁰; TC0.5: ≤5×10-¹¹
Harmonic And Clutterharmonic≤-30dBc，clutter≤-80dBc
Working temperatureBottom plate temperature-40℃~+65℃
Storage temperature-40℃~+85℃
power supply±4%+12V~+15V or +24V
Rate of workPreheat≤45W
Rate of workSteady state （+25℃）≤15W
External DimensionBody size116mm×79mm×38mm
External DimensionBottom plate size127mm x 93mm
Weight≤500g
1PPS input+3V~+5V TTL，Judder<300ns，Pulse width＞100ns
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

滚动至顶部