TRW70 Small and WideTemperature Rubidium atomic clock

Small and WideTemperature Rubidium atomic clock TRW70

The TRW70 is a wide-temperature, high-performance rubidium atomic clock, suitable for temperatures ranging from -50°C to +95°C. It features a compact design and high reliability. It offers excellent frequency stability and phase noise performance, built-in 1PPS training and output functions, supports 10MHz square wave output, and supports automatic external signal calibration. Its integrated digital control system features intelligent learning and health monitoring capabilities. Its interfaces are centralized on a single DSUB9 connector, making it easy to install in confined spaces. It is suitable for a variety of high-precision frequency comparison and customized applications.

TRW70 Small and WideTemperature Rubidium atomic clock

Important Features

  • It can work normally within -50℃ ~ + 95℃ range
  • Small volume76mm×76mm×18mm
  • The short-term stability is better than 3E-11 / 1s
  • Room temperature stable power ≤ 13W
  • Low-phase noise, with typical values -120dBc/Hz@10Hz
  • 1PPS taming and 10MHz calibration
TRW70 Data Sheet

Important Features

Test ItemConditionTechnical Indicators
Output frequency 10 MHz, 1-way sine wave （50Ω, ≥ 7dBm）and a 1-way 3 VTTL square wave
Factory accuracy≤5×10⁻¹¹
Frequency control Voltage control0~5V，with the total range of at least ±1.5×10⁻⁹
Instruction adjustment无缝调节范围至少±1×10⁻⁶，分辨率6.81×10⁻¹³粗调至少±1×10⁻⁶，精调范围至少±1.5×10⁻⁹，分辨率优于1×10⁻¹²
Locking time Indoor temperature≤5min
Frequency stability 1s≤3×10⁻¹¹
10s≤1×10⁻¹¹
100s≤3×10⁻¹²
Phase noise 1Hz≤-80dBc/Hz
10Hz≤-115dBc/Hz
100Hz≤-145dBc/Hz
1kHz≤-150dBc/Hz
10kHz≤-155dBc/Hz
Frequency drift rate /day±2×10⁻¹¹；FD12: ±1.2×10⁻¹¹；FD5: ±5×10⁻¹²；FD2: ±2×10⁻¹²
Frequency reproducibility Switch 24h±2×10⁻¹¹
Temperature Characteristics≤5×10⁻¹⁰；TC3: ≤3×10⁻¹⁰；TC1: ≤1×10⁻¹⁰；TC0.5: ≤5×10⁻¹¹
Harmonic And Clutterharmonic≤-30dBc，clutter≤-70dBc
Working temperature Bottom plate temperature-40℃ ~ +85℃；OT90：-45℃ ~ +90℃；OT95：-50℃ ~ +95℃
Storage temperature-50℃ ~ +95℃
Power supply ±4%±12V~±15V
Rate of workPreheat≤22.5W
Steady state （+25℃）≤13W
Body size68mm×68mm×18mm
Bottom plate size76mm×76mm
Weight<300g
1PPS input+3V~+5V TTL，Judder<300ns，Pulse width ＞ 100ns
1PPS outputRising edge / Falling edge：≤ 10ns，Pulse width：1us~999ms，
Taming accuracy After 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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