The Efratom PRFS-202 is a portable rubidium frequency standard designed for applications requiring a highly stable and accurate 10 MHz output signal. It serves as a master oscillator in laboratories, for field calibration services, and for applications demanding precise timing and synchronization. The PRFS-202 utilizes an Efratom FRS-C rubidium atomic oscillator as its core component, ensuring exceptional frequency stability and accuracy.
### Technical Specifications
**Electrical Performance:**
* **Output Frequencies:**
* 5 MHz sine wave
* 10 MHz sine wave
* 1 MHz TTL (switchable)
* 5 MHz TTL (switchable)
* 10 MHz TTL (switchable)
* **Output Level (Sine):** 0.85 ± 0.25 Vrms into 50 Ohms
* **Harmonic/Non-Harmonic Distortion (Sine):** >30 dBc
* **Frequency Accuracy at Shipment:** ±5E-11 (at 25°C)
* **Aging:** 5E-11 per month (after 1 month of continuous operation)
* **Frequency Retrace:** 5E-11 (after 1 hour power on at 25°C and up to 24 hours power off)
* **Short-Term Stability:**
* 1E-10, t = 1 sec
* 3.16E-11, t ≈ 10 sec
* 1E-11, t = 100 sec
* **Trim Range:** ±2E-9 nominal
* **Setting Resolution:** 1E-11
* **Warm-up Characteristics:** <6 minutes to reach 1E-9 at 25°C ambient**Phase Noise (SSB, 1 Hz BW):*** >110 dBc @ 100 Hz from carrier
* >130 dBc @ 1000 Hz from carrier
**Power Requirements:**
* **Input Voltage:** 115/220 Vac (selectable via internal wiring, but no change required for operation)
* **Input Frequency:** 47-400 Hz
* **Power Consumption:** ≤25 watts (steady state)
**Environmental Specifications:**
* **Operating Temperature Range:** 0°C to +50°C (ambient)
* **Storage Temperature Range:** -40°C to +60°C
* **Altitude:** 1E-13/mbar (sea level to 40,000 ft.)
* **Magnetic Field Sensitivity:** <4E-13/AM² (worst case); 3E-11/gauss
* **Relative Humidity:** 95% (non-condensing)
* **Startup Temperature Limit:** Unit will not start up in temperatures below -10°C.**Physical Characteristics:*** **Weight:** <15.0 lbs
* **Dimensions:** 5.79 in. high x 10.13 in. wide x 11.38 in. long (handle not included)**Interfaces:*** **Output Connectors:** BNC female type for sine outputs.
* **Indicators:**
* Power (Green LED)
* Rb Lock (Green LED)
* **Controls:** Power ON/OFF switch**Included Accessories:*** AC line cord, Switchcraft, P/N 91-T-3261-1
* Fuse - 3A, 250 V, 3AG Slo-Blo Type**Optional Accessories:*** Spare fuses### Why Choose Aumictech for Efratom PRFS-202?At Aumictech, we specialize in supplying high-end rubidium frequency standard equipment. Whether you need reliable, high-accuracy frequency references, precise timing for critical systems, or stable signal generation for test and measurement, our team ensures the Efratom PRFS-202 delivers maximum performance for your application.
