Efratom PRFS-202 Rubidium Frequency Standard

The Efratom PRFS-202 is a portable rubidium frequency standard designed for applications requiring a highly stable and accurate 10 MHz output signal. It is 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.