Stanford Research
Stanford Research FS725
Rubidium Frequency Standard
5 MHz and 10 MHz Output Frequency
±5 × 10⁻¹¹ per day (aging rate) Frequency Accuracy
-145 dBc/Hz at 1 Hz offset (10 MHz output) Phase Noise
+13 dBm into 50 Ω Output Level
Rubidium (Rb) Atomic Frequency Standard Oscillator Type
| Attribute | Value |
|---|---|
| Output Frequency | 5 MHz and 10 MHz |
| Frequency Accuracy | ±5 × 10⁻¹¹ per day (aging rate) |
| Phase Noise | -145 dBc/Hz at 1 Hz offset (10 MHz output) |
| Output Level | +13 dBm into 50 Ω |
| Oscillator Type | Rubidium (Rb) Atomic Frequency Standard |
| Warm-Up Time | Less than 5 minutes to within 5 × 10⁻¹⁰ of final frequency |
| Temperature Stability | ±5 × 10⁻¹⁰ over 0°C to 50°C |
| Power Requirements | 100–240 VAC, 50/60 Hz, 35 W typical |
| Operating Temperature | 0°C to 50°C |
| Dimensions | Half-rack, 1U (213 mm × 44 mm × 368 mm) |
Stanford Research FS725 Options:
- FS725 - Option 01 - Distribution amplifier (6 outputs)
- FS725 - Option 02 - Distribution amplifier (12 outputs)
- FS725 - Option 03 - Distribution amplifier (18 outputs)
- FS725 - O725RMD - Double rack mount kit
- FS725 - O725RMS - Single rack mount kit
| Model | FS725 |
|---|
The Stanford Research FS725 integrates a rubidium oscillator (SRS Model PRS10), a low-noise AC Power Supply, and distribution Amplifiers in a compact, half-width 2U chassis.
