Stanford Research
Stanford Research SIM940
Rubidium Frequency Standard
DC to 100 MHz Frequency Range
±0.5 ppm per year aging rate Timebase Stability
10 MHz sine wave output Output Frequency
-130 dBc/Hz at 1 kHz offset Phase Noise
+13 dBm into 50 Ω Output Level

| Attribute | Value |
|---|---|
| Frequency Range | DC to 100 MHz |
| Timebase Stability | ±0.5 ppm per year aging rate |
| Output Frequency | 10 MHz sine wave output |
| Phase Noise | -130 dBc/Hz at 1 kHz offset |
| Output Level | +13 dBm into 50 Ω |
| Temperature Coefficient | ±0.05 ppm over 0°C to 70°C |
| Interface | SIM (Small Instrumentation Modules) backplane compatible |
| Power Requirements | Powered via SIM900 mainframe backplane |
| Operating Temperature | 0°C to +40°C |
| Module Size | Single-wide SIM module form factor |
| Model | SIM940 |
|---|
The Stanford Reasearch SIM940 integrates a rubidium oscillator (SRS Model PRS10) into the SIM900 platform.




