Stanford Research
Stanford Research SR850
DSP Dual Phase Lock In Amplifier
1 mHz to 102.4 kHz Frequency Range
Up to 100 dB Dynamic Reserve
5 nV/√Hz at 1 kHz Input Voltage Noise
1 nV to 1 V (voltage mode); 1 fA to 1 µA (current mode) Full-Scale Sensitivity
Up to 32,767th harmonic of the reference frequency Harmonic Detection
| Attribute | Value |
|---|---|
| Frequency Range | 1 mHz to 102.4 kHz |
| Dynamic Reserve | Up to 100 dB |
| Input Voltage Noise | 5 nV/√Hz at 1 kHz |
| Full-Scale Sensitivity | 1 nV to 1 V (voltage mode); 1 fA to 1 µA (current mode) |
| Harmonic Detection | Up to 32,767th harmonic of the reference frequency |
| Reference Input | Internal oscillator or external TTL/analog reference signal |
| Output | Two auxiliary analog outputs (±10.5 V range), RS-232 and GPIB interfaces |
| Display | Large graphics LCD display with simultaneous display of multiple parameters |
| Data Storage | Internal buffer stores up to 32,768 points per channel at sample rates up to 512 Hz |
| Signal Input Configuration | Single-ended or differential voltage input; current input with 1 MΩ or 100 MΩ converter |
| Model | SR850 |
|---|
Digital lock-in amplifier based on an innovative DSP (Digital Signal Processing) architecture
