SRS SIM960 Analog PID Controller (Analogue)
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- Analog signal path with digital control
- 100 kHz bandwidth
- Low noise front-end
- P, I, D and Offset settable to 0.5 %
- Anti-windup (fast saturation recovery)
- Bumpless transfer, manual to PID
- Analog setpoint with smooth ramping
- Smooth upper/lower limit clamping
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The Stanford Research Systems SIM960 Analog PID Controller is a unique instrument intended for the most demanding control applications. It combines analog signal handling with digital control, giving you the best of both worlds. High bandwidth (100 kHz) control loops may be implemented without discrete time or quantization artifacts.
The low noise front-end brings better performance to noise sensitive applications including cryogenics, scanning probe microscopy and others. User settable gain of up to 1000´ means greater flexibility, reducing the need for input preamplification. The unit can be used together with the SRS SIM921 AC Resistance Bridge providing a flexible and cost-effective temperature control solution.
An internal ramp generator can control voltage slew rate between predefined start and stop setpoints. The output is clamped within upper and lower user limits to guard against system overload. The conditional integration electronics provide anti-windup on the integrating capacitors, leading to faster recovery from saturation conditions.
Front panel control enables easy modification of system parameters and convenient monitoring of input and output signals. Power and serial communication are via a 15-pin D-sub connector which mates with the SIM900 mainframe. All instrument parameters can be set and queried via the serial interface.
The amplified error signal (P x ε) and the output may be monitored with an LED bar display or via the millivolt resolution numeric display. The Setpoint and Measure input signals can also be monitored on the numeric display.
| Control type | Analog, PID + Offset |
| Proportional gain | 10−2 to 103 |
| Integral gain | 10−1 s−1 to 105 s−1 (effective time constant 10−5 s to 10 s) |
| Derivative gain | 10−7 s to 1 s |
| Offset | ±10 V, 1 mV resolution |
| Bandwidth | 100 kHz |
| Propagation delay | 1 μs (typ.) |
| Noise (typ.) | 8 nV/√Hz above 10 Hz (ref. to input) |
| Parameter control | Digital |
| Parameter accuracy | 1% |
| Stability | 200 ppm/°C |
| Setpoint | |
| External | Front BNC input |
| Internal | ±10 V range with 1 mV resolution |
| Setpoint noise | 20 nV/√Hz above 100 Hz |
| Ramp | Internal setpoint linear ramping from 10−3 to 104 V/s |
| Amplifier output | ±10 V with adj. upper/lower limits |
| Display resolution | 4 digits |
| Units | s−1, s, V, V/s |
| Operating temperature | 0 °C to 40 °C, non-condensing |
| Interface | Serial via SIM interface |
| Connectors | BNC (3 front, 2 rear) DB15 (male) SIM Interface |
| Power | ±15 V (150 mA), +5 V (80 mA) |
| Dimensions | 3.0" × 3.6" × 7.0" (WHD) |
| Weight | 2.1 lbs. |
| Warranty | One year parts and labour on defects in materials and workmanship |
Stanford Research Systems SIM960 datasheet
Stanford Research Systems SIM960 operation and service manual
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