Catalog excerpts
The 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 laser power and wavelength stabilization, 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 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 Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com 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 × å ) 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. SIM960 Analog PID Controller Small Instrumentation Modules SIM960 . 100 kHz analog PID controller · Analog signal path / 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 · SIM960 ... $1750 (U.S. list) www.thinkSRS.com
Open the catalog to page 1SIM960 Specifications Stanford Research Systems phone: (408)744-9040 www.thinkSRS.com Control type Analog, PID + Offset Input range ±10 V Common Mode ±1 V Differential Proportional gain 10-1 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 ìs (typ.) Noise (typ.) 8 nV/ãHz 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...
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