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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 stabalization, 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 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 × 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
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 µs (typ.)
Noise (typ) 8 nV/√Hz above 10 Hz (ref. to
Parameter control Digital
Parameter accuracy 1 %
Stability 200 ppm/°C
External Front BNC input
Internal ±10 V range with 1 mV resolution
Internal 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 adjustable upper/lower
Display resolution 4 digits
Units s-1, s, V, V/s
Operating temp. 0 °C to 40 °C, non-condensing
Interface Serial via SIM interface
Connectors BNC (3 front, 2 rear)
DB15 (male) SIM interface
Power Power supplied by the SIM900
Mainframe, or optionally by a
user-supplied DC power supply
(±15 V and +5 V)
Dimensions 3.0" × 3.6" × 7.0" (WHL)
Weight 2.1 lbs.
Warranty One year parts and labor on defects
in materials and workmanship