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 1000means 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.