The SR250 Gated Integrator is a versatile, high-speed, NIM module designed to recover fast analog signals from noisy backgrounds. The SR250 consists of a gate generator, a fast gated integrator, and exponential averaging circuitry. The gate generator, triggered internally or externally, provides an adjustable delay from a few nanoseconds to 100 ms before it generates a continuously adjustable gate with a width between 2 ns and 15 µs.