Boxcar Series Gated Integrators and Boxcar Averagers

Product catalog summary

Overview
The SR200 Series Boxcar Averager System by Stanford Research Systems is a modular platform designed for acquiring and analyzing fast analog signals. It includes a NIM-compatible mainframe and various modules to customize the system according to specific needs. The system supports gate widths from 100 ps to 150 µs and repetition rates up to 50 kHz, with both analog and digital outputs.

Gated Integration and Boxcar Averaging
Gated integrators and boxcar averagers are used to recover fast, repetitive analog signals. A gated integrator amplifies and integrates signals during a specific time gate, reducing noise and interference. Boxcar averaging improves the signal-to-noise ratio by averaging the output over multiple shots.

Modules and Features

SR280 NIM Mainframe and Display Module: Houses up to nine NIM modules and includes a power supply and display for monitoring outputs.
SR250 Gated Integrator Module: Offers gate widths from 2 ns to 15 µs and supports averaging from 1 to 10,000 samples.
SR255 Fast Sampler Module: Provides gated integration with gate widths as short as 100 ps.
SR245 Computer Interface Module: Adds analog and digital data acquisition capabilities, with RS-232 and GPIB communication.
SR240A Quad 350 MHz Preamplifier Module: Amplifies low-level signals with four channels, each with a gain of 5.
SR200 Gate Scanner Module: Automates waveform recovery with selectable scan times.
SR235 Analog Processor Module: Performs signal processing functions without a computer.
SR275 Display Module: Provides display capabilities for users with an existing NIM bin and power supply.
SR272 Data Acquisition Software: Windows-compatible software for data acquisition and analysis, featuring auto-scaling and curve fitting.

Ordering Information
Prices for various modules range from $500 for the SR272 Data Acquisition Software to $2990 for the SR250 Gated Integrator and SR255 Fast Sampler.

Catalog excerpts

Boxcar Series Gated Integrators and Boxcar Averagers-1

Gated Integrators and Boxcar Averagers SR200 Series — Product overview SRS Boxcar Systems · NIM mainframe (pg. 222) · 2 ns gated integrator (pg. 223) · 100 ps fast sampler (pg. 226) · GPIB and RS-232 communication (pg. 229) · 350 MHz preamplifier (pg. 231) The SR200 Series Boxcar Averager System is a modular instrumentation platform designed to acquire and analyze fast analog signals. The system consists of a NIM compatible mainframe and modules which can be selected to tailor a system to individual requirements. The SR200 series is flexible enough to handle gate widths from 100 ps to 150 µs, repetition rates up to 50 kHz, and has both analog and digital outputs. With its low-noise inputs and low-drift outputs, the SR200 series is the standard for gated integrators and boxcar averagers. Gated Integration Gated integrators and boxcar averagers are designed to recover fast, repetitive, analog signals. In a typical application, a time “gate” of predetermined width is precisely positioned relative to an internal or external trigger to coincide with your signal. A gated integrator amplifies and integrates the signal that is present during the time the gate is open, ignoring noise and interference that may be present at other times. · Analog math processor (pg. 233) · Windows software (pg. 234) Boxcar Averaging Boxcar Averaging refers to the practice of averaging the output of the gated integrator over many shots of the experiment. Since any signal present during the gate will add linearly, while noise will add in a “random walk” fashion as the square root of the number of shots, averaging N shots will improve the signal-to-noise ratio by a factor of √N. Stanford Research Systems

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Boxcar Series Gated Integrators and Boxcar Averagers-2

Gated Integrators and Boxcar Averagers Analog and Digital Measurements SR200 Gate Scanner Module The SR200 series is designed to work without a computer, allowing you to quickly “tune-up” your experiment, or with a computer, automating complex measurement sequences. Modules like the SR235 Analog Processor perform signal processing functions (e.g., ratioing and background subtraction) without the need for a computer, while the SR245 Computer Interface gives you complete access to boxcar measurements over GPIB or RS-232. The SR200 Gate Scanner is designed to automate waveform recovery by providing...

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