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SR430  5 ns multichannel scaler/averager
SR430 Multichannel Scaler/Averager · 5 ns to 10 ms bin width · Count rates up to 100 MHz · 1k to 32k bins per record · Built-in discriminator · No interchannel dead time · On-screen data analysis · Hardcopy output to printers/plotters · DOS compatible 3.5" drive · GPIB and RS-232 interfaces · SR430 ... $7950
The SR430 is the first multichannel scaler which combinesamplifiers, discriminators, bin
professional clocks, and data analysis in a
single, integrated instrument. With its many features and its
easy-to-use menu driven interface, the SR430 simplifies time-
resolved photon counting experiments.The SR430 Multichannel Scaler/Averager can be thought ofas a photon counter that counts events as a function of time. Atrigger starts the counter which segments photon count datainto sequential time bins (up to 32k bins). The width of the
bins can be set from 5 ns to 10 ms. The instrument records the
number of photons that arrive in each bin. The SR430 is useful in a variety of applications where it isnecessary to count events as a function of time: LIDAR, time
of flight mass spectroscopy, and fluorescence decay
measurements are just a few examples. − 0.7 V, active low) signal corresponding to each count. Input and Discriminator The SR430’s analog input has a 50 Ω input impedance and aninput range of ±300 mV. The maximum input sensitivity is
10 mV, and if your input signal level is less than this, a
preamplifier (like the SR445A) is recommended. The input is
followed by a discriminator with a selectable slope and a
threshold adjustable between ±300 mV. Adiscriminator BNC
output is provided at the front panel that generates a NIM level
(0 to
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