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The SR280 is the Boxcar Averager System mainframe. The mainframe
is NIM (Nuclear Instrumentation Module) compatible and has twelve
slots. The three right-most slots are filled by the display module
and nregulated power supplies, leaving nine slots for other NIM
modules. The DC power supply regulators are mounted on a heat sink
on the rear of the mainframe.
The display module features three types of meters. The analog meter
is for "peaking-up" an experimental signal. The digital
voltmeter provides a numeric readout. The "Digital Hold"
button may be used to hold the digital meter’s reading. A 20-segment
bar graph display may be used to show rapidly changing data.
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