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321930C-01
©
Copyright 1998, 2000 National Instruments Corp. All rights reserved.
October 2000
INSTALLATION GUIDE
SCXI -1327 H
IGH
-V
OLTAGE
A
TTENUATOR
T
ERMINAL
B
LOCK
This guide describes how to install and use the SCXI-1327 high-voltage
attenuator terminal block with the SCXI-1120, SCXI-1120D, SCXI-1121,
SCXI-1125, and SCXI-1126 modules.
Introduction
The SCXI-1327 high-voltage attenuator terminal block is shielded and has
screw terminals that connect to the SCXI-1120, SCXI-1120D, SCXI-1121,
SCXI-1125, or SCXI-1126 input connector. Each SCXI-1327 channel has
a precision 100:1 resistive voltage divider that you can use to measure
voltages of up to 300 V
rms
or ±300 VDC with the SCXI-1120,
SCXI-1120D, SCXI-1121, SCXI-1125, or SCXI-1126. You can
individually bypass these dividers for low-voltage measurement
applications.
The terminal block has 18 screw terminals for easy signal connection.
One pair of screw terminals connects to the SCXI-1120, SCXI-1120D,
SCXI-1121, SCXI-1125, or SCXI-1126 chassis ground. When used with
the SCXI-1120, SCXI-1120D, SCXI-1125, or SCXI-1126, the remaining
eight pairs of screw terminals connect signals to the eight module inputs.
When used with the SCXI-1121, four pairs of SCXI-1327 screw terminals
connect signals to four module inputs and the remaining four pairs of
SCXI-1327 screw terminals connect signals to four module excitation
outputs.
Note
For correct operation with the SCXI-1121 module, you must bypass the attenuators
on the excitation channels.
™
Summary of Contents for SCXI-1327
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