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January 2003
321924C-01
SCXI -1321 O
FFSET
-N
ULL
AND
S
HUNT
-C
ALIBRATION
H
IGH
-V
OLTAGE
T
ERMINAL
B
LOCK
I
NSTALLATION
G
UIDE
This guide describes how to install and use the SCXI-1321 offset-null
and shunt-calibration terminal block with the SCXI-1121 module. You can
only use the SCXI-1321 terminal block with SCXI-1121 revision C or later
modules. In addition to the 18 screw terminals, the SCXI-1321 has circuitry
for offset-null adjustment of Wheatstone bridges, and a socketed shunt
resistor for strain-gauge shunt calibration. This terminal block was
primarily designed for Wheatstone bridge transducers such as strain
gauges, although it can easily accommodate thermocouples, RTDs,
thermistors, millivolt sources, volt sources, and current-loop receivers.
Thermocouples have cold-junction compensation (CJC) support.
Conventions
The following conventions are used in this guide:
»
The
»
symbol leads you through nested menu items and dialog box options
to a final action. The sequence
File»Page Setup»Options
directs you to
pull down the
File
menu, select the
Page Setup
item, and select
Options
from the last dialog box.
This icon denotes a note, which alerts you to important information.
This icon denotes a caution, which advises you of precautions to take to
avoid injury, data loss, or a system crash.
When this symbol is marked on
the product, refer to the
Read Me First: Safety and Radio-Frequency
Interference
document, shipped with the product, for precautions to take.
bold
Bold text denotes items that you must select or click in the software, such
as menu items and dialog box options. Bold text also denotes parameter
names.
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