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NATIONAL
INSTRUMENTS
The Software is the Instrument
This guide describes how to use and install the SCXI-1322 terminal block with the SCXI-1122
module. In addition to the SCXI-1322 kit contents, you will need an SCXI chassis, an SCXI-1122
module, Phillips-head number 1 and number 2 screwdrivers, a
nose pliers, a wire cutter, and a wire insulation stripper.
Introduction
The SCXI-1322 terminal block consists of a shielded board with 48 screw terminals for easy
connection to the SCXI-1122 input connector. Sixteen pairs of screw terminals connect to the
SCXI-1122 module inputs. The remaining seven pairs of screw terminals are for the module
excitation channels.
What Your Kit Should Contain
The SCXI-1322 terminal block kit (part number 776573-22) contains the following components:
SCXI-1322 terminal block
SCXI-1322 Terminal Block Installation Guide
If your kit is missing any of the components, contact National Instruments.
Signal Connection
The following warnings contain important safety information concerning hazardous voltages and
terminal blocks.
Warnings:
S
HOCK HAZARD
of the dangers involved. Disconnect all power before removing the cover.
!
Always install the grounding screw. If signal wires are connected to the module
or terminal block, dangerous voltages may exist even when the equipment is
turned off. Before you remove any installed terminal block, disconnect the AC
power line or any high voltage sources ( ≥ 42 Vrms or 60 VDC) that may be
connected to the terminal block.
_____________________________
®
LabVIEW
is a trademark of National Instruments Corporation. Product and company names are trademarks or trade
names of their respective companies.
© 1993 National Instruments Corporation. All rights reserved.
®
®
Kit Component
: This unit should only be opened by qualified personnel aware
SCXI-1322
Terminal Block
Installation Guide
Part Number 320711-01
1
/
in. flathead screwdriver, long-
8
Part Number
182378-01
320711-01
November 1993
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Related Manuals for National Instruments SCXI-1322
Summary of Contents for National Instruments SCXI-1322
- Page 1 This guide describes how to use and install the SCXI-1322 terminal block with the SCXI-1122 module. In addition to the SCXI-1322 kit contents, you will need an SCXI chassis, an SCXI-1122 module, Phillips-head number 1 and number 2 screwdrivers, a in.
- Page 2 Connections, including power signals to ground and vice versa, that exceed any of the maximum signal ratings on the SCXI-1322 can damage any or all of the boards connected to the SCXI chassis, the host computer, and the SCXI-1322 terminal block.
- Page 3 Figure 2 shows a setup where remote sensing is not used. In this case, use a different pair of excitation leads for each load. To minimize the voltage drop in each pair of excitation leads, use large gauge wires to reduce the I * R drop. LEAD © National Instruments Corporation SCXI-1322 Terminal Block Installation Guide...
- Page 4 120 Ω SENSE + 120 Ω SENSE – 120 Ω 120 Ω 120 Ω CH+(10) CH+(6) CH+(3) 120 Ω 120 Ω 120 Ω Figure 3. Multiple Loads with Bad Remote Sensing SCXI-1322 Terminal Block Installation Guide © National Instruments Corporation...
- Page 5 Figure 4 shows the SCXI-1322 terminal block parts locator diagram. Art not available in PDF version of document. Figure 4. SCXI-1322 Parts Locator Diagram © National Instruments Corporation SCXI-1322 Terminal Block Installation Guide...
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Page 6: Installation
Temperature Sensor Output and Accuracy The SCXI-1322 temperature sensor outputs 1.91 to 0.58 V from 0° to 55° C and has an accuracy of ±0.65° C over the 15° to 35° C range and ±0.85° C over the 0° to 15° and 35° to 55° C ranges Note: If you are using National Instruments software such as LabVIEW or LabWindows, you do not need to read this section. -
Page 7: Specifications
Terminal to terminal 250 Vrms Temperature Sensor Circuit Diagram The circuit diagram in Figure 5 is optional information that you can use if you want more details about the SCXI-1322 temperature sensor. +5 V 4.7 kΩ 2.5 V 5 kΩ...