National Instruments SCXI-1303 Installation Manual

Also see for SCXI-1303: Operation and calibration manual

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National Instruments SCXI-1303 Installation Manual Manual pdf 1 page image

CVI ™,LabVIEW ™,NI-DAQ ™, andSCXI ™are trademarks of National Instruments Corporation. Product and company names are trademarks ortrade names of their respective companies.321923A-01 ©Copyright 1998 National Instruments Corp. All rights reserved.August 1998INSTALLATION GUIDESCXI-1303 32-CHANNEL ISOTHERMALTERMINAL BLOCKThis guide describes how to install and use the SCXI-1303 terminal blockwith SCXI-1102,SCXI-1102B, SCXI-1102C, and SCXI-1100 modules.IntroductionThe SCXI-1303 32-channel isothermal terminal block is a shielded boardwith screw terminals that connect to the SCXI-1102/B/C and theSCXI-1100 modules. The SCXI-1303 has a high-accuracy thermistor,cold-junction temperature sensor, and an isothermal copper plane tominimize the temperature gradients across the screw terminals when youmeasure with thermocouples.The terminal block has 78 screw terminals for easy connection. Thirty-twopairs of screw terminals connect to the 32 differential inputs of the SCXImodules. One pair of terminals connects to the module’s chassis groundpins. Three terminals connect to the SCXI module OUTPUT and AOREFpins and to the SCXIbus guard. All of the other terminals—OUT0+,OUT0–, OUT1+, OUT1–, OUT2+, OUT2–, OUT3+, OUT3–, andAIREF—are reserved for future use.The terminal block has a pullup resistor connected between CH+ and +5 Vand a bias resistor connected between CH– and chassis ground. Theseresistors help you detect open thermocouples by detecting saturation of themodule amplifier output.What You Need to Get StartedTo set up and use your SCXI-1303, you will need the following items:q SCXI-1303 32-channel isothermal terminal blockq SCXI-1303 32-Channel Isothermal Terminal Block Installation Guide