Why Am I Getting # inf or # j When Running A Shunt Calibration With My SCXI 1520 Module?Hardware: SCXI>>Modules>>SCXI-1520, SCXI>>Terminal Blocks>>SCXI-1314
Problem: I have a SCXI 1520 strain module with a 1314 terminal block. I am certain that my strain gauge is wired in correctly but I receive a # inf or # j error when running a shunt calibration. My strain gauge is a quarter bridge I bridge type. Solution: There are a couple of things that cause these errors: 1. The “QTR” resistor in the SCXI 1314 terminal block should match the nominal resistance of the strain gauge. The 1314 terminal block comes from the factory with the 350 ohm resistor installed. 2. If you are using NI-DAQ 7.1 there could be a problem with the simulated strain value. Please reference KnowledgeBase (KB) 339CBDQF. A link to this KB is found below. 3. The strain gauge could be damaged. Try a different strain gauge. 4. The channel on the SCXI 1314 terminal block could be damaged. Try a different channel. If the channel is found to be damaged contact National Instruments technical support for repairs. Related Links: Knowledge Base 339CBDQF: Shunt Calibration on Strain Virtual Channel Returns Software Gain of -1 Attachments:
Report Date: 05/18/2004 Last Updated: 05/28/2004 Document ID: 39H8P8QT |
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