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Analog Input of USB-6008/6009 Reads 1.4V in RSE Mode when No Signal is Connected

Hardware: Multifunction DAQ (MIO)>>Portable>>USB-6008, Multifunction DAQ (MIO)>>Portable>>USB-6009

My USB-6008 or USB-6009 is reading around 1.4V in referenced single-ended (RSE) mode when no signal is connected. Is this expected?

Yes, when there is no signal connected to the analog input of the USB-6008 or USB-6009, a reading of around 1.4V in RSE mode is expected. This is due to the internal resistor network.

Please see the link below for more information on the analog input circuitry of the USB-6008 and 6009.

Related Links:
KnowledgeBase 3QQBGL0Q: Explanation of the Analog Input Circuitry on the 6008/6009
Product Manuals: NI USB-6008/6009 User Guide


Report Date: 05/31/2005
Last Updated: 03/15/2017
Document ID: 3LUM2RNK

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