Max/Min Readings Are Lower Than Expected When Using Custom Scaling

Updated Dec 5, 2018

Reported In


  • Measurement & Automation Explorer (MAX)
  • LabVIEW


  • NI-DAQmx

Issue Details

I have set up custom scaling in a DAQmx task but I am not seeing values as high or as low as I am expecting but when I look at the voltage readings everything seems fine.


Make sure that the max and min settings for the signal input range are expressed in the scaled units.

For example, if a custom scale, which converts volts to meters, is assigned to a voltage channel, the channels minimum and maximum attributes are expressed in meters.


Additional Information

After a scale is assigned to a channel, the scale applies to all attributes normally expressed in the pre-scaled units of the channel. This includes the maximum and minimum values assigned to the channel.


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