PXIe-4353 Input Range

[leeaspitarte]

Hi, I am creating a task with a PXIe-4353 and trying to understand the function of the maximum and minimum numbers for the signal input range. I understand from this page the role of changing the input range to reduce digitization noise but also that PXI cards usually only have a few select sensitivities, and when one sets the max and min range when creating a daqmx task, the PXI card will choose the smallest range that is compatible with these max and minimum values.

For other PXI cards I have (6233, 6238)  it is clear from the specifications documents what these set sensitivities are. However, it's less clear what is going on in the case of the PXIe-4353. It looks like there isn't a set of hardware ADC sensitivites and therefore the 24bits of the input range are always corresponding +- 80mV as states in page 1 of the specifications document.

So essentially my question is: What do the maximum and minimum values actually do when creating a task with the PXIe-4353?

[santo_13]

Since 4353 is a Temperature card which can interface only with Thermocouples, there is no need to have a Variable Gain stage. There would be fixed gain and fixed range. When creating a DAQmx Task, I believe you are using AI Voltage>Temperature and in this case, the maximum and minimum would signify the temperatures that you intend to measure as per the help file.