Regarding DAQmx

[JayRam]

hi,

  can anyone answer me these ques...

1.which DAQ board will allow for the detection of a 2.6mv change in a signal if a 0-10v range is selected..

12bit board

16 bit board

both

none

2.where is the best place to adjust the gain for a DAQ channel?

MAX(Measurement and automation explorer)

gain terminal of DAQ assistant

the set gain vi in DAQmx pallete

the input specifications when setting up DAQ assistant

Regards

Jay

[Norbert_B]

Ray,

1. Technically, you have 2^<Bit of ADC> steps available for your range. This is true if the expected range is physically possible. Not all ADC can use unipolar ranges as well as "non-symmetric" ones (with 0 being the line of symmetry).

The resolution of the ADC is range/steps.

Therefor in you example, if the device support unipolar ranges, 12 bit should be sufficient (resolution is 10/4096 = 0.00244).

2. If the question is regarding DAQmx, it is not possible to set the gain. The gain is computed for the user in regard to his input settings.

hope this helps,

Norbert