Programmable Input Ranges

[Biomedical Signal Processing]

Can I change AI input range other than standerd range of DAQ board? Can I choose non standerd GAIN value for DAQ Card?

Thanks,

Kishor

[RIO-Todd]

Kishor,

Yes, you can change the input range of an analog input to be something other than the default +/- 10 V range. Within LabVIEW, you can use the AI Config VI and alter the limits to improve the resolution (increase the gain) of your DAQ device. Using the AI Config VI, NI-DAQ will choose the best gain for whatever input range you select.

Using NI-DAQ function calls, the AI_Setup function can be used to set the gain of the DAQ device and changing the gain of the device will change the input range accordingly. Refer to the user manual of the device for allowable ranges/gains. I hope this helps.

Regards,

Todd D.
Applications Engineer
National Instruments

[Biomedical Signal Processing]

Hi Todd,

I have DAQCard6024E card, I can program only four GAIN settings now, can I set any GAIN value between UPPER and LOWER GAIN limits as per specifications? i.e: Can I set GAIN = 25 or 45 or 76 ?

Thanks,

Kishor