Setting channel gains for E-series

[Jakke Palonen]

I have a 12-bit USB DaqPad and I'm trying to set channel gains in LabView.
Whatever values I use in input limits cluster, it doesn't make any
difference in measurement accuracy. For example when measuring strain gauge
signal, -0.1V to 0.1V range doesn't give any better results than -10V to 10V
(still same steps). I have a SC-2345 with various modules for signal
conditioning. What should I do to get suitable range for each channel?

Thanks in advance,
-- Jakke

[AllanS]

Jakke,

From what I can find when setting the gain you must also make sure that you have the correct jumper settings ont he SCXI module.

Here is a link to an alternate method for setting the gain on the channels and it discusses more the correct way to set the gain functions.

http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E55D56A4E034080020E74861&p_node=DZ52443&p_source=External

Finally I if you have not seen this already or are not doing this check this one out.

http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=B45EACE3E8A156A4E034080020E74861&p_node=DZ52300&p_source=External

Please let me know if this helps you at all. If it does not I will provide you with a better responce.

Allan S.
Applications Engi
neering
National Instruments