simple question on DAQ

[aspoo]

I'm new to working with DAQ boards, and I want to know how I may connect a power supply to the analog input in order to test how it works. What must I connect, just the ACH1, or also a ground signal (which one, I'm using a PCI-6032E and there are 8 AIGNDs), any other signals (+5V,...?)
Thanks.

[Dennis_Knutson]

The user manual has a section called Signal Connections that you should refer to but if you configure the DAQ card for single ended ground referenced, just connect the power supply + output to ACH1 and the - output to one of the AIGNDS.

[Filipe A.]

Hello;

The best way to test a AI channel is by using it as differential input mode. When using a channel as differential mode, you will need to connect the + wire of your signal to the channel number you want (in your case, channel 1) and the - wire to channel x+8 (in your case, channel 9).
You will divide the channel counts by 2, but you will have better results as far as commom rejection mode, and ground loops.
Hope this helps.
Filipe