How can i select the board gain of a Lab-PC+ ?

[Juliana]

Hi,

I need to use a DAQ Board Lab-PC+ to acquire an analog signal. It varies from -1 to 1 V, and i´d like to use all the range of the AD converter. The Lab-PC+ manual indicates a software selection board gain, but i don´t know how to do it, or which function permits it. I think it is simples, but i could find this information.

Thanks,

Juliana

[Dennis_Knutson]

When you use DAQmx Create Virtual Channel, you have the maximum and minimum value inputs. These are what set the gain. The driver will set the voltage range to the best available based on your inputs.

I had to look at some of your other posts to verify that you're using LabVIEW and DAQmx. In the future, it's helpful if you can include the software you're using in your post so people don't have to guess.

[Juliana]

I can't use DAQmx because the LabPC+ are available for DAQ 6.9.3 only. I'll try to do it. thanks

[Dennis_Knutson]

Then if you use AI Config, you use the input limits control which is a cluster array.