programming NI 4461 output attenuation

[nelle178]

According to the NI 4461 manual, "Software-programmable attenuation of 0, 20, or 40 dB is available on the output channels." and also: "You can set attenuation directly in software by assigning a negative value to the AI.Gain property."

I am quite new to LabView, so haven't managed to figure out so far how to attenuate the signal. Would anyone have some quick instructions?

Cheers!

Lena

[Carmen_Martinez]

Hello Lena,

You can use the DAQmx functions installed with the DAQmx driver. First of all you have to create the Analog Input task (by using the function DAQmx create virtual channel.vi) and then you can set the gain by using a property node (that you can find in the same palette). Then you connect those two functions and you can navigate through the differents properties that you can modify regarding this analog input.

I attached a picture to show where you can fin the parameter to set the Gain.

Cheers!