Generate Square Waves to SCXI 1161 Module

[smoothdurban]

Hello,

I am a new user to Signal Express and I wanted to use signal express to generate two Square waves which I will ouput to my SCXI 1161 Relays

Any quick ideas would be appriciated.

[timtamslam]

Hey there smoothdurban,

Typically when you want to generate an output signal in SignalExpress you have to first create the analog/digital signal and then generate it. How this is done in SignalExpress is by first adding a step for "Create Analog/Digital Signal" and then adding a step for "Generate Signals". 

I attached some pictures to help simulate this. The first picture "creategenerateunbound" shows how an unconfigured generate step does not link with the create signal. The second image "creategeneratebound" shows that after you specify the channel for the generate task, the create and generate will wrap up together and the square wave will match with the channel.

Also, here is some additional information on why you have to first create and then generate and the SignalExpress Help file about creating signals,

http://digital.ni.com/public.nsf/allkb/94AC3A0662C8388586256F4700721739

http://zone.ni.com/reference/en-XX/help/371268J-01/expresswb/create_signal/

Hope this helps!