Amplitude Swept Two channel reading

[tanju]

Hi,

I am currently trying to include another channel for reading in data using the amplitudeswept and swept sine.vi as I have multiple readings to take for testing.

I am currently using a NI USB 6259 device controlling an electrodynamic shaker however I am having no luck the extra reading- simply reads in all 0 values no noise either- but no error is generated

I have attached my VI for your review

Your help is most appreciated Regards Tanju

[GerdW · Accepted solution]

Hi Tanju,

sorry, but you're using a lot of VIs from Sound&Vibration toolkit, so can't comment on them…

But:  Where in your VI do you try to read more than one input channel?

For the SV-functions you only use "ao1" as input channel, which doesn't sound right to me.

And for the DAQmx functions in the lower part you have not set any channel at all (in "physical channels") - and you explicitely read "1 channel 1 sample" with DAQmxRead!

So please explain, where you want to read more than one input channel!

[tanju]

Hi GerdW,

thank you for the reply, Really I'm not changing the running VI's just the main vi in amplitude swept I am just enetering my channel hopiong to read the data- I have attached an image of the main vi; I think the main problem is the program already calls the DAQ board and I can't do this twice.

I just want to add an additional channel into the program as I will read a force sensor and a displacmement sensor (input channels) and my output channel is my electrodynamic shaker.

Your help is most appreciated

Regards Tanju