TDS3034 Scope acquire voltage level problem

[CB]

Hello All,

I currently need the TDS3034 to measure the voltage only (no pulses). I have sucessfully used the Labview Instrument Driver for PWMs.  I cannot figure out how to setup the vis for a steady voltage level measure, all the exisiting code relies on triggers etc. I keep getting a "low signal level" popup. I think I should use the Software Trigger vi but dont know how to set it up alongside the other vis.

Advice Appreciated

Thanks Chris

[crossrulz]

Specifically, what measurement are you telling the scope to do?  Sound like you want "High".  Also check your measurement references.  Make sure they are set to percentages, not absolute voltages.

[CB]

Hello crossrulz,

If I put continuous 3.3 volts into the scope I need to measure the 3.3 volts, I want to use the scope as a DMM for this measurement. The problem for me is the TDS 3034 scope examples shipped with labview contain vis that set the scope up to trigger on a leading edge. They assume the incoming signal has a voltage level shift and will trigger when a state change occurs.

I need to obtain the voltage level (say Vaverage) of a continuous voltage level applied to the scope. I imagine this would involve:

scope init

auto configure

software trigger

get the values

do maths

get results

release scope resource.

I dont see how to apply the vis available to achieve this.

Regards

Chris

[crossrulz]

Just quickly thinking through it, I would just do this: