TDS3034B measure current

[jxjimmy]

I'm using laview 8 with tktds3k.llb driver to communicate with TDS3034B. I am able to get most of measurement functions, such as rise time, period, etc.

The scope's probe type is default to voltage. I was wondering how do I programmically change probe type to current?

For manual setup, you would press menu under Verical >> Probe setup (horizontal soft key) >> current (vertical soft key).

[Dennis_Knutson]

I don't see anything in the driver but looking at the manual (I don't have the actual scope), there is the command

CH<x>:YUNIT <QString>

where x is 1 to 4 and QString is either V or A. Try this command in MAX and see if it works the way you want it to. You could then modify one of the existing subVIs in the driver and add it, create a new subVI for the driver, or just use a VISA Write to send it. If you create a new subVI or modify and existing one, you'll have to be careful that if you ever upgrade the driver by downloading a new version from NI, you might loose the change you made.