Keithley 2636A Labview FET Sweep

[pal181]

Hi Guys,

I am trying to write a labview program to interface with my 2636A meter via ethernet. This is a 2 channel meter, and my plan is to sweep one channel from 0 to 5 volts and measure the voltage it is sourcing, while the other channel is swept from 100mV to 100mV (so no change in voltaage) and measure the current coming through. I used the Keithley example with the the driver to make the program. The issue I am having is with the sync between Channel A and CHannel B, it seems one channel is running faster than the other even though there is no delay (in theory). I am new to labview but ahve some basic understanding of programming any help/input will be appreciated.

Regards,

PD

[Joel-I]

Hi pal181,

In order to synchronize Channel A and B, you need to share a clock and a trigger.  This should minimize any delay you see.

Regards,

[pal181]

Hi Joel,

In my current code how wud i approach to doing this ?

[Joel-I]

I'm not too familiar with the VIs used in this driver, but there should be a way to share a clock/timer between the channels.  Take a look at the Advanced Sweep Example and see if you can gather anything more from how the manufacturer uses triggers.

If you don't see a way to do this, you may just want to add a delay to the channel that is going first.  From what I can see, you may be able to use the Config Measure Settings VI to do this

Regards,