Keithley SMU 2600 series - Live view of data while sweeping.

[keithley2400fan]

Hello everyone,

I am working on code to automate I/V sweeps using Keithley SMUs (2600 series). 

I am using the official project based drivers from NI. The code is functional, but the X-Y graph only displays a portion of the data-it seems to reset with for loop iteration. I suspect that his has to do with the way that I connected the shift registers. Is there a way to wire the shift register in parallel to the outer for loop so that the X-Y graph retains all the data ?

Apologies for the state of the code and thanks in advance. 

[GerdW]

Hi 2400fan,

---

@keithley2400fan wrote:

The code is functional, but the X-Y graph only displays a portion of the data-it seems to reset with for loop iteration.

Apologies for the state of the code and thanks in advance. 

---

There are two XYGraphs and one waveform chart: which one are you talking about? None of them is labelled "X-Y graph"…

Yes, that code requires apologies for its state way too many locals, way too many sequence frames!

---

@keithley2400fan wrote:

I suspect that his has to do with the way that I connected the shift registers. Is there a way to wire the shift register in parallel to the outer for loop so that the X-Y graph retains all the data ?

---

You are right!

There are shift registers at the inner FOR loop - and they got initialized for each iteration of the outer loop. Do you want/need to initialize them for each iteration???

[keithley2400fan]

Thank you, I was able to fix the code shortly before you replied. I had connected the shift registers to the outer loop but I guess I must have connected them wrong the last time I tried that. I think it's fixed now.