Hi,
I'd like to apply a fixed constant voltage using a Keithley 2410 and read out the current with respect to time using Matlab and SCPI commands via a USB/RS232 connector. I am using MaxOS, Matlab 2014a, and SCPI commands, e.g. working IV program attached.
I am having the following problems:
How to get data out the buffer quickly and repeat. Is there any way to keep transfering data continuously?
I have had limited success controlling the keithley for IV sweeps, and have even used a crude loop to repeat a single point IV sweep and log the data, however this approach is very slow and does not apply the voltage continuously between measurements.
In general I am a bit confused about trigger / buffer / srq communication so if anyone has an idiot guide to that that would be great.
Thanks in advance!
ps if you see any problems with my existing code please advise!
Hello Mr Edgington:
I am in agree with Mr Gehringer, you are performing initialization and reset every cycle of the loop but this should not be the problem due to loop is performed just one time.
I worked some time ago in the same SMU like yours. It was very difficult to get working the Sweep Function with SCPI commands due to specific instrunctions steps have to be performed. After some time working on, I used also punctual bias and measurements like you but it was not so good because there is no possibility of continuous communication with SMU and the operations became to be slow by time operation of the application and communication as well.
Finally, I preffered to use the library for NI Software that you can find free on internet. With this solution I could configure to read voltage, current and time stamp in order to make C-V measurements and others.
I hope you can resolve your problem....
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