Feedback, Constant current mode, LABVIEW

[gennady cherkashinin]

Hello all,

I have the programm on LabView 7.1 which manage the SR830 lock-in amplifier
to measure the photocurrent vs bias voltage.  
 
But for my application I need to modify the program which operates in
constant current mode, i.e. the photocurrent to be constant by adjusting bias
voltage during the measurements.   

Does anyone have such program on LABVIEW or know an algorithm to realize
this program?

Any help would be greatly appreciated. Thanks in advance for your help.

Gennady

[Arsala]

Hello Geenady,
could you solve your issue. Please send your VI that I could check it.
What exactly do you want to measure?
Could you discribe your situation al little bit more.

regards
Arsala