Hello,
I have to use the PXIe4140 as SMU for my test function. I would like tu use it as an DC power to supply voltage or current depending my purpose. As I used for other power supplies in my test bench, I want to develop basic function surch
CONFIGURE_VOLTAGE_DC => set the parameter V level and Current Limit
CONFIGURE_CURRENT_DC => set the parameter I level and VOLTAGE Limit
OUTPUT_ON => Switch ON the output
OUTPUT_OFF => Switch OFF the output
MEASURE_V => get the supply voltage
MEASURE_I => get the supply current
All these function shall be called depending my sequencer. They open an instrument session, do the thing then close the session
I use the IVI DCPwr class instrument.
My problem is
I can configure the output to the desired level but as soon as I call my function MEASURExx or OUTPUTxx the output is switch OFF or the instrument is reset.
It seems that it is only working if everybody uses the same instrument session. WHY?