Labview Error when using Keysight N6705C

[spforster]

Hello,

While using the Keysight N6705C I'm getting an error when trying to read back the voltage or power through Labview when passing through the command line :FETC:ARR:POW? (@1) or :FETC:ARR:VOLT? (@1).  It works fine if I want current and pass the command :FETC:ARR:CURR? (@1).  The error I'm getting is:

Error -1074001424 occurred at an unidentified location

Possible reason(s):
agn6700 Error Query;
instrument reports:
+303,"There is not a valid acquisition to fetch from"

Any help on this matter would be much appreciated. 

Simon

[spforster]

I'm using a N6781A module in the N6705C chassis. 

[santo_13]

Based on the error, I suspect you can measure voltage or current at a time. Perhaps by default, it measures current, which is why there is no error. When you request a voltage reading, it complains that you have not configured it to measure voltage.

Please check the programmer's manual.

[spforster]

Hi Santhosh,

Thanks for coming back to me.  I've had another look through the manual and I can't see anything else that I need to do to the SMU in order to read Voltage or Power (see snippet below on Fetch Array Command). In order to read a measurement from the device I am using the Agilent N6700 Series Fetch Array VI, which has the commands built into it.  Also I've tried a separate module (N6762A) within the N6705C and I can get it to measure all three (current, voltage and power).

Is there something else I need to do to the N6781A in order to measure the Voltage and Power?

Thanks,

Simon