Instrument Control (GPIB, Serial, VISA, IVI)

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4156c: labview generates error after configuring smu3 or smu4

Hello,

 

I'm trying to measure and plot drain curves for a JFET.  When trying to run it in labview I get the following error message:

 

Error -1074000000

Instrument reports:

+181,"Illegal setup. Invalid command."

+0,"No error"

 

I see other people have had this problem, I've reviewed all the previous posts and tried implementing the proposed solutions, to no avail.

 

Here's my configuration for when trying to run a sweep with Vgs = 0V:

 

Unit          Vname          Iname                MODE                       FCTN

 

SMU1      Vdd               Id                       V                               VAR1                              (drain)

SMU2      Vg                 Ig                       COMMON                 CONST                          (gate)

SMU3      Vs                 Is                       COMMON                 CONST                           (source)

 

 

I ran NIspy and it told me that the error message is generated after the channels are assigned immediately after configuring SMU3 or SMU4 (SMU3 & SMU4 will both trigger it).  If I try to disable SMU3 and configure SMU4 then SMU3 will show that it's disabled on the front panel and SMU4 will be configured and I get the error.  After I get the error message, If I go to the front panel I can manually run my sweep using the configurations labview sent to the instrument.

 

I've tried configuring/disabling all unused channels and that didn't help.  I've also tried leaving the series resistance setting for each SMU as the default and assigning 0V to them, which didn't help either. 

 

Any help or feedback would be greatly appreciated.

 

 

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Hello ClintN,

 

Could you please post your code or a screenshot?

 

Regards,

 

Jeff L.

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Hello Jeff,

 

I actually managed to solve my problem last night, it was the series resistance command for the configure channel sub-VI.  Someone had suggested a solution in another post, I just didn't apply it properly.

 

Thanks anyway,

 

Clint

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