U2722a Keysight source measurement unit

[dk2955]

Thanks for your reply!

Just to clarify, were you able to move to higher limits, for example 1mA current limit, in LabView? Any value above 1e-6 gives me "data out of range" error even if I use the boundaries provided in the data sheet (1µA, 1mA, 10mA...).

Cheers

[santo_13]

Given you guys are cornering LabVIEW that the SMU doesn't work only in LabVIEW, were you able to get it to work in other programming languages perhaps like C, C++, C#, Python or VBA? if so, could you please share the working code?

I feel that this has nothing to do with LabVIEW as a programming language and may be a bug in the LabVIEW drivers provided by Keysight, in that case, you can develop using just the SCPI commands using VISA Read/Write (this is an excellent tutorial - https://labviewwiki.org/wiki/VIWeek_2020/Proper_way_to_communicate_over_serial) by referring to the SMU's programmer's manual.

[naif64]

Hi Thank you for your comments. For me I don't have knowledge with other programming languages, with labview i do and with the drivers that are provided by Keysight it became easy to deal with. Anyway, this is the U2772a driver that I am using with steps I follow. I am using Labview 2019.

[dk2955]

Dear naif64,

Thanks for sharing the VI. Now I understand your previous message about current limit/range.

You went around the current limit ivi bug by configuring the channel as current source during initialization, then switched it to voltage - smart!

I implemented your approach and and it seems I was able to resolve the problem as well.

Thank again for your help 

Cheers

[naif64]

Hi dk 2955

This has been done with the help of the supporting Labview staff.

regards

[NI@domito1951]

How you solved? Please send the VI.

Many people report the same problem and I do not see one solution !

[naif64]

Hi domito1951

Try this IV, this one will perform I-V characterization. 

Regards

[NI@domito1951]

I just receive your VI (many thanks for your answer and amiability) but:

- I know this VI

- do not worked and do not work now (attach the file)

- many people commented on the same problem...

The current fixed well (no error) and when fix the voltage appear error!

Withe the original NI driver fix the voltage and no current (like others aparat errors).

I do not understand why cannot fix simultaneously current and voltage.

In AMM from Agilent work both devices U2723A and U2722A.

See specifications: read by AMM

Agilent Measurement Manager
===========================
Date: Wednesday, 05 February 2025
Time:08:26:41

Model : U2723A
Serial No : MY49280027
VISA address : USB0::2391::17176::MY49280027::0::INSTR
Firmware Revision : R2.22-2.11-2.06
SCPI version : 1997.0
SoftFront Panel version : 1.3.1.0

Source Measure Unit setting
===========================
Line Frequency : 50Hz

I discussed with Agilent/Keysight and NI people - and I do not see one solution!

Mybe you can add what NI drivers you use!? I believe in drivers is a mistake.

[naif64]

Can you use this driver of U2722a Keysight source measurement unit, delete the one you have it. Next the current range and limitation should be at the same unit, i.e if you use 10 mA range your current limits should be between 1-10 mA. Its seems we cannot use current range 120 mA and the current limits at 5 mA, must be between 10 nad 120 mA. Kindly tray it and send me your feedback. For me the VI is working well.    

[DORU]

I tested and work with u2722 and u2723. But on the range 120mA maxim injected current 12mA ... why ? I do not find any answer !