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multiple 2614B common ground

Posted: October 11th, 2017, 10:34 am
by hmueller23
I am using first time two 2614B Keithely with 4 source-measure-units for solution gate FET characterization with reference electrode transfer and output. I am not sure that I did right connection of the four channels to the common ground. I am using the Force LO terminal of all SMU's, connect them together and also to the green banana connectors at the rear of the two instruments. However in the manual I found you should connect the sense LO together. I'm not sure what is correct.
Second if I connect the Force HI to the ground only current is not flowing. Can you please tell me where is the problem?
Thank you!

Re: multiple 2614B common ground

Posted: October 13th, 2017, 5:14 am
by Andrea C
The Sense LO (and Sense HI) are used only if the SMU are configured for 4-wire remote sensing.

For your second question, what are the SMU settings? Forcing what? What compliance limit? Try using some resistance between HI and LO rather than shorting it.