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RE: Keithley 7002 switching mainframe with excess noise current
Since you have a number of new changes in behavior, I wonder if one of the power supplies in the 7002 is having some trouble.
The instruction manual on Tek.com for the 7002 has a section on maintenance and running diagnostics.
On the DB9 connector for the digital IO, a 5V supply is available (pin 2). Look at that on a scope. Is it steady DC average value?
Our service dept will perform functional check and repair of 7002 still.
https://www.tek.com/en/service-quote -
RE: 2614b model external output trigger
Just expanding on the information provided.
Given that a Keithley SMU is likely to see a few decades of use for perhaps a lot of different tasks, the absence of digital IO for triggering with external equipment is one likely way you will wish you had the 2612B instead of 2614B.
However, there is still the ability to coordinate the SMU action with bus trigger or sending *TRG command to it after arming it for a task.
In the attached PDF, I provide a little more detail on it.
You’re offline. This is a read only version of the page.
