Tektronix Technical Forums are maintained by community involvement. Feel free to post questions or respond to questions by other members. Should you require a time-sensitive answer, please contact your local Tektronix support center here.
Models 2601A, 2602A, 2611A, 2612A, 2635A, 2636A
Models 2601B, 2602B, 2604B, 2611B, 2612B, 2614B, 2634B, 2635B, 2636B
I believed you also sent a similar concern regarding your compliance measurement. I believed it is a simalar issue with what I replied to you.
I think that the issue is more of a set-up issue than the measurement itself. Since you have a 2636A, you can actually use the TSP Express to do your specific measurement and settings. Another aspect of the TSP Express is that it can generate the code for you as well. Use this as your debugging tool to make sure that you achieved your measurement needs. Also make sure that you are actually connected properly (HI = RED on the triax alligator, LO = RED on the triax alligator).
See link below;
http://www.keithley.com/products/dcac/c ... B/tsp.html
No I do not think it is a setup issue. If I just tun on the 2636A with nothing connected to the terminals, ask it to source a voltage and measure current, there will be a voltage difference between the SENSE HI and SENSE LO contacts.
We use LabVIEW because we need to control multiple instruments from different manufacturers at the same time.
- Keithley Applications
- Posts: 1468
- Joined: October 15th, 2010, 10:35 am
- Country: United States
It's not abnormal for there to be some voltage potential on the sense lines even when operating the instrument in 2-wire mode.
There are internal circuit elements, particularly for the contact check feature, that connect the HI to Sense HI and the LO to Sense LO. See figure 4-11 in the 2600AS-901-01 Reference Manual.
When using the instrument in 4-wire mode, additional internal relays would be closed and the sense lines would be directly connected to the voltmeter.
But in 2-wire mode, it is not expected that any connection is made to the sense lines.
Can you elaborate on why this poses a problem or was it was just an observation that you wanted to clarify?
Thanks for the clarification. This is a problem for me because I switch between 2-probe and 4-probe measurements and I used to leave the sense wires connected to the device even while I was doing 2-probe measurements. Is there any way around this other than disconnecting the wires or making my own switches?
Who is online
Users browsing this forum: No registered users and 2 guests