Ty McKinney

The only option if you want to use autozero sometimes, but not all of the time during one 500s interval is to swap between config lists as you had mentioned before - I agree with Andrea that every 2s could possibly be too often and will lead to extra time being added.

Swapping config lists seems to work - we set up a trigger model that recalls a config list with azero ON, take 10 readings, switches to azero OFF, takes another 10 readings, and repeats. The resulting data shows that when azero is ON the readings take longer than when azero is OFF. You also would have to consider the time it takes to swap between the config lists. When the swap between azero OFF and ON is performed, the instrument will refresh its reference measurement each time.
Overall consider if the timing delay incurred by the settings swap via various config lists is worth the time saved by not using a zero all of the time.

To take proper 4-Wire resistance measurements with your scan card, the channels must be paired. For example, on a 20-channel card, channels 1-10 can be used as a system channel and 11-20 can be used as the paired channels. CH 1 and 11 will be paired together, 2 and 12, 3 and 13, and so on. See the attached reference manual pages 2-7 through 2-9 and that should supply more in-depth information as well as a schematic of what that configuration would look like.
https://download.tek.com/manual/2701-900-01G_Feb_2016.pdf Model 2701 Ethernet-Based DMM / Data Acquisition System User's Manual

Currently using a Keithley 2701 to read 4-wire resistance in channels 101:105, 2-wire resistance in channels 106:110 and 116:120. In my VI, when passing this list of channels, the VI (Virtual Interface) throws an error. However, when I only use 106:110, 116:120, it works. How do I include the 4-wire measurements in the channel list?

I'll attach a snippet from the 2182A data sheet and post the link to download the datasheet as well as the reference manual below.
The reference manual will have all of the SCPI and operational information you would need for your application.

Datasheet:
https://www.tek.com/en/datasheet/nanovoltmeter-model-2182a

Reference Manual:
Models 2182A Nanovoltmeter User‚s Manual | Tektronix
See section 13 for SCPI command reference. Also, to manipulate speed I would alter your NPLC, delays, filters, etc. to fit your specific needs.

You can definitely control the measurement rate while scanning, you will just have to account for scan rate.

Were those cards that you swapped out working in another mainframe? The current paths are through the cards, not really through the mainframe, so if anything is up, I would assume it would be on the cards. You can check for offset current – close the switch and leave the connections to the DUT open and see if the current in the system is really high. Repeat without the switching system connected. If the offset current with the cards is much higher than without (supposed to be < 1pA offset current added for the card), then it’s probably something wrong with the card. It could be a lifespan issue. The relays have a limited contact life, I believe their resistance increases as they age so that will increase noise. You could try measuring the relay contact potential as well.
For future reference to this thread, the 7002 is a retired product and will be moved to the " Vintage and Retired Models" category.
 

The model 2604B/2614B/2634B are lower cost in the 26xx Keithley family and are without some features to their other relatives. Unfortunately, we don’t have any physical port externally to make a trigger. Software can be used with the edition of another instrument to send a trigger. I would take a look at KickStart if you are using other Keithley/Tektronix instruments for that trigger. Otherwise, you would need to make this custom.

Unfortunately, you cannot change the default path to save projects every time. This requires a manual selection as you have been doing.
However, there is a sort of work around. First, create a folder in the desired path (such as on the desktop, in a certain folder, etc.) and save that Kickstart project there.
Then close KickStart, go to the path and open your project directly from the folder you saved it in. This should open KickStart automatically with your project loaded on screen. Run a test or gather data, save, and export. Check the export and it should be in this folder along the path you desired.

How do I save the path I'd like records to be saved in? We currently have to always go in and change it.

To find information such as the pinout for the analog backplane connector on the Keithley Model 3706A System Switching/Multimeter, see page 3-29 in the 3706A reference manual found at the attached link below, and see attached picture to this post.
Series 3700A System Switch/Multimeter Reference Manual | Tektronix