Andrea C

An update:  with version 1.13 of Clarius software for the 4200A-SCS, there are now KXCI commands for error retrieval and error clear.

Visit tek.com and download and apply updated Clarius for 4200A-SCS.

:ERROR:LAST:CLEAR

:ERROR:LAST:GET

The printbuffer() can take multiple buffer elements:
printbuffer(index1, index2, defbuffer1.readings, defbuffer1.relativetimestamps)

This well result in comma delimited reading, time, reading, time, etc according to the index values.
The receiving code will need to parse it.

If the ohms of the sample are very large, the RC time constants can be surprisingly long.  Minutes or hours is not out of question.

In these cases, it might be sufficient to define a procedure where you take the measurement after XX time of electrification.  Such a consistent method would allow comparison of sample A to sample B, etc.

Unrelated:  you may want to consider some shielding for the setup.  With connections in open air, results are susceptible to EMI and charged particles from air.  Simply walking past the setup can be reflected on the picoammeter.

Low level measurements handbook

In the *idn? response, after the serial number is what we want.
Your unit has C01 firmware.  You are at the latest for your unit.
Only units using a Bxx level are compatible with the B04 version from Tek.com.

Check out the sample posted on our github for the DMM7510.
The code for control of digitizer will be essentially same for DMM7510 and DMM6500.
Sample Code - look at DigitizeV samples

Just the spec of the A/D on the DMM7510 is better:
18-bit vs. 16-bit
hardware comparator-based triggers vs. firmware detect
able to AC couple to the signal

Hello,
TSP Express has been retired and is no longer present in the current firmware release for the 2600B series.
If your present firmware is version 3.x.x something, I'd advise you to install new firmware.  Version 3.4.2 is most current for units presently at any other 3.x level.
Firmware for 2600B Series

The older apps were built on java (Sun/Oracle) and very difficult to make work with any modern browser.

The latest firmware does still offer virtual front panel application, flash upgrade and TSB Embedded (terminal application).

If looking for an application similar to TSP Express for IV curves, take a look at the KickStart IVC (costed) application or check out our github for sample code.

In version 1.13 of our Clarius software, KXCI API is enhanced for the PMU and accessing the SegArb mode directly without UL and EX to KULT code.

Numerous examples have been posted to our github site:
Github 4200A KXCI Python Samples

If the 2400 is reporting 7mV, then it thinks it is doing good job (within the source spec) of enforcing the 0V set point.
But your external voltmeter tells you there is a very big error.

I'd be skeptical of overall performance and would check the various source ranges and measure ranges you intend to use.
Connected a trusted amount of R between HI and LO to validate if the current measure is correct (for the voltmeter reported voltage).

The amount of voltage offset you have is well beyond amounts that are corrected by calibration.  I suspect some sort of repair issue in your unit.

 

Hello,
Have you examined the sample code in the PMU_examples_ulib?
There is also a sample project by same name that show cases each of the modules in the library.
There are a several SegArb related samples in that library.

Let us know if you remain stuck.

Hello,
We should have asked you for some log files to delve into the underlying reason.

Do you have any extra third-party software installed?  That can sometimes cause issues.

The present version of Clarius on the 4200A is 1.13.
I suggest you download that from tek web site and apply.
Then retest.

If issue persists, please contact your local office for a regional Apps Engineer to assist you.