Products > Test Equipment

Keithley DMM7510, SMU 2450 & 2460 problems

<< < (3/29) > >>

Kleinstein:

--- Quote from: HighVoltage on December 04, 2016, 11:04:15 am ---Thanks for adding to my list of problems.

Lets hope, it is all only software related, which I think it is.
My 2450 SMU never showed a blue screen until one of the the last FW updates, so this would indicate only a software issue.
But the noise discovered by maxwell3e10 might be HW related?
.....

--- End quote ---
The noise problem gets smaller if triggered readings are used (visible in the curve in the noise comparison thread). So the software can do better, if used in a different mode. If done the normal, simple way the AZ function should take care of the flicker noise on time scale longer than two readings (input and zero) even better - just like it did with the Keysight instruments. There would have to be something really odd in hardware to get this type of noise spectrum with active AZ mode. Even if there is some special Hardware involved the better performance using a different mode shows that at least some of the noise is avoidable.

The much more likely reason it, they tried to be clever and used different (more complicated), non standard way of doing the AZ mode and this just does not work well. It might be possible it worked ok on older very different HW. The curve for the K2002 somewhat suggests that there might be a similar weakness with the K2002 too.

Different from the other SW bugs, this is not a rare glitch happening under special conditions. This is more like a well defined point in the software, where a not so good formula is used. Normally this should be relatively easy to find and fix.

maxwell3e10:
Has anyone tried to keep track of the code it displays on the blue screen? Perhaps it would be useful to make a list of the codes.

When I program a trigger series from the front panel, there is 100% chance it will lock up soon, although not blue screen.

dr.diesel:
Vince W from Keithley just responded:

"Thank you for bringing this to our attention. I have forwarded the links on to our product teams to address these issues. We would post any responses on our forum, so the blog participants should watch here."

Direct link:

https://forum.tek.com/viewtopic.php?p=281837&sid=f0617886f132ba13c5af865cee429a5d#p281837

dr.diesel:

--- Quote from: maxwell3e10 on December 04, 2016, 12:56:53 pm ---Has anyone tried to keep track of the code it displays on the blue screen? Perhaps it would be useful to make a list of the codes.

--- End quote ---

I don't see the blue screen near as often as the general lockups, but this is the error I've seen repeatability.

PC= 0003D660

HighVoltage:
I just had a different blue screen error code on the screen:
PC=0003D661

All error codes will be edited in to the first post.
Any others?

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod