Author Topic: Keithley DMM7510, SMU 2450 & 2460 problems  (Read 44198 times)

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Offline suntar

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #125 on: February 07, 2020, 01:02:38 pm »
MegaVolt, thanks,
TSP/SCPI interface seems to be broken:   only *idn? command gets answer, others return either an empty string or timeout.
for example,
==
loadscript test
print(localnode.model)
endscript
test()
==
returns nothing. 

Also, people in our lab have an idea that previous firmware upgrade to 1.1.0s  version  could be done improperly, like 1 time instead of 2 in a row. It was long time ago and we can not check this nowdays.
The unit was working fine with this 1.1.0s, except real buttons.
« Last Edit: February 07, 2020, 01:04:52 pm by suntar »
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #126 on: February 07, 2020, 02:28:35 pm »
Also, people in our lab have an idea that previous firmware upgrade to 1.1.0s  version  could be done improperly, like 1 time instead of 2 in a row. It was long time ago and we can not check this nowdays.
The unit was working fine with this 1.1.0s, except real buttons.

You can always downgrade to an older FW version and see if the problem persist.

Lately I have no more problems with my DMM7510, it is very stable.
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Offline suntar

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #127 on: February 07, 2020, 02:39:24 pm »

>You can always downgrade to an older FW version and see if the problem persist.

That's probably what I need.  But how do I do this  if screen is not working anymore? 
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #128 on: February 07, 2020, 02:54:07 pm »
It seems more like you can not do this yourself.

I would call them by phone.
The Keithley staff in Munich / Germany is very helpful on the phone.
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Offline bson

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #129 on: February 08, 2020, 02:19:42 am »
1.7.1 released to address a critical fix for the SMUs (2450 atleast).

New I-V tracer app available that is installed via Kickstart 2.2.0. Seemed like a cool basic feature, until you find out it is a paid license that starts at $1500.  :palm:

Either way you can try it out for 30 days, then uninstall.
Don't they have a scripting language to create apps like this?  How hard can it be to put one together?

Can apps be controlled using SCPI over LXI?
 

Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #130 on: April 24, 2021, 07:03:13 am »
@HighVoltage, since you have some Keithley equipment too I just wanted to point out this problem I've discovered with the 2450.

I wonder if you can verify, perhaps with your 2460 also?
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #131 on: April 24, 2021, 06:06:24 pm »
Since the last few years and latest firmware update I had no more problems with either one of my Keithley's

I posted my results in the other thread
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Offline YetAnotherTechie

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #132 on: April 24, 2021, 09:36:42 pm »
Since the last few years and latest firmware update I had no more problems with either one of my Keithley's

I posted my results in the other thread
Bad screen on the top right instrument?
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #133 on: April 24, 2021, 10:32:34 pm »
Bad screen on the top right instrument?

No, the refresh rate of the DMM7510 is so fast that the camera was too slow.

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Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #134 on: October 21, 2024, 07:57:35 pm »
Hi all, I know this is an old thread but it seems most appropriate to continue here.

I began encountering a "blue screen of death" on my Keithley 2450 SMU, running the latest FW, and I don't see this particular error mentioned previously:

FW v01.07.12
PC=00151180


This happens randomly but often enough that I'm wondering if anyone else encounters it...maybe I have a hardware problem?

My sequence of steps is:
1. Power on; system boots normally.
2. Select "Quickset" > "Power Supply"
3. Settings: 4V, 1A, 2-Wire Sense
4. Blue screen

The problem might not be related to the above sequence of button presses; that's just how I've been encountering it recently.

A power cycle, waiting a few seconds, and then power back on seems to clear the problem and the SMU works fine as far as I can tell.

Any advice on the best way to reach out to Tektronix/Keithley support about it?

I will update with any information/resolution that I find.

Thank you!
 

Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #135 on: October 21, 2024, 08:12:50 pm »
Interesting that this report from dr.diesel is a similar sequence of button presses (starts with Quickset) that yielded a blue screen.

Makes me think that "Quickset" setup could be a where the problem originates...
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #136 on: October 22, 2024, 08:58:43 am »
In the last few years I had absolutely zero problems with these instruments.
I am also using Quickset a lot but not that particular sequence.
On the coming weekend I will give your procedure a try.


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Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #137 on: October 23, 2024, 04:26:08 am »
In the last few years I had absolutely zero problems with these instruments.
I am also using Quickset a lot but not that particular sequence.
On the coming weekend I will give your procedure a try.

Thanks for the note, HighVoltage! I appreciate your giving it a try this weekend.

For what it's worth, I would say the problem occurs within the first minute after power up (especially during the time when relays and other things are still clicking inside the instrument). It seems that if the problem does not occur in the moments after the instrument is turned on then it does not occur at all...until possibly at the next power on.

I heard back from one of the Keithley folks (Brad O) via DM. He has raised my reported issue internally with Keithley engineering and also recommended I submit a ticket, which I have just done.

They will try to reproduce. In the meantime if I can find a more definitive set of steps to reproduce the issue I will update here.
 

Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #138 on: October 24, 2024, 03:52:31 am »
Here is another problem that just appeared on my 2450; first time I've seen this issue.

- Like the previous "blue screen of death" I posted about, this issue also occured immediately after the SMU was turned on. Maybe there's something(s) wrong with system initialization under some circumstances.

Video: here

Sequence of steps that caused the problem:
1. Power on; system appears to boot normally.
2. Select "Quickset" > "Power Supply"
3. Settings: 4V, 1A, 2-Wire Sense
4. "Error -286" message has appears mentioning about "TSP Runtime error...". 
Press "OK" to close the dialog.
- Notice in the image/video the text in the middle of the top bar that typically reads "defbuffer1" is showing the characters "}C}B,", which is very odd.

>> I started the video from this moment to capture what was happening. Watch the video to see sequence of steps.

Notes:
- "Error -286" message has appears mentioning about "TSP Runtime error..." I wonder if that means the error is script related?
- As shown in the video I do have a TSP script in the instruments memory, but I have not selected anything to cause the script to run. It seems to attempt to run the script itself...or perhaps the "TSP Runtime error" is unrelated to the script in memory.
- In the video I show going through a sequence of steps with "QuickSet" that has nothing to do with TSP scripts and yet the same error is repeated.
- I delete the script from internal memory and the issue still occurs. This suggests the error may have nothing to do with the TSP script in the memory.
-  I power cycle the instrument and after boot it works normally.

I have informed Keithley about this issue also.
« Last Edit: October 29, 2024, 05:53:29 am by Sparky »
 

Offline HighVoltageTopic starter

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #139 on: October 29, 2024, 09:27:39 am »
I repeated your steps and can not get any blue screen at all.

My two DMM7510, the 2450 & 2460 are running perfectly alright at the moment.

3 Years ago, my two DMM7510 have been 3.1 uV apart from each other in calibration on the 10V range and today, they are still 3.1 uV apart from each other. I find it amazingly impressive, how these instruments hold their calibration so stable.







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Offline Sparky

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Re: Keithley DMM7510, SMU 2450 & 2460 problems
« Reply #140 on: November 03, 2024, 11:41:48 pm »
I repeated your steps and can not get any blue screen at all.

My two DMM7510, the 2450 & 2460 are running perfectly alright at the moment.

3 Years ago, my two DMM7510 have been 3.1 uV apart from each other in calibration on the 10V range and today, they are still 3.1 uV apart from each other. I find it amazingly impressive, how these instruments hold their calibration so stable.

Thanks, HighVoltage! I appreciate you trying on your instruments. :-+

I am in touch with Keithley Technical Support about the problems listed above. So far one option is to downgrade the FW, and secondly to add an empty .tsp script to the instrument to see if that clears "Error -286". Also, just tro to provide more information on reproducing the error.

I will update post major updates/resolutions to this thread to keep folks informed.
 


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