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Self Cal problem with 54845A scope

Question asked by khardy on Jan 26, 2011
Latest reply on Jan 28, 2011 by khardy

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I'm trying to run the self-cal for a 54845A scope and it hangs up on channel 3. Common and channels 1 & 2 proceed normally, but when it gets to channel 3 in just sits. If I cancel it, the cancel window goes away, but nothing else happens. The only way to get out of it is to turn the scope off. I've upgraded the firmware, but that didn't help. If I attach a signal, it displays normally. Any idea what I can do to fix it?

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algoss Jan 27, 2011 8:23 AM
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Send it for repair. This is not a user-repairable problem.

AG
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khardy Jan 27, 2011 9:02 AM
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I thought this model was no longer repaired by Agilent because it is obsolete. Is that not the case? Thanks
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algoss Jan 28, 2011 6:23 AM
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Sorry, I was wrong. You are right. Support for this model ended in 2006.

I guess if it's working and you trust the results, then don't calibrate it. If it were mine I might verify accuracy using a variety of signals and maybe a splitter. Verify things like Rise Time, Voltage, and Trigger Jitter against another channel. If they come out the same, then just live with it. You could always buy a new scope .

AG
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khardy Jan 28, 2011 8:51 AM
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Thanks! I work in the calibration lab and this is a customer's scope. If it's not working correctly we can't give it a fully certified calibration. I'll probably recommend they retire it or use it for indication only. Perhaps they will get a new scope. Thanks for the help!
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Self Cal problem with 54845A scope

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