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Topic: 3458A (Read 2820 times)
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drhex
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Re: 3458A
«
Reply #25 on:
January 11, 2025, 06:05:29 pm »
Then I have an issue with the box. Meh.
205, "HARDWARE FAILURE -- CAL VALUE OUT OF RANGE 101"
210, "HARDWARE FAILURE -- CALIBRATION REQUIRED"
101, "CALIBRATION ERROR"
101 is precharge DAC, assume this is A3?
«
Last Edit: January 11, 2025, 06:15:06 pm by drhex
»
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drhex
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Re: 3458A
«
Reply #26 on:
January 12, 2025, 08:15:15 pm »
Strange thing it is working pretty well when it is just sitting there. Average drift over the last 30 days is 0.12156 in a completely temperature uncontrolled environment with TEMP? varying from 37.4 to 39.1 degrees. So good enough by KS standards.
@ianj thinks it might be a weak relay - how do I find that?
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drhex
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Re: 3458A
«
Reply #27 on:
January 12, 2025, 08:49:21 pm »
Another interesting finding, stepping up through the ranges I get materially different indications between mA and A i.e 0.0000984 A and 0.0999915 mA for a .01 mA input from a 3245A.
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IanJ
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Re: 3458A
«
Reply #28 on:
January 13, 2025, 10:22:29 am »
Weak relay or iffy contacts for the issue whereby it wasn’t letting you ACAL with the bananas populated……if I read you correctly.
I’d be looking at this issue first before any drift problem.
Ian
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