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Brymen Crest and Min/Max Function VDC Capability

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armandine2:
Fluke 287 on min/max - just tested the battery on start - 3 times

first min reading was negative, under a volt - not sure what that was about? - ghost voltage, as I set min/max prior to attaching leads to battery :palm:
second reading min was over 10 volts
third reading - saved

I'm thinking may be my 287 isn't so quick as other's 289?

Ed to add Peak info from manual

chebo:
Let's raise a forgotten topic... I couldn't find a newer topic about this Crest mode.
I recently purchased a BM789 and decided to use it to check my car battery. And at the same time I compared it with what the oscilloscope shows. This is what happened.

The result is more or less the same, but there is still a small difference.
Then I decided to conduct a small experiment at home with this scheme.

I manually closed and opened the switch shown in the diagram, simulating a voltage drop. The average value for several measurements in the Crest mode was 7.60 V. As a result, the relative error was approximately 4%.

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