Products > Test Equipment
DT9939 Calibration
dseyst:
Does anyone know the procedure to calibrate the DC voltage range of this meter?
retiredcaps:
How much is your meter out by?
dseyst:
Believe it or not, more than my UT61e. It's not so far out that I would consider it a problem, but if I could calibrate it I would. Otherwise I'll live with it. I got it off eBay for under $100 (new).
retiredcaps:
What is your voltage reference that you are using? Is the DT9939 within its specification?
dseyst:
I'm using one of those cheap AD584-M voltage references.I can list the references and the results fromt the two mentioned meters. I do believe the DT9939 is within specs.
REF 2.49923 DT9939 2.4980 UT61E 2.499
REF 4.99852 DT9939 4.994 UT61E 4.998
REF 7.50045 DT9939 7.494 UT61E 7.500
REF 9.99918 DT9939 9.992 UT61E 9.999
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