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3 Years

A project log for Precision Voltage and Current Reference

A little something to check your digital multimeter accuracy occasionally.

bud-bennettBud Bennett 07/14/2025 at 01:340 Comments

Same conditions as last year:

Temperature = 70F (21C), HighZ input, 100plc

Reading                                 Scale             Other                                   Error             Drift (Since last test)

99.99250 mV                       100mV           Null, Avg 20 samples         ~-7.5uV            +9.34uV

1.000077 V                           1V                  Null, Avg 20 samples          +76uV               +6uV 

10.000036V                          10V               Avg 20 samples                  +36uV               +36uV

Everything is still looking pretty good.

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