A digital multimeter's data sheet gives its DC voltage accuracy on the range as

PHYSICS · Multi-part · Fermi University Physics · Scientific Practice & Experimental Methods · Electronics, Instrumentation & Communication · Circuit foundations and passive networks

Electronics for Measurement, Ch The bench: probes, cables, grounds and what the instrument shows

Problem

A digital multimeter's data sheet gives its DC voltage accuracy on the

20.00\,\mathrm{V}

range as

\pm(1.0\%\ \text{of reading} + 2\ \text{counts})

, where one count is

0.01\,\mathrm{V}

(the size of the last displayed digit on that range). ((a)) Find the absolute accuracy band, in volts, for a reading of

15.00\,\mathrm{V}

, and express it as a percentage of that reading. ((b)) Do the same for a reading of

2.00\,\mathrm{V}

on the same range.

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