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True-rms Digital Multimeters

Detailed Specifications

Electromagnetic Compatibility Standards (EMC)

European EMC....................................................EN61326-1

Australian EMC ...................................................; N10140

US FCC ...............................................................FCC CFR47: Part 15 CLASS A

Certifications .........................................................UL, CE, CSA, ; (N10140),

Detailed Specifications

Accuracy:

Accuracy is specified for a period of one year after calibration, at 18 °C to 28 °C (64 °F to 82 °F), with relative humidity to 90 %. Accuracy

specifications are given as: ±( [ % of reading ] + [ number of least significant digits ] ). Accuracy specification assumes ambient temperature

stable at ±1 °C. For ambient temperature changes of ±5 °C, rated accuracy applies after 2 hours. To obtain full accuracy in DC mV,

Temperature, Ohms and Lo (50) Ohms, let the meter stabilize 20 minutes after using LoZ.

True-rms:

AC mV, AC V, AC μA, AC mA, and AC A specifications are ac-coupled, true rms, and are specified from 2 % of range to 100 % of range,

except 10 A range is specified from 10 % to 100 % of range.

Crest Factor:

Accuracy is specified with AC crest factor ≤ 3.0 at full-scale, increasing linearly to 5.0 at half-scale, except the 1000 V range, where it is 1.5

at full scale, increasing linearly to 3.0 at half-scale and 500 mV and 5000 μA, where it is ≤3.0 at 80 % of full scale, increasing linearly to 5.0

at half-scale. For non-sinusoidal waveforms add ±(0.3 % of range and 0.1 % of reading).

AC Floor:

When the input leads are shorted together in the ac functions, the Meter may display a residual reading up to 200 counts. A 200 count

residual reading will cause only a 20 count change for readings at 2 % of range. Using REL to offset this reading may produce a much larger

constant error in later measurements.

AC+DC:

AC+DC is defined as

dcac +

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Fluke 289 Manuel d'utilisateur Page 77