Datasheet

Digital Multimeters — Tektronix DMM4020
AC Current
The following A
C current specifications are for sinusoidal signals with amplitudes
greater than 5% of range. For inputs from 1% to 5% of range, add an additional
error of 0.1% of range.
Characteristic
Description
Input Protection
Tool-accessible 11 A / 1000 V and 440 mA / 1000 V
fuses
Measurement Method
AC-coupled true RMS
Shunt Resistance 0.01 Ω for 2 A and 10 A ranges
1 Ω for 20 mA and 200 mA
AC Filter Bandwidth
20 Hz - 100 kHz
Maximum C rest Factor 3:1 at Full Scale
Additional Crest Factor
Errors (<100 Hz)
Crest Factor 1-2, 0.05% of full scale
CrestFactor2-3,0.2%offullscale
Only applies to non-sinusoid signals
Input Characteristics
ResolutionRange
Full Scale
(5½ Digits)
Slow
Medium Fast
Burden Voltage
20 mA 19.9999 mA 0.1 μA1μA1μA <0.05 V
200 mA 199.999 mA 1 μA10μA10μA<0.5V
2 A 1.99999 A 10 μA100μA100μA<0.1V
10 A 10.0000 A 100 μA1mA 1mA <0.5V
Accuracy
Uncertainty*
3
90 d ays 1 year
Range Frequency
23 °C ± 5 °C 23 ° C ±5 °C
Temperature C oef ficien t/°C
Outside 18 - 28 °C
20 Hz - 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.00520 mA
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 0.8 + 0.05 1 + 0.06 0.015 + 0.005200 mA
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.0052A
45 Hz - 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
20 Hz - 45 Hz 1 + 0.1 1.25 + 0.12 0.015 + 0.00510 A
45 Hz - 2 kHz 1 + 0.1 0.5 + 0.12 0.015 + 0.005
*
3
Uncertainty given as ±(% of reading + % of range).
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