Datasheet

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Digital Multimeters – Tektronix DMM4020
AC Current
The following AC 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 Crest Factor 3:1 at Full Scale
Additional Crest Factor
Errors (<100 Hz)
Crest Factor 1–2, 0.05% of full scale
Crest Factor 2–3, 0.2% of full scale
Only applies to non-sinusoid signals
Input Characteristics
Range Full Scale
(5½ Digits)
Resolution Burden Voltage
Slow Medium Fast
20 mA 19.9999 mA 0.1 μA 1 μA 1 μA <0.05 V
200 mA 199.999 mA 1 μA 10 μA 10 μA <0.5 V
2 A 1.99999 A 10 μA 100 μA 100 μA <0.1 V
10 A 10.0000 A 100 μA 1 mA 1mA <0.5 V
Accuracy
Range Full Scale
(5½ Digits)
Uncertainty
*3
Temperature Coefficient/°C
Outside 18– 28°C
90 days 1 year
23°C ±5°C 23°C ±5°C
20 mA 20 Hz – 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.005
45 Hz – 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
200 mA 20 Hz – 45 Hz 0.8 + 0.05 1 + 0.06 0.015 + 0.005
45 Hz – 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
2 A 20 Hz – 45 Hz 1 + 0.05 1.25 + 0.06 0.015 + 0.005
45 Hz – 2 kHz 0.25 + 0.05 0.3 + 0.06 0.015 + 0.005
10 A 20 Hz – 45 Hz 1 + 0.1 1.25 + 0.12 0.015 + 0.005
45 Hz – 2 kHz 1 + 0.1 0.5 + 0.12 0.015 + 0.005
*3
Uncertainty given as ±(% of reading + % of range).