Datasheet

Digital Multimeters — Tektronix DMM4050 and DMM4040
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% o f range.
Characteristic
Description
Input Protection
Tool-accessible 11 A / 1000 V and 440 mA / 1000 V
fuses, limits of 400 mA continuous 550 mA for 2 minutes
on, 1 minute off
Measurement Method
AC-coupled true RMS, DC-coupled to the fuse and shunt
(no blocking capacitor)
AC Filter Bandwidth
Slow
3Hzto10kHz
Medium 20 Hz to 10 kHz
Fast 200 Hz to 10 kHz
Maximum Crest Factor 5:1 at Full S cale
Additional Crest Factor
Errors (<100 Hz)
Crest factor 1-2, 0.05% of full scale
Crestfactor2-3,0.2%offullscale
Crestfactor3-4,0.4%offullscale
Crestfactor4-5,0.5%offullscale
Only applies to non-sinusoid signals
Input Characteristics
ResolutionRange Resolution
4½ Digits 5½ Digits 6½ Digits
Shunt Resistance
(Ohms)
Burden Voltage
100 A 100.0000 A10nA 1nA 100pA
100 
<0.015 V
1 mA 1.000000 mA 100 nA 10 nA 1 nA
100 
<0.15 V
10 mA 10.00000 mA 1 A 100 nA 10 nA
1 
<0.025 V
100 mA 100.0000 mA 10 A1A 100 nA
1 
<0.25 V
400 mA*
9
400.000 mA 100 A10A1A
1 
<0.50 V
1A*
8
1.000000 A 100 A10A1A
0.01 
<0.05 V
3A*
5, 8
3.00000 A 1 mA 100 A10A
0.01 
<0.05 V
10 A*
8
10.00000 A 1 mA 100 A10A
0.01 
<0.5 V
*
5
Part of 10 A range.
*
8
Available at front-panel connectors only.
*
9
400 mA available in software version 1.0.700.18 or greater only. 400 mA continuously; 550 mA for 2 minutes on, 1 minute off; maximum crest factor 3:1 at 400 mA.
www.tektronix.com/dmm4050_4040 11