Ac Current - Tektronix DMM4040 User Manual

DMM4040/4050
Users Manual

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.
Input Protection....................................................... Tool accessible 11 A/1000 V and 440 mA/1000 V fuses, limits of
Measurement Method ............................................. ac-coupled true-rms, dc-coupled to the fuse and shunt (no blocking
AC Filter Bandwidth
Slow .................................................................... 3 Hz to 10 kHz
Medium ............................................................... 20 Hz to 10 kHz
Fast ..................................................................... 200 Hz to 10 kHz
Crest Factor Error (applies to non-sinusoidal waveforms only)
Maximum Crest Factor ....................................... 5:1 at full scale
Additional Crest Factor Errors (<100 Hz)............ Crest factor 1-2, 0.05 % of full scale
Input Characteristics
Range
100.0000 A
100 A
1.000000 mA
1 mA
10 mA 10.00000 mA
100.0000 mA
100 mA
[3]
400 mA 400.000 mA
[2]
1.000000 A
1 A
[1][2]
3 A 3.00000 A
[2]
10 A 10.00000 A
[1] Part of 10 A range
[2] Available at front panel connectors only
[3] 400 mA continuously; 550 mA for 2 minutes on, 1 minute off; maximum crest factor 3:1 at 400 mA
1-22
Resolution
Resolution
4½ Digits
10 nA
100 nA
1 A
10 A
100 A
100 A
1 mA
1 mA
400 mA continuous 550 mA for 2 minutes on, 1 minute off.
capacitor)
Crest factor 2-3, 0.2 % of full scale
Crest factor 3-4, 0.4 % of full scale
Crest factor 4-5, 0.5 % of full scale
Shunt Resistance
5½ Digits 6½ Digits
1 nA 100 pA
10 nA 1 nA
100 nA 10 nA
100 nA
1 A
10 A 1 A
10 A 1 A
100 A 10 A
100 A 10 A
Burden Voltage
(Ohms)
100 <0.015 V
<0.15 V
100
<0.025 V
1
<0.25 V
1
<0.50 V
1
<0.05 V
0.01
<0.05 V
0.01
<0.5 V
0.01