Chapter II
Benchtop multimeter
45
Curve showing typical measurement error (5 V, 50 V, 500 V ranges)
1000 pts
1 kHz
10 kHz
100 kHz
Vin = 100 % F.S.
Vin = 50 % F.S.
Vin = 15 % F.S.
50000 pts
25000 pts
7500 pts
2500 pts
1%
5%
10%
2%
Vin = 5 % F.S.
6.3. DC
current
Selector
switch
position
Ranges
Accuracy
Max
voltage
drop
Protection
Fuses*
Resolution
500 µA
0.2%R + 5 D
700 mV
600 V
RMS
F1 + F2
10 nA
µA mA
5 mA
0.2%R + 2 D
700 mV
600 V
RMS
F1 + F2
100 nA
50 mA
0.05%R+2 D
700 mV
600 V
RMS
F1 + F2
1 µA
500 mA
0.2%R + 2 D
1.5 V
600 V
RMS
F1 + F2
10 µA
10 A
10 A
0.5%R+ 5 D
500 mV
600 V
RMS
F2
1 mA
* See fuse specifications, § 7.1.1.
Number of points:
50 000 (or 5 000 - see § 3.3.)
Range
selection:
Automatic or manual for the 500
µA, 5
mA,
50 mA, 500 mA ranges
Additional error in Pk+/- mode for a pulse width of
≥
1 ms: 1% R
±
50 D
For measurements performed on alternative signals, the selected range must tally with the
max. value of the signal peak.
6.4.
AC currents (AC and AC+DC)
Ranges
Accuracy
Protection
Fuses*
Resolution
Max. Peak
40 Hz to 5 kHz
5 % to 100 % of range
500 µA
0.75 % R + 30 D
600 VRMS
F1 + F2
10 nA
1 mA
5 mA
0.6 % R + 30 D
600 VRMS
F1 + F2
100 nA
10 mA
50 mA
600 VRMS
F1 + F2
1 µA
100 mA
500 mA
0.7 % R + 30 D
600 VRMS
F1 + F2
10 µA
1 A
10 A
1 % R + 30 D up to 2 kHz
600 VRMS
F2
1 mA
* See fuse specifications, § 7.1.1.
