Chapter II
Benchtop multimeter
27
5.8. Frequencies
Selector switch setting: V
AC
+ SEL
Measurement range: 0.62 Hz to 500 kHz
Accuracy: 0.03%
Protection: 1100 V
PK
Display: 50 000 points
RANGE SENSITIVITY
5 V to 500 V 750 V
0.62 Hz to 5 kHz * 2 % of range 100 V
5 kHz to 50 kHz 5 % of range 250 V
50 kHz to 500 kHz 10 % of range ////////////////
* Rectangular signals
5.9. Duty cycle %+, %-
θ
T
θ
T
% - =
θ
T
x 100
% + =
θ
T
x 100
Resolution: 0.01%
Minimum duration for θ or T - θ : 2 µs
Maximum duration for T : 0.8 s
Minimum duration for T : 100 µs
Absolute error as a % :
310
4
.
−
T
Sensitivity : see sensitivity in frequency measurement mode
Absolute additional error on θ, due to the zero crossing slope : 0.1 x
C
P
with C : V range ( C = 5000 V for 1000V
DC
ou 750 V
AC
ranges)
with P : slope in V/s
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