Omicron CMC 356, Руководство пользователя

Страница: 77 / 142

Technical Data
77
6.10.6.3 Accuracy of Phase Measurement
Figure 6-24:
Phase error as function of
input voltage
Conditions: integration time 1 s, measurement signal sinusoidal,
measurement range 100 V, f = 50 Hz, sampling rate 28.44 kHz.
Figure 6-25:
Phase error as function of
sampling rate
Conditions: integration time 1 s, measurement signal sinusoidal, f = 50 Hz,
measurement range 100 V, both channels same excitation (20 V, 70 V).
Phase Error as a Function of the input voltage
(Phase CH1-CH2, Range:100 V, f = 50 Hz)
0
0,05
0,1
0,15
0,2
0,25
0,3
1 10 100
Amplitude CH2 (Vrms)
P
h
ase E
rr
o
r / °
CH1:10V
CH1:70V
CH1:50V
Phase.
er
ror
in
°
Phase error as function of the input voltage
Phase CH1-CH2; range: 100 V; f = 50 Hz
Amplitude CH2 in Vrms
Phase Error as function of the sampling rate
(fin = 50Hz, R:100V)
0,
33
5°
0,
06
3°
0,
11
4°
0,
26
8°
0,
04
3°
0,
09
9°
0,
22
4°
0,
21
5°
0,
10
4°
0
0,05
0,1
0,15
0,2
0,25
0,3
0,35
0,4
28.44kHz 9.48kHz 3.16kHz
Sampling Rate
Pha
se
Error /
°
U = 10Vrms (R:100V)
U = 20Vrms (R:100V)
U = 70Vrms (R:100V
Phase.
error
in
°
Phase error as function of the sampling rate
(fin = 50 Hz, range = 100 V)
Sampling rate