Omicron CMC 356 - Accuracy of Phase Measurement

Technical Data
81
6.11.6.3 Accuracy of Phase Measurement
Figure 6-23:
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 6-24:
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
110100
Amplitude CH2 (Vrms)
Phase Error / °
CH1:10V
CH1:70V
CH1:50V
Phase. error 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
,
3
3
5
°
0
,
0
6
3
°
0
,1
1
4
°
0
,
2
6
8
°
0
,
0
4
3
°
0
,
0
9
9
°
0
,2
2
4
°
0
,
2
1
5
°
0
,1
0
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
Phase 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