18
18.2 Data Acquisition Units (DAU)
266 Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
With binary signals, the sampling frequency for all DAU types is consistently 2 000 Hz.
Frequency accuracy at f
n
±5 Hz
VCDAU: 5 mHz
VDAU: 5 mHz
CDAU: 5 mHz
Table 18-9 Sampling frequency
DAU type Rated
frequency
Frequency
range
Sampling
frequency
Sample values
per period
VCDAU; VDAU; CDAU 50 Hz 25 Hz to 60 Hz 9,600 Hz 192
DDAU 50 Hz 0 Hz to 500 Hz
VCDAU; VDAU; CDAU 60 Hz 30 Hz to 70 Hz 11,520 Hz
DDAU 60 Hz 0 Hz to 500 Hz
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