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ML0047 December 1, 2017 Copyright 2017 Bitronics, LLC
5.14 Calibration
Routine re-calibration is not recommended or required. A field calibration check every
few years is a good assurance of proper operation.
5.15 Instantaneous Measurement Principles
The PPX II measures all signals at an effective rate of 64 samples/cycle,
accommodating fundamental signal frequencies from 20 to 75Hz. Samples of all bus
signals are taken using a 16-Bit A/D converter, effectively creating 64 "snapshots" of
the system voltage and current per cycle.
5.15.1 Sampling Rate and System Frequency
The sampling rate is synchronized to the frequency of any of the bus voltages
prioritized as follows: V1
A-N
, V1
B-N
, V1
C-N
. This is the frequency reported as the
"System Frequency". The sampling rate is the same for all channels.
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