Recording; Waveform Recorder - Novatech Bitronics M87X Series Manual

point will transition from 0 to 1 at the timers scheduled activation. It will hold at 1 briefly
and then return to 0. These 'Periodic Trigger' points can then be used to trigger any of the
actions selected.

5.4 Recording

The M87x has five different methods of recording data. High-speed samples of the input
signal are captured and stored by the two Waveform Recorders, slower-speed
measurement data is stored by the two Disturbance Recorders, long-term load-profile data
is stored by the Trend Recorder, and a voltage fluctuation table (VFT) and a sequence of
event (SOE) log can be created as well.
The Waveform Recorders save the actual samples from the input channels, as well as
from the Digital I/O modules. The two Disturbance Recorders log values at a user
configurable rate of 1-3600 cycles. The Trend Recorder logs values at a user configurable
rate of 1 minute -12 hours. The VFT file records voltage values when pre-selected
thresholds are passed, and the SOE file creates a summary of events in the order they
occur.
The Waveform and Disturbance records and the VFT and SOE files are created based on
event conditions. Unlike these other recorders, the trend recorder is not based on
triggered conditions but instead runs constantly when selected to record.

5.4.1 Waveform Recorder

A waveform record can be triggered by a measurement exceeding an upper or lower
threshold, by a manual protocol command, or by a digital or virtual input channel changing
state. When a trigger condition is met, a record is created that contains samples from the
input channels. The waveform record normally contains 20 cycles of pre-trigger and 40
cycles of post-trigger information. The pre- and post- trigger times are configurable by the
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ML0021 August 15, 2018 Copyright 2018 Bitronics, LLC