Omicron CMC 356, User Manual

Page: 88 / 142

CMC 356 Reference Manual
88
6.10.8 Transient Recording
In this operating mode, transient signals on up to 10 input channels can be
recorded synchronously.
The recording starts whenever a pre-defined trigger condition is met. The
selectable trigger conditions are:
• Trigger on threshold with positive or negative edge
• Combination of different power quality triggers (sag, swell, harmonic,
frequency, frequency change, notch)
I
n addition, a time offset for the capture window relative to the trigger event
can be specified. The trigger delay can be
• positive (recording begins after the trigger event)
• or negative (recording begins already before the trigger event).
Figure 6-33:
Illustration of the
relationship between
trigger events, trigger
delay, and recording time
Note: More details about triggering methods can be found in the OMICRON
Test Universe Help and in the practical examples of the ELT-1 option.
The maximum length of the recording depends on the settings for the
sample rate and the number of channels to be captured.
Start time for
recording
Trigger event
End of
recording
Trigger delay (negative)
Recording of input signals