AEMC PowerPad III 8336 User Manual

Transient Capture on the
AEMC PowerPad III Model 8336
Transients are short-term current and voltage phenomena that occur in the system under
measurement. The process the AEMC PowerPad III Model 8336 uses for recording transients is
as follows:
The instrument sampling rate is a constant
•
256 samples per cycle.
• When a transient search is started on the
instrument, each sample is compared to the
corresponding sample from the preceding
cycle.
• The transient threshold is the user-defined
amount of volts or amps for any datapoint to
differ from the corresponding datapoint
exactly 1 cycle earlier. The preceding cycle
defines the mid-point of the trigger envelope
and is used as reference.
As soon as a sample is outside the envelope,
•
the triggering event occurs; the transient data
is then captured by the instrument.
The cycle preceding the event and the three
•
following cycles are saved to memory.
The following explains how to configure, schedule,
and view a transient recording session on the Model
8336. These instructions assume you are using the
Model 8336 as a standalone instrument.
Note that you can also perform these tasks by connecting the instrument to a computer running
AEMC's DataView software. For more information, see the PowerPad III Model 8336 User
Guide.
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