Diagram Of The 4 Quadrants; Mechanism For Triggering Transient Sensors - AEMC 8335 User Manual

Powerpad 3-phase power quality analyzer

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Diagram of the 4 quadrants

This diagram is used as part of measuring power and energy (see § 5.2)

The sample rate is a constant value equivalent to 256 samples per cycle. When

a transient search is launched, each sample is compared to the sample from the

preceding cycle. The preceding cycle matches the middle of the tube; it is used as

a reference. As soon as a sample leaves the tube, the trigger event comes; repre-

sentation of the transient is then captured by the PowerPad

. The cycle preceding

the event and the three following cycles are saved to memory.

Here is a graphical representation of the transient capture trigger mechanism:

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Power Quality Analyzer Model 8335

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