METREL MI 3399, Инструкция с упражнениями

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Power and Voltage Quality Trainer AD 2
– MI 3399
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transients. Transient recorder is similar to waveform (inrush) recorder. It stores a
selectable set of pre- and post-trigger samples on trigger activation, but with 10 times
higher sampling rate (~ 50 k Samples/sec). The recorder can be triggered on envelope
or level. The recommended envelope trigger is activated if the difference between
same samples on two consecutive periods of input voltage signals, is greater than the
given limit.
t
U
Level
(70V)
Allowed waveform area
(envelope)
Figure 4-84: Transients trigger detection (envelope)
Figure 4-85: Transient recorder setup
After the WAVEFORM RECORDER is set up, we can proceed with recording. The
recorder is started by pressing the START (F1) key. A yellow icon in the status bar
indicates that transient recorder is active and it's waiting for a trigger. As soon as a
trigger condition is met on any channel, the instrument will start recording it. Active
recording will be indicated in the status bar, with a red icon .