6-5
CH 6/ Advanced Setup Options
Recording Transients
Procedure to
record transient
disturbance
PX5 uses four different algorithms to detect and record transients:
• Peak or Instantaneous trigger magnitude
• High frequency negative/positive peak detectors magnitude
• Waveshape threshold duration or window
• Waveshape threshold magnitude or tolerance
Continued on next page
Action... Result...
STEP 1: From the Advanced
Options screen, press Transient
Limit.
•Press the limit field to change
limit. Use the keypad to enter
the instantaneous limit. This
value is compared against the
absolute value of each A/D
sample of the V and I channel
waveforms.
NOTE: Do not set this value to
less than or equal to the peak of
the normal waveform. For a
sinusoidal waveform, the peak
is 1.414 x the rms value.
Failure to do this will result in
continuous triggering.
• Enable toggles whether this
limit is enabled or disabled.
• Amps toggles between Volts
and Amps.
•Press Group A B C to set
identical limit value for
Channels A, B and C.
•Press Next to set the high
frequency transient detectors.
Proceed to Step 2 on page 6-6.
•Press Cancel to discard
changes and return to
Advanced Options menu.
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