Flk - Instantaneous Flicker; Pst - Short-Term Flicker - Arbiter Systems 928A User Manual

Long-Term Flicker Indicator, Plt: The flicker
severity evaluated over a long period (over 2 hours)
using successive Pst values. The Plt threshold is 0.8.
Plt is not measured by the 928A.
FLK – Instantaneous Flicker
FLK flicker is defined as the instantaneous flicker that
is updated each second. By simply pressing FLK the
928A will display instantaneous flicker based on the
signals applied to channel A and/or B. To view flicker
on the 928A, you must select voltage for measurement
channels A and/or B.
1. Press 2nd AV and/or 2nd
2. Press FLK, and read the instantaneous flicker.
FLK flicker values are measured at approximately
100 millisecond intervals and updated on the 928A dis-
play each second.
Pst – Short-Term Flicker
Pst flicker is defined as Short-Term Flicker and aver-
ages the flicker values over a ten minute time period,
counting down in seconds. The display shows a count-
down value as Pst is being processed. At the end of
the countdown period, Pst is displayed based on the
signals applied to channels A and/or B.
1. Press 2nd AV and/or 2nd
2. Press 2nd Pst, and read the short-term flicker.
BV.
BV.
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