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Fluke 434/435
Users Manual
15-2
e
ENTER
f
F3
Use the arrow keys in the Start menu to adjust the trigger limits: expected inrush time,
nominal current, threshold, and hysteresis. The maximum current determines the vertical
height of the current display windows. Threshold is the current level that triggers the
trend capture. The inrush time is the time between trigger and the time that the current
falls to the value indicated by Hysteresis and is indicated on the trend display between
two vertical markers. The screen header displays the rms of all rms values during the
inrush time. If the Cursor is on, the rms measuring values at the Cursor are displayed.
pretrigger
THRESHOLD
(=TRIGGER)
HYSTERESIS
DURATION
AMPLITUDE WINDOW
inrush time
rms during inrush
1
12.3 A
t 35 s
3
1.5 A
2
12.3 A
}
Figure 15-1. Inrush characteristics and relation with start menu