Fluke 434 - Manual (Page 53)

Flicker
Trend
12
12-3
Trend
To access Flicker Trend screen:
g F4
The parameters in the table update over time. They are recorded whenever the
measurement is on. Trend displays the changes in these values over time. All values in
the table are recorded, but the Trends from each row in the table are displayed one at a
time. Press function key F1 to assign the arrow keys to row selection. The Trend display
may consist of 6 screens.
PF5 displays a fast Trend plot in one screen and is reached via a menu to define expected
measurement duration and Immediate or Timed measurement start. Two vertical marker
lines are used to indicate a Pst period on the PF5 trend.
Available function keys:
F1 Assign up/down arrow keys to select a row from the table
for Trend display. The selected row is displayed in the
screen header.
F2 Cursor on/off.
F3 Assign the arrow keys to Cursor or Zoom operation.
F4 Return to table screen.
F5 Switch between HOLD and RUN of screen update.
Switching from HOLD to RUN invokes a menu to select
immediate (NOW) or TIMED start time which allows you
to define start and duration of the measurement.
Cursor. When the Cursor is on, the Trend values at the Cursor are displayed in the screen
header. Moving the Cursor off the left or right side of the screen brings the next of six
screens (not applicable for the PF5 trend) into the viewing area.
Zoom. Allows you to expand or shrink the display vertically or horizontally to view
details or to fit a complete graph within the screen area. Zoom and Cursor are operated by
the arrow keys and explained in Chapter 17.
Offset and Span are preset for a good display in most cases, but they are adjustable. D-
parameter settings are also adjustable. The adjustment menu is reached via the SETUP
key and function key F3 - FUNCTION PREF. See Chapter 18, FUNCTION
PREFerences.