Fluke 434 User Manual download pdf (Page 53)

Flicker

Trend12

12-3

Trend

To access Flicker Trend screen:

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:

Assign up/down arrow keys to select a row from the table

for Trend display. The selected row is displayed in the

screen header.

Cursor on/off.

Assign the arrow keys to Cursor or Zoom operation.

Return to table screen.

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.

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Fluke 434 User Manual Page 53