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Fluke 434/435
Users Manual
9-4
The screen builds up from the right side of the screen and the corresponding values are
displayed in the screen header.
Available function keys:
F1
Assign up/down arrow keys to select the voltage or current
channels to be displayed.
F2
Cursor on/off.
F3
Assign the arrow keys to Cursor or Zoom operation.
F4
Access to Events tables.
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 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 are explained in Chapter 19.
Offset and Span of the Trends are auto ranging for a good display in most cases. This is
based upon Nominal Voltage (Vnom) and Current range (A range). If desired, you can
change Offset and Span. The adjustment menu is reached via the SETUP key and
function key F3 - FUNCTION PREF. See Chapter 20, FUNCTION PREFerences.
Event criteria such as threshold, hysteresis and others are preset, but they may be
adjusted. The adjustment menu is reached via the SETUP key and limits setup. See
Chapter 20, Limits Adjustments.
Events Tables
To access the Dips & Swells Events Tables:
f
F4
The Events table lists all threshold crossings of phase voltages. Thresholds according to
international standards or user-definable thresholds can be used. Threshold adjustment is
reached via the SETUP key and Limits. For detailed information see Chapter 20, Limits
Adjustments.
In Normal mode major event characteristics are listed: start time, duration, and voltage
magnitude. Detail shows details of threshold crossings per phase.