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Users Manual

16-6

Two ways to access Trend:

1. Use the up/down arrow keys to highlight an event in the table. To access Trend press

the ENTER key. The Cursor is on, in the mid of screen and located on the selected

event. Zoom is set to 4.

2. Press Function key F4 to view the Trend part showing the most recent measuring

values. Cursor and Zoom can be switched on afterwards when required.

Measurement specific features:

• V rms events: an event is recorded each time that a 10 minute aggregated RMS value

violates its limits.

• Harmonics events: an event is recorded each time a 10 minute aggregated harmonic

or THD violates its limit.

• Flicker events: an event is recorded each time Plt (long term severity) violates its

limit.

• Dips/Interruptions/Rapid Voltage Changes/Swells events: an event is recorded each

time one of the items violates its limits.

• Unbalance, Frequency events: an event is recorded each time that a 10 minute

aggregated RMS value violates its limits.

Trend Display

Figure 16-3. Trend Display

The Trend screen shows the changes over time of values in the table. Zoom and Cursor

are available to examine Trend details. Zoom and Cursor are operated by the arrow keys

and explained in Chapter 17.

Available function keys:

Assign up/down arrow keys to select a set of Trends for

display. The selected set is shown in the screen header.

Cursor on/off.

Assign the arrow keys to Cursor or Zoom operation.

Return to events table.

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Fluke 434 User Manual Page 72