Bedienungsanleitung Fluke 289 (Seite 57 von 88) (Englisch)

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True-rms Digital Multimeters

Changing Meter Setup Options

The primary display indicates the input signals pulse width in

milliseconds. The frequency of the signal is displayed in the

secondary display. The mini-measurement display indicates the

volts or amps value of the input signal. The bar graph tracks the

volts or amps value of the signal and not the pulse width value.

The pulse width polarity is displayed to the right of the duty cycle

value. J indicates a positive pulse width and K indicates a

negative pulse. To change the polarity, press the softkey labeled

J K. The polarity indicator changes to the opposite polarity.

Changing Meter Setup Options

The Meter has a number of preset features such as date and

time formats, backlight and battery save mode timeouts, and the

displayed language. These variables are referred to as Meter

setup options. Many setup options affect general Meter

operations and are active in all functions. Others are limited to

one function or group of functions.

Access to the setup options is always available through the

softkey labeled Setup. Information about the Meter, such as

serial number, model, for example. is also accessed through the

setup menu.

Resetting Meter Setup Options

The Meter’s setup options can be reset to default values through

the setup menu. Open the setup menu by pressing the softkey

labeled Setup. Position the menu selector next to the menu item

labeled Reset and press the softkey labeled Setup. A message

will appear asking to confirm the reset action. Press the softkey

labeled OK to perform the reset.

Note

A setup reset also resets the temperature offset and

dBm reference to their default value.

In addition to resetting the setup variables, pressing the softkey

labeled Meter will also clear all saved measurement screens,

MIN MAX screens, peak screens, and recording records. The

Meter’s clock is reset to a default value as well.

Setting Display Contrast

Meter display contrast can be adjusted through the Meter’s setup

menu. Open the setup menu by pressing the softkey labeled

Setup and position the menu selector next to the menu item

labeled Contrast. Pressing the softkey labeled + (F1) increases

display contrast, while the softkey labeled – (F2) decreases

contrast.

Contrast can also be set through the 7 and 8 buttons when not

being used to move between menu selections.

Setting the Meter’s Language

The Meter comes from the factory with the display language set

to English. To select another language, open the setup menu by

pressing the softkey labeled Setup. Move the menu selector next

to the menu item labeled Display. Next, press the softkey

labeled Format (F2) to open the format menu. If not already

selected, move the menu selector to the left of the menu item

labeled Language and press the softkey labeled Edit. The

currently selected language becomes highlighted and f appears

to the right of the language. Use 7 and 8 to scroll through the

available languages, then press the softkey labeled OK to set the

Meter’s display language. Press the softkey labeled Close to

return to normal Meter operation.

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Fluke 289 Seite 57

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