Operating The PM295 31
The instrument keypad consists of four membrane long-life push-buttons allowing
the user to perform all of the front panel functions. The following descriptions detail
the keys and their functions in operational mode.
UP ARROW t Scrolls display pages forward
DOWN ARROW u Scrolls display pages backward
SELECT Enters programming mode
ENTER Toggles the display between main and subpage level
When a key is pressed, it is entered into a key register, which may be polled through
communications.
3.2.2 Selecting a Display Page
The instrument provides a total of 55 display pages, which can be accessed on the
two display levels: six pages on the main level, and the remaining pages - on the
sub-page level. The active page number is indicated on the display. It illuminates
continuously when you are on the main level, and flashes when you enter the sub-
page level. At power up, the instrument always returns to the page that was last
displayed.
To scroll through pages on either level:
Ä Press the up arrow key to scroll forward.
Ä Press the down arrow key to scroll backward.
To enter the subpage level:
Ä Press ENTER.
To return to the main level:
Ä Press ENTER once more.
3.2.3 Display Formats
Appendix A specifies all of the pages available for operational mode. Each page is
listed with a corresponding front panel display.
The display illustrations indicate the measurement data that can be viewed on a
corresponding display page, and the abbreviated window labels and page numbers
that appear on display exactly as indicated in illustrations. The measurement data is
indicated using a plain style, and the window labels and page numbers are accented
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