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- Series VMM
Operation
Technical changes reserved
- 21 -
7
Operation
The display electronics are controlled through the display and the keypad.
Display:
The display electronics has an integrated back lighted, alphanumeric display with two 16-
character lines (format 0.4 x 2.0 in). Measurement data and settings can be read directly
from this display
The LCD is designed to be operated at tempera-
tures ranging from
−
4 °F to + 122 °F without be-
ing damaged.
Near freezing temperatures the display becomes
slow. The readability of the measured values is
reduced.
At temperatures below 32 °F, only static values
(parameter settings) can be displayed.
At temperatures exceeding 122 °F, contrast de-
creases substantially on the LCD and the liquid
crystals can dry out.
Keys and their functions:
There are six keys for operating and changing the settings.
CAUTION! Material damage!
Do not press these keys with sharp or sharp-
edged objects such as pencils or screwdrivers!
Cursor keys:
These keys are used for
•
change numerical values.
•
give YES/NO answers.
•
select parameters.
Each key is assigned a symbol as follows:
Cursor key, right arrow;
Cursor key, left arrow;
Cursor key, up arrow;
Cursor key, down arrow.
ENTER key:
The ENTER key is used for entering the parameter level from the menu level.
All entries are confirmed with the ENTER key.
ESC key:
The ESC key is used to cancel the current action and leads to the next higher lev-
el. This is used for rollback.
Pressing ESC key twice moves you directly to the MEASURED VALUES functional
class.
