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Introduction
...
This manual will outline the procedures necessary for operating the Whelen Messenger Display
with the Messenger Control Head (model MGC02). This guide should be read thoroughly so that
the operator will understand all of the functional aspects of the device and be able to immediately
generate desired messages during emergency situations.
Section I:
The MGC02 Controls
The MGC02 is comprised of an LCD display window and sixteen soft-touch buttons involving
control options, scrolling keys and a punch-in keypad.
These buttons perform the following functions:
ON
-
The ON button activates the MGC02 and prepares the system for message
display. This button is also used to turn the MGC02 off.
POS (Position)
-
In a vehicle with both a front and rear facing Messenger display, the POS
button’s primary function is to specify which display will generate the
desired message. In a vehicle with a single Messenger display, the POS
button activates the “Last Message” feature (see Section III for a detailed
explanation of this feature).
CLR (Clear)
-
Pressing the Clear button selects a “Blank Screen” message to be the next
message displayed. If the Display button is immediately pressed, the
message currently being displayed will be terminated and replaced with
the “Blank Screen” message.
DSP (Display)
-
When the DSP button is pressed, the selected message is displayed.
“UP” Arrow
-
When in the Select mode, this button scrolls up through the list of
available messages. While scrolling, the name of each message will
appear in the Display Window. When the desired message is shown in this
window, press the DSP button to generate it on the Messenger display.
“Down” Arrow
-
When in the Select mode, this button scrolls down through the list of
available messages. While scrolling, the name of each message will
appear in the Display Window. When the desired message is shown in this
window, press the DSP button to generate it on the Messenger display.
ON
POS
CLR
DSP
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7
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Whelen
Eng.Co.
Display Window
“Up” Arrow
“Down” Arrow
On
Position Clear Display