-8-
Operation
GENERAL
This unit is designed for easy operation
under the stress associated with operating
a motor vehicle. All of the functions are
located right on the hand-held controller
and are easily accessible.
POWER
In order for the unit to function, the
Rotary Thumbwheel On/Off/Volume
switch must be in turned ON by rotating
it counter-clockwise. When turned on,
the Rotary Thumbwheel can also be used
to set the volume level of the PA.
HORN (Air Horn)
This momentary push-button switch provides a simulated air-horn tone while
pressed. This can be used to either replace, or to supplement the normal vehicle
horn and is useful at intersections or in high noise areas. This tone can be changed
to an alternate “flatter” tone during installation. (Refer to
Installer Selectable
Options
section for jumper details). The activation of the Air Horn may also be
triggered by your Horn Ring switch through the Green wire. (Refer to the
Installer
Selectable Options
section for jumper settings and the
Wiring Connections
sections for details on hooking up the Green wire.)
PA
The attached noise-canceling microphone is used for public address operation when
its push-to-talk button on the side is pressed. You can set the PA volume to a level
appropriate to the situation using the Rotary Thumbwheel.
LIGHT CONTROL
The red button on the side of the microphone can be used to activate a warning
light. Simply press the button to activate your light, and press it again to deactivate
the light.
RADIO REPEAT
This optional function amplifies a radio input for re-broadcast outside the vehicle.
Press the button to activate the radio Repeat, and press it again to deactivate it. To
use this feature, you must de-activate the Light Control feature. (Refer to
Installer
Selectable Options
section for jumper details).
LED INDICATORS
There-are two LED indicators on the front of the
control head (microphone). The
POWER
indicator
will light whenever the Rotary Thumbwheel is
turned on. The
AUX
indicator will light whenever
you activate your external warning light or the Radio
Repeat feature.
