User Manual

27
NOTE
Shipped from the factory, the Power Button will need to be
pressed a first time. It can then be configured to function in
other ways. In most cases, the particular way is established
during radio installation. The possibilities are:
A. Turn the radio on and off by pressing the button.
B. The button is disabled and the radio is turned on and
off power with the vehicle’s ignition key/switch.
C. The button is disabled and the radio is turned on and
off with a panel or dash-mounted switch (e.g., a toggle
switch). Radio on/off power control is completely
independent of the vehicle’s ignition key/switch. This
configuration is not recommended. If the radio is
installed in this manner, it should be used with caution,
as excessive battery drain can occur if the radio is left
on for an extended period when the vehicle’s engine is
not running.
D. A combination of power button control and ignition
key/switch on/off power control (i.e., much like a
standard car radio). For example, when the radio is
turned off using the power button prior to turning the
vehicle off using the ignition switch/key, it will not
automatically turn back on when the vehicle is re-
started. However, if the radio is left on when the
vehicle is turned off, it will turn on and off with the
vehicle’s ignition key/switch. Unlike a standard car
radio, and for public safety purposes, it is possible to
turn the radio on while the vehicle is turned off.
E. A setting can be changed to adjust the amount of time
it takes for the radio to turn off to help prevent
accidental press of the power button from turning the
radio off. For example, a setting of two (2) seconds
will require the power button be pressed and held for
two seconds to turn the radio off. This feature is only
available for the on-to-off transition.
F. In multiple control head installations, the radio powers
up when the first control head is turned on, and it
powers down when the last control head is turned off.
The radio has a power-off timer that, if enabled,
automatically turns the radio (and control heads, if any) off
after a period of no use (i.e., lack of button presses, voice or
data transmissions, etc.) The timer’s period is pre-
programmed by the system or network administration
personnel. Incoming voice traffic is not considered; in other
words, these calls do not reset the automatic power-off
timer.