Special Considerations For Emergencies; Impact Detection - Motorola APX 4500Li User Manual

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Special Considerations for
Emergencies
If you press the emergency button while in a channel
that has no emergency capability, a low-pitched tone
sounds.
If the unit is out of the range of the system and/or the
emergency alarm is not acknowledged, a tone sounds
and the display shows No acknowledge.
If you press the emergency button, then change to a
mode that has no emergency capability, the display
shows No emergency and a continuous low-pitched
tone sounds until a valid emergency mode is selected or
until the emergency is cancelled.
When an emergency is active, changing to another
mode where emergency is enabled (trunked or
conventional) causes an emergency alarm and/or
emergency call to be active on the new mode.

Impact Detection

This feature allows radio to detect the force of gravity
impact or the orientation changes on the vehicle in the
event of vehicle crash or rollover.
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When these events are detected, radio activates the
Emergency feature. This feature also sends out the
location-based information if GPS feature is enabled.
Radio automatically activates Impact Detected condition
when the impact event meets or exceeds a predefined
threshold. The radio must stay in this condition for a
preprogrammed amount of time before the Emergency
Alarm or Call is activated.
In the event of hardware failure or malfunction, radio
alternatively displays Impact HW and Error and a tone
sounds when the radio power-up. Any button press of the
radio or accessory except the programmed button for
volume and backlighting functionality ceases the error
message and sound.
The following scenarios affects the Emergency feature
activation:
Pressing a preprogrammed Emergency button cancels
the Impact Detection sequence and enters the
Emergency mode.
Pressing the PTT button does not suspend the Impact
Detection sequence.
Pressing the PTT button, the Clr menu button or the
preprogrammed Clear button when radio displays the

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