Pre-Alert Timer - Motorola APX4000 XH User Manual

1 The radio senses the Man Down condition and
Pre-Alert Timer is initiated.
2 Man Down condition continues for the time
duration defined in the Pre-Alert Timer field. At the
end of this time, the radio alerts the user on the
Man Down status with an audible alert tone and
Man-Down text on the screen. The Post-Alert Timer
also initiates at this point.
3 Man Down condition continues for the time
duration defined in the Post-Alert Timer field. Once
the timer expires, the Emergency alarm is
transmitted. The Man Down Clear function is used
in this phase to cancel the Man Down condition.
The following scenarios affect the timers:
• Pressing the PTT button suspends the Man Down
timers; releasing the PTT button re-initiates the

Pre-Alert Timer.

• Pressing other buttons on the radio does not
impact these timers.
• Repositioning the radio exits the Man Down
feature, which stops and resets the timers.
• Pressing a preprogrammed Clear button or
pressing a Menu Select button preprogrammed
for Clear stops and resets the timers. The timers
do not restart until the radio is repositioned.
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English
Note
Emergency must be set up for this feature to
operate. For details on operating the
Emergency alerts, please see
Operation on page 83.
If the radio is preprogrammed to horizontal
only, it must be worn in a vertical position
otherwise the Man Down alert may be
inadvertently triggered.
When the radio is programmed with Man
Down feature, special care is required when
charging the radio with a wall mounted
charger. See
Radio on page 166 for details.
Pre-Alert Timer
This timer sets the amount of time that a Man Down
condition must be present before the radio-user is
warned of the Man Down condition.
When the radio detects that it has returned to the
vertical position or when the radio detects motion, the
Pre-Alert timer stops and is reset.
The Pre-Alert timer reinitiates when the radio detects
it is in the horizontal position or motionless again.
Emergency
Proper Ways to Handle the