User's Guide

Advanced Features
English
69
The Man Down feature has three phases:
i The radio senses the Man Down condition and Pre-Alert
Timer is initiated.
ii 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.
iii 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 reinitiates 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.
Note: Emergency must be set up for this feature to operate.
For details on operating the Emergency alerts, please
see Emergency Operation on page 65.
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 Handling
Your Radio on page 129 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.
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