Atlas PT Technical Manual
10
4.1
Buttons
Power
Press this button to turn the power on. Press and hold it for two seconds to turn the
power off.
The ATLAS PT
can be configured to disable the ability to power off via the power button
(see the POWER command). This can also be achieved over-the-air.
Alert
Press this button to generate an alert. Press and hold it for two seconds to generate a
Critical Alert. Press and hold it for more than 5 seconds to clear all wearer-initiated
alert conditions.
Alerts may be acknowledged over-the-air or via a serial connection. See the command
section for more details. Alerts have many configurable parameters. See the
ALERTCAN and ALERTLEVELS command.
4.2
LEDs
The status LEDs visually show the current status of the radio.
Status LED
This LED is green for two seconds when first powered on. For the first ten minutes of
operation, the LED indicates GPS lock and carrier detect status, in the following
manner:
Flashing Orange
– Looking for GPS lock
Red Blink
– Transmitting position
Green
– GPS lock attained and carrier detected
Off
– GPS lock attained; no carrier detected
After ten minutes of operation, this LED is off. If the power button is pressed briefly, the
status LED will operate as above for five seconds.
Power LED
If the there is a charger plugged into the Atlas SM, the Power LED will blink green
shortly every three seconds to indicate that the unit is working. If no charger is plugged
in, the Power LED is off. The ATLAS PT
has many power savings options which may
modify the operation of the Power LED. See the section on battery and power saving for
more information.
