User Manual

5
Switching off an active PLB
Press and hold the OFF button for a minimum of 5 seconds until the indicator lights go
off.
Emergency Operation with GPS
When the PLB is first activated the inbuilt GPS receiver will attempt to acquire a fix.
Once a GPS position fix is acquired the GREEN indicator light will start to
flash once every 3.5 seconds in sequence with the red indicator light.
GREEN and RED indicator lights ‘long flash’ in sequence once every
50 seconds to indicate each 406 MHz transmission containing a valid
GPS position.
After 4 hours without a valid GPS position fix the GREEN light will go
out completely.
Activation
button
Green light
flashes when
GPS position
is good
Red light
- 50 seconds -
- 3.5 seconds -
- 3.5 seconds -
- 50 seconds -
- 50 seconds -
GPS position acquired
Transmission with valid GPS position
GPS position lost
Self-test/OFF
button
GPS PLB controls
Even without GPS the PLB transmits approx. every 50 seconds
so low-earth orbit satellites can ‘triangulate’ your position