PLB1 USER MANUAL
10
912S-01260 v02.21
10/08/2022
4.2
GPS Test
!
As testing the GPS Receiver expends significant amounts of battery energy do not test
the GPS operation more than once year. Testing the GPS receiver is limited to 10 tests
over the lifetime of the battery, after this the GPS test will fail to activate.
!
This test must only be performed where the PLB has a clear and unobstructed view of
the sky. This is required to allow the GPS receiver to acquire a signal from sufficient
satellites to allow it to determine a position. Make sure the area marked "GPS Antenna"
is not obstructed.
Press and hold the
key. The LED will illuminate red to indicate the key has been pressed, then
start flashing. Shortly after, the LED will cease flashing and become a steady red light. The
key can
now be released.
During the GPS test the LED will repeat a long red flash followed by a short green flash until either a
position fix is obtained or the GPS test fails. A successful test will be indicated by the strobe flashing
and the LED flashing green. The number of green flashes indicates one more than the number of GPS
tests remaining (eg. 8 flashes = 7 tests remaining). A failure is indicated by the LED flashing red. The
test can be ended by holding the
key for five seconds.
4.3
Special note for Commercial and DoD Users
Should it not be possible to maintain the suggested test schedules, the interval for the two tests
detailed above is:
Recommended:
Section 4.1 Beacon Test: 6 monthly
Required:
Section 4.1 Beacon Test: Annually
Section 4.2 GPS Test:
Annually
