EPIRB1 User Manual
912S-01365 v01.22 11 01/06/23
! Because the test transmits a short burst on the aircraft distress frequency
of 121.5MHz, please only carry out this test in the first five minutes of each
hour.
! It is recommended to test your EPIRB once a month.
! The amber test result indicates the battery has been used for over one
hour or the allowed number of tests has been exceeded. The EPIRB will
still operate normally in distress, but the battery should be replaced to
ensure the full operating life when your EPIRB is needed.
5.2 GPS Test
! As testing the GPS receiver expends significant amounts of battery
energy, do not test the GPS operation more than once a year. Testing the
GPS receiver is limited to 12 tests over the lifetime of the battery, after
this the GPS test will fail to activate.
! This test must only be performed where the EPIRB 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 TEST key. The LED will illuminate red to indicate the key has
been pressed, then start flashing. After approximately ten seconds the LED will
cease flashing and become a steady red light. The TEST key can now be released.
Note: If the TEST key is released before ten seconds, the EPIRB will enter the self
test mode.
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 green LED flash-
ing. The number of green flashes indicates one more than the number of GPS tests
remaining (eg 8 flashes = 7 tests remaining). The unit automatically turns off after
the test indication.
If after five minutes the GPS receiver has not received a position, a failure will be
indicated by the red LED flashing after which the unit will turn off.
The test can be ended at any time by holding the ON key for one second or by hold-
ing the TEST key for five seconds.
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