GME MT600GAUS - Manual (Page 14)

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NOTE: Once the GPS test has started, you can terminate the test at any time by briefly
pressing the ‘TEST’ button.
TO TEST THE GPS
1. Remove the EPIRB from the bracket. (Refer to page 7).
2. Ensure you are outside with good visibility of the open sky above.
3. Keep the antenna well clear of metallic objects during testing.
4. Lift the yellow cover marked ‘LIFT’.
5. Press and hold the yellow ‘Test’ button until the green LED flashes, then release
the button within 2 seconds.
6. The beacon will now attempt to acquire a GPS position. During this time the green
LED will flash at one second intervals accompanied by double beeps.
The time taken to acquire a position will vary depending on the number and location
of satellites present in your location. Under normal conditions, acquisition should take
around 30 to 40 seconds, however it is possible for it to take several minutes. Note
that distress signals are not radiated as part of this test.
a. If a GPS position is successfully acquired, the beacon will emit a 3 tone musical
‘chime’ and the green LED will flash 8 times. It will then send a brief ‘TEST’
transmission containing the GPS coordinates. The ‘TEST’ transmission is safe
and will not trigger a search.
b. If a GPS position cannot be acquired within 2 minutes, the beacon will emit 8 beeps
and the red LED will flash 8 times. This may indicate a fault with the EPIRB’s GPS
receiver system and you should contact GME service department for advice.
7. Once GPS testing is completed, close the switch cover and press firmly into place
until it clicks.
8. Return the beacon to its bracket.
IMPORTANT: DO NOT over-test. GPS testing consumes additional battery power.
To conserve the battery the EPIRB will only allow a total of 12 GPS tests during its
lifetime.
• If the available GPS test count is approaching the limit, both red and green LEDs
will give a double flash accompanied by a double beep during the GPS
acquisition period.
• If the available GPS test count expires, any further attempts to perform a GPS test
will result a single red LED flash accompanied by a low beep and the test will not
start. As long as the GPS is tested at the recommended average of once per year,
the test count should not expire during the lifetime of the beacon.