Chapter 5 About Float-free Capsule
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5.4 EPIRB Function Testing -NDH-339 In case of before complying with MSC.493(104)-
As a periodical inspection, please perform every month. There are two different kinds of tests:
1. NORMAL SELF-TEST
2. EXTENDED SELF-TEST including the GPS-test
[NOTE]
- Perform the periodic inspection, while anchoring in a port.
- What the NORMAL SELF-TEST and the EXTENDED SELF-TEST actually does is to send out
a short test signal on 121.5 and 406.037MHz, testing the output of the transmitter. While
transmitting the test signal, the battery voltage, output power and phase lock is tested.
- During the test of the 406MHz transmitter a test message is transmitted, this test message is
coded with a special synchronization code and will not be recognized as real alert by the
Cospas-Sarsat satellites.
- The EXTENDED SELF-TEST include the self-test (“5.3.1 NORMAL SELF-TEST”) and
therefore only one of them are necessary.
- The GPS-test might take up to 2 minutes to be successful. Limit this test to max. once/mouth
as this test will reduce lifetime of EPIRB battery. Number of the EXTENDED SELF-TEST is
limited to 60 for a period of 5 years.
5.4.1 NORMAL SELF-TEST
1. Release front cover by removing the cotter pin.
2. Push and hold switch in “TEST” position for 15 seconds.
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