3. ELT Maintenance Self-Test:
To perform ELT Maintenance Self-Test: Use command “ 05 ”
Figure 6: Maintenance Self-Test
Maintenance Test includes the following tests:
VHF: PLL locked PLL locked in F3 or F1 or F2 at fault (9 flashes)
VHF: Power output level F1/F2 VHF RF power level < 17 dBm @ 121.5/243 MHz
(7 flashes)
F3: PLL locked PLL locked in F3 or F1 or F2 at fault (9 flashes)
F3: Power output level F3 RF power level < 33 dBm @ 406.028 MHz (5 flashes)
Internal 3V3 Vcc supplies for F3, F2, or F1 at fault (4 flashes)
Internal 5V VHF Vcc supplies for F3, F2, or F1 at fault (4 flashes)
Internal 7V3 406 Vcc supplies for F3, F2, or F1 at fault (4 flashes)
Internal LDO status Internal Data stored in Memory at fault (1 flash)
Battery level Battery voltage is low < Useful Life Battery Voltage setting (3 flashes)
EEPROM: Distress ID stored in Memory at fault (2 flashes)
EEPROM: Distress config stored in Memory at fault (2 flashes)
Test results will display as follows:
OK: Tests pass
KO: Tests fail
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