GMDSS Maintainer: Element 9

1. A The terminal will indicate RX2 is locked onto a signal on the Inmarsat NCSC channel.
2. B The terminal will indicate receipt of a valid frame on the Inmarsat NCSC channel.
3. C The message "RX2 Comm error" or “ACU Comm error” will be displayed.
4. D The DCE/DTE communication protocol is improperly configured.

Tip: press A-D to answer