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1. OPERATIONAL OVERVIEW
1-5
1. Press the SCAN key to show the DSC scan screen. Scanning starts. When re-
ceiving the appropriate frequency signal, the scanning stops, and the frequency
is highlighted and flashes.
2. Press the SCAN key again to stop scanning the routine frequencies.
Note: You can not stop the scanning manually for the distress alert.
3. Rotate the ENTER knob to move the cursor to the desired routine frequency which
you want to watch. You can scan only the frequency selected by cursor.
4. Press the SCAN key to restart the scanning.
Note: When scanning starts, the active session (refer to section 1.11) is automatically
put on hold.
1.8 How to Set the Auto Acknowledgement
Individual, PSTN (public switched telephone network), position, polling and test calls
can be acknowledged automatically or manually. This is set on the [ACK SETTINGS]
in the [DSC] menu (see section 6.17).
Note: When own ship's communication is high priority, set to manual acknowledge-
ment.
The auto acknowledgement is not sent in the following cases:
• Other session is active (except individual call).
• There are RT or DSC sessions (for individual call).
• Channel is in use.
• ECC is NG (No Good).
Note: The auto acknowledgement for the individual call is sent only when the pro-
posed channel or communication mode is not available.
1.9 Control Unit Priority
If you operate the No.1 control unit while the No.2 control unit is being operated, the
right to operate is shifted to the No.1 control unit. The control unit not having priority
shows the following:
• The unit name currently in use: No.1 control unit, No.2 control unit or NBDP
• The ongoing operation: COMPOSING DSC MESSAGE, OPERATION, COMMUNI-
CATION
The control unit which you operate has priority in the following conditions:
• The handset goes OFF HOOK.
• Display the menus or setting windows.
• Display each function screen (for example, Log).
• Press a key or rotate a knob. (The priority is lost after four seconds.)
• NBDP is communicating.