Raymarine Ray 53 User Manual page 21

Channel Display(Large) is representative of the MMSI number itself and Channel
Display(Small) is representative of the position in the 9 digit.
-. When the Channel Selection knob is rotated, Channel Display(Large) shows the
MMSI number is increased/decreased as "0" base.( 0 to 9 can be selected)
-. MMSI number is selected by knob being rotated. When SCAN/MEM key(DSC key) is
pressed, the audible beep sound 1 is heard and the selected number can be
memorized.("2" is displayed at Channel Display on the LCD, which means that 2
(second) digit, is ready to be input. And the rest of the digits are entered in the same
manner.
-. Once all of the digits have been entered, the unit will redisplay ID numbers
every 1 second.
-. If the number was entered incorrectly, the customer can perform the entry again by
pressing and releasing SCAN/MEM key(DSC key). At that time "0" is displayed at
Channel Display(Large) and "1" is displayed at Channel Display(Small).
4. Entry of number is done by Channel Selection knob. UP/DOWN key on the
Microphone does not enter the number.
5. If the number is entered correctly, the entered number becomes "Other Ship's
Number" by pressing SCAN/MEM key(DSC key) for 2 seconds and the audible beep
sound 1 is heard.
The stored data can be memorized only by SCAN/MEM key(DSC key).
The stored data cannot be memorized by the other key operations and cannot be done
when the power is turned off on the way.
6. After entry of "Other Ship's number", Other Ship's Channel Number is ready to be
entered.
--- "--- ---" is displayed at Channel Display(Large) which means Channel number
is ready to be entered.
--- "W" is displayed at Channel Display(Small) which means the working channel
is to be selected.
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