Routine Scan] - Furuno FS-1575 Service Manual

4.4.5 [5. ROUTINE SCAN]

This sub-menu is used to make setting of DSC ROUTINE SCAN frequency.
DSC SCAN frequencies are received with the WR2 board (Option board) or the RX
board of the transceiver unit if no WR2 board is built in. Select DSC scanning
frequencies from listed in INTL, LOCAL1, LOCAL2, and DIST frequencies as well as
DSC FREQ registered on the USER CH window. Unless otherwise user requested, it is
common to select the INTL frequency.
It is unable to set all scanning frequencies to OFF.
Reference)
1) DSC ACK BQ messages are received with the RX board regardless of PRIORITY
condition; provided, however, that ACK BQ messages to DISTRESS RELAY
INDIVIDUAL messages are received with the WR1 watch receiver.
• RX board:
This board receives all DSC ACK BQ messages except those to DISTRESS
RELAY INDIVIDUAL messages. Frequencies to be set are DSC
communication frequencies of currently-activated procedure that is "WAIT
FOR ACK."
• WR1:
The WR1 watch receiver constantly scans and receives DSC Distress/Safety
frequencies. However, only if DISTRESS RELAY INDIVIDUAL messages are
transmitted and the DSC procedure is activated, the WR1 makes setting of DSC
communication frequency in order to receive the ACK BQ massages, and stops
scanning.
Reference)
Selecting [MENU] -> 9.SERVICE -> 5.TEST -> 4.TA TEST allows for
stopping DISTRESS SCAN.
• WR2:
The WR2 watch receiver scans and receives DSC frequency specified by the
ROUTINE scanning table. To stop scanning, press the [SCAN] key.
Turning the [ENTER] knob allows for the selection of scanning frequency
being stopped.
CONFIDENTIAL (internal use only)
This confidential document is used only by FURUNO authorized persons.
It is strictly prohibited to reproduce the document in whole or in part without prior written permission of FURUNO.
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4.4 DSC