Distress Scan; Popup Alarm; Mic Loop Back; Iec-61162 - Furuno FS-1575 Service Manual

7. DISTRESS SCAN

This test menu is used to make setting so as to stop scanning Distress alert. Of course, it
is possible to receive the Distress alert at a frequency at which scanning was stopped.
This setting will be canceled when turning on the power again, receiving Distress alert
at the frequency at which scanning was stopped, or switching the SCAN window to any
different window.

8. POPUP ALARM

This test menu is used to make setting so as to disable an alarm to sound during a popup
message is displayed.
For example, if the PLL circuit of the RX board causes a failure, a message saying "RX
PLL UNLOCK!" will appear and an alarm will sound. Setting "POPUP ALARM" to
"OFF" will disable the alarm to sound.
This setting will be canceled when turning on the power supply again.

9. MIC LOOP BACK

This test menu is used to conduct loop-back tests on the HANDSET. Audio signals from
the HANDSET microphone are outputted to the Panel speaker and EXT speaker.
Audio signals are looped back not from the FS-xx75T unit, but within the FS-2575C
unit.
Note)
Loop-back tests are independent of "HOOK SP" and "SP OFF" settings.
This setting will be canceled when turning on the power again

10. IEC-61162

This test menu is used to conduct loop-back-tests on the IEC-61162 signal. The
IEC-61162 signal is determined to be OK when a specific command is transmitted and
it can be received.
To implement this menu, cause a short circuit between GNSS TD and RD on the T-IF
board as shown below:
• Between #1 (TD-A) and #3 (RD-A) of TB6
• Between #2 (TD-B) and #4 (RD-B) of TB6

11. ALARM UNIT

This menu is used to conduct loop-back-tests on the ALARM UNIT connection
terminals. The ALARM UNIT connection terminals are determined to be OK when a
specific command is transmitted and it can be received.
To implement this menu, cause a short circuit between IC TD and RD on the T-IF board
as shown below:
• Between #3 (IC TD-A) and #5 (IC RD-A) of TB7
• Between #4 (IC TD-B) and #6 (IC RD-B) of TB7
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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6.5 SERVICE: TEST