Key Click]; Off Hook Sp] - Furuno FS-1575 Service Manual

4.5.1 [1. KEY CLICK]

This submenu is used to make setting of key clicking sound levels except for that of the
[DISTRESS] key.
• When key input is enabled: Pi (2000 Hz/50 ms, Silent/50 ms) × once
• When key input is disabled: Pi-Pi (2000 Hz/50 ms, Silent/50 ms) × twice

4.5.2 [2. OFF HOOK SP]

This submenu is used to make setting to detect whether the handset is set to ON-HOOK
or OFF-HOOK and turn ON or OFF the AF signal outputted to internal and external
speakers. The handset setting is detected by the use of a hall element mounted to the
handset.
The AF signal is used to control U6 (AF AMP) on the C-IF board of FS-2575C. (AMP
MUTE-2)
• MUTE: Turns OFF the speaker when the handset is set to OFF-HOOK and turns
it ON when the handset is set to ON-HOOK.
• SP ON: Keeps the speaker ON regardless of whether the handset is set to ON- or
OFF-HOOK.
The speaker also turns ON for Full-duplex communication with FS-5075.
If this causes any problem such as the penetration of receiving signal in
the microphone, set the submenu "OFF HOOK SP" to "MUTE."
Reference)
1) DSC ACK operation varies whether the handset is set to ON-HOOK or
OFF-HOOK. For AUTO ACK operation, refer to information on page 4-37.
2) Monitor output of SCAN frequencies follows the setting of the submenu "OFF
HOOK SP."
For details, refer to information on page 4-42.
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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4.5 AUDIO