3 Functions
3.1 Electrical
3.1.1 Power requirements
The unit shall be powered from 24 VDC +30% / -10%. The master panel
will provide power to the microphone unit and slave panels.
Type Minimum Nominal Maximum Unit
Voltage Supply 21.6 24 31.2 VDC
Current Load
- Master & Mic
- 190 200 mA
Current Load
including
1 Slave
- 260 270 mA
3.1.2 Relay outputs
The following outputs are provided:
● One relay output per direction LED.
- Activated simultaneously with the diodes on the panel.
- NC logic.
- Possibility for power out 24VDC.
● One system status relay.
- Normally closed when system is fully operational.
3.2 Mute Input Typhoon/Foghorn
This mute input will be connected to the ship’s typhoon/foghorn in order
to hinder the typhoon/foghorn from being sounded on the speaker and
trigger LEDs.
3.3 Mute Input Public Address
This mute input will disconnect the VSS microphones when public
address messages are broadcasted.
3.4 Audio Interface
This is an external audio interface. It is possible to adjust audio volume
by a potentiometer.
.
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