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Note Clarification of the notes in Connection Diagram: (Figure 6: Wiring Schematic on page 11).
1. Refer Cable and Connection Diagrams regarding supply of cables. The cable must be shielded with individual
pairs and have a minimum 0.25mm2 core size.
2. A junction box is optional and can be supplied by Alphatron.
3. To comply with EMC requirements, all cable screens must be safely connected to chassis as shown in Figure
6: Wiring Schematic on page 11.
4. To mute signal to the Alphatron SSRA. A closing contact (NO) will mute the sound reception system while
closed. Generally, this input is used by the ship's Typhoon system.
Figure 7: Ethernet Electrical Connections
The set up for the master/slave, web interface via a computer or connection to an IEC 61161-450 network is as shown
above.
Note The cable must be a minimum of Cat. 5 S/UTP quality. Master/Slave can be connected directly together or
via a LAN switch.
1.2 Display Unit
Install the display unit in such manner that incoming sounds signals and incoming sounds can be heard at all positions
inside the bridge and are visible from the conning position.
Note Prior to fastening the unit to a console the power and microphone unit connectors must be connected,
unless the device is used as a slave device to another display unit.
12 | Installation
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