Seiwa Si-Tex MDA3 - Manual (Page 10)

Installation
Page 7
In addition to the items provided with your AIS antenna splitter the following items will be required for installation:
VHF antenna
Connection to a suitable VHF antenna will be required for the AIS antenna splitter to operate. A standard marine band VHF antenna
such as that used with VHF voice radios will be sufficient. Please take note of the warnings in section 1 regarding the use of antennas.
VHF radio
If you have an existing VHF voice radio connected directly to a VHF antenna, you can disconnect the VHF radio from the VHF antenna
and connect them both to the relevant connectors on the AIS antenna splitter.
AIS transceiver
If you have an existing AIS transceiver connected directly to a VHF antenna, you can disconnect the AIS transceiver from the VHF
antenna and connect them both to the relevant connectors on the AIS antenna splitter.
It is necessary to connect the VHF antenna, VHF radio and AIS transceiver for the antenna splitter to function correctly.
FM radio
The AIS antenna splitter also provides connections for the antenna of an FM broadcast radio receiver. Connection of an FM radio is
optional.
Power cable
The AIS antenna splitter is supplied with a two meter long power cable. If you require longer cables to reach your power supply please
ensure the cables are capable of carrying currents of up to 200mA on average. Means of connecting the cables together will also be
required. The use of Scotchlok
TM connectors is recommended for this purpose.
3.2 Installation procedures
Before beginning installation of your AIS antenna splitter, please ensure you have the necessary additional items as detailed in section
3.1. It is strongly recommended that you read all of the instructions in this manual prior to installation.
If after reading this manual you are unsure about any element of the installation process please contact your dealer for advice.
The following sections explain the installation process step by step for each of the main elements of the system.
Step 1 - Installing the AIS antenna splitter
Please note the following guidelines when selecting a location for your AIS antenna splitter:
•
The AIS antenna splitter must be fitted in a location where it is at least 0.5m from a compass or any magnetic device.
• There should be adequate space around the AIS antenna splitter for routing of cables. See Figure 4 for details of the AIS antenna
splitter dimensions.
• The ambient temperature around the AIS antenna splitter should be maintained between -25°C and +55°C.
• The AIS antenna splitter should not be located in a flammable or hazardous atmosphere such as in an engine room or near to fuel
tanks.