Mounting Page 7
Document id: 7000 108-011 A2
The R4 Display is designed to operate on 24 volts DC. To avoid
power and voltage drops in the feed line it is important that sufficient
size of cable is used.
Install according to section 2.7.1.
2.2 R4 Transponder Unit
2.2.1 Location
When mounting the R4 Transponder please consider the following:
• Mount the unit on a wall or on top of a bench
• The temperature and humidity should be moderate and stable,
+15ºC to +35ºC.
(Operating temperature: -15ºC to +55ºC.)
• Select a location away from excessive heat sources
• Avoid areas where there are a high flow of humid salt air
• Avoid high levels of vibrations and shocks.
• Ensure that there is enough airflow to avoid high ambient
temperatures.
• The unit can affect magnetic compasses. Use a minimum of
0,2 m to nearest magnetic compass.
• Install the R4 Transponder as close as possible to VHF/GPS
antennas to minimise cable lengths.
2.2.2 Clearance area
Leave a clearance around the R4 Transponder to facilitate service
and installation. See recommended clearance area in section 2.11.
2.2.3 Physical mounting measurements
See section 2.11.
2.2.4 Cabling
Use the cables included, one power supply and one for data cable for
connection to interfacing equipment such as Display, sensors, etc.
For wiring details, see section 2.7.2.
Connect the VHF and GPS antennas to the R4 Transponder.
2.2.5 Power Supply
The R4 Transponder shall be connected to an emergency power
source. If connected to a battery, power calculations must be made
for the battery capacity. For power consumption, see section 3.1.
The R4 Transponder is designed to operate on 24 volts DC. The
nominal power used is 16W in receiving mode and maximum power
needed is approx. 55 Watts while transmitting. The R4 Transponder
shall be externally fused (slow blow fuse) with a 4 Amperes fuse. To
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