User's Manual

FP300RA User Manual
2140-72018-00-0A REV: A Page 16 Of 38
2.3 Installation Guidelines
The FP-300RA is intended for installation in protected cabinets that prevent direct exposure to
sun radiation, rain, dust and dirt. It does not require forced air cooling.
The following sections provide additional information needed for successful utilization of the
FP-300RA.
2.3.1 Power Requirements
The FP-300RA operates on 8 to 30 VDC, and its maximum power drain is 5W. A suitable
power source must be provided as part of the installation.
Separate power supply lines should be routed to each FP-300RA unit.
The FP-300RA does not have an ON/OFF power switch, and will start operating as soon as
power is connected. Therefore, it is recommended to install a circuit breaker, which will also
serve as an ON/OFF switch, to protect the supply line of each FP-300RA.
2.3.2 Antennas
The type of antenna to be used with the FP-300RA is generally determined by the FP-300RA
application and communication zone requirements.
In most installations, two types of antenna are used:
• For wide communication zone applications, a wide beam antenna is
recommended. The antenna can be mounted above the lane or beside the road.
• For narrow communication zones, where lane-to-lane and/or cross-lane
discrimination is required, a narrow beam antenna can be used. This antenna must
be mounted over the center of the lane.
For either type of antenna, the positioning of the antenna must be carefully set to achieve the
required communication zone pattern. For installations subject to external interference, lower
gain antennas can be used.
Contact Telematics Wireless if you need help in selecting suitable antennas.
Note:
The antenna (ANT) connectors of the FP-300RA must always be terminated
in matched (50Ω) loads. Connect 50Ω loads with minimal rating of 1W to any
FP-300RA ANT connector not connected to an antenna.
When the installation procedures call for connecting RF cables to the
FP-300RA antenna connectors before the corresponding antennas are
installed, connect the loads at the antenna ends of the cables.