Bendix Commercial Vehicle Systems SMARTIRE TPMS OPERATORS MANUAL - Manual (Page 41)

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Straight Trucks, Buses, OTR Vehicles
1. Dash-mounted display connects to Wireless Gateway Receiver.
2. Wireless Gateway Receiver connects to underside of vehicle.
3. Antenna at rear axle(s) connects to Wireless Gateway Receiver.
4. Sensors mount to the wheels.
6.2.1 Guidelines and Best Practices
Use the guidelines below to help select the best installation location for the Wireless Gateway
Receiver and the antenna(s). Guidelines are also provided for routing antenna cables.
Antenna Placement
DO:
 Choose a location for the antenna that is within the allowable cable length for connection
to the Wireless Gateway Receiver (e.g. 40 ft antenna cable will not reach a straight-line
point 40 ft away on a given vehicle).
 Choose a location in which the antenna whip does not contact the vehicle. The antenna
should only contact the vehicle at its mounting base.
 Orient the antenna so that it has clear line of sight to the tires. If it is pointed downward, a
minimum of 1.5 feet (46 cm) is required between the tip of the antenna and the ground. If
it is pointed upward, it can not be shielded by any metal on the underside of the vehicle.
In general, a horizontal antenna orientation along the center line of the vehicle yields the
best results.
 When placing the antenna near the front axle, choose a location that offers protection in
the driving direction e.g. if placed on the front cross member, face the antenna rearward
on the rear-most vertical side of the cross member.
 When placing an antenna near or on suspension supports, make sure there is enough
room to allow the suspension to travel to its full compression.
DO NOT:
 Do not place the antenna near large concentrations of metal e.g. steel I-beam support,
axle differentials, etc.
 Do not place antenna near large concentrations of electrical wiring, generators, amplifiers
or pre-existing transceiver assemblies (e.g. GPS/Telematics systems, CB Radio, Data
Loggers, etc).
 Do not place the antenna on or near moving parts such as steering linkages, drive shafts,
or suspension assemblies.