Motorola ASTRO Digital Spectra Manual de instalação - Página 23
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Receiver Control Power
Lead (Green)
Ignition Cable (for
Remote A3 Control
Heads and Dash
Mount Radios)
Alternator Whine
Suppressor
Installation
Antenna Installation
Selecting an Antenna
Site/Location on a Metal
Body Vehicle
Connect the green lead to the positive battery terminal (recommended) or
the ignition switch (see Figure 8). When alternator whine or interference is
a problem, Figure 13 shows an alternate power control isolation method of
wiring the green lead.
For radio ON/OFF control independent of the ignition switch, connect the
red ignition switch (pin 5 of accessory connector) to "battery hot" at the
vehicle fuse block.
For radio ON/OFF control via the ignition switch, connect the red ignition
cable to "ignition" at the fuse block.
For other considerations when connecting the ignition cable, see the
service manual.
Occasionally, an installation may have an objectionable high level of
alternator whine. This may be due to the age and condition of the vehicle's
battery, alternator, or wiring. Filters, switching relays and special cables
are available to reduce the problem. Figure 13 shows an alternate power
control isolation method of wiring the green lead (used when alternator
whine or interference is a problem).
IMPORTANT NOTE: To
NOTE:
For mobile radios with rated power of 7 watts or less, the
only installation restrictions are to use only Motorola
approved antennas and install the antenna externally on
metal body vehicles. For mobile radios with rated power
greater than 7 Watts, always adhere to all the guidelines
and restrictions in the section below.
1. External Installation–Check the requirements of the antenna supplier
and install the vehicle antenna external to a metal body vehicle in
accordance with those requirements.
2. Roof Top–For optimum performance and compliance with RF Energy
Safety Standards, mount the antenna in the center of the roof.
3. Trunk Lid–On some vehicles with clearly defined, flat trunk lids, the
antennas of some radio models (see restrictions below) can also be
mounted on the center area of the trunk lid. For vehicles without
clearly defined, flat trunk lids (such as hatchback autos, sport utility
vehicles, and pick-up trucks), mount the antenna in the center of the
roof.
assure
optimum
compliance with RF Energy Safety standards,
these antenna installation guidelines and
instructions are limited to metal-body vehicles
with appropriate ground planes and take into
account the potential exposure of back seat
passengers and bystanders outside the
vehicle.
performance
and
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