Electrical Guidelines; Ground Polarity; Recommended Clear Ventilation Area Around The Lxn 500 - Motorola LXN 500 Installation, Configuration And Operations Manual

MN003563A01-B
Vehicle Installation

Recommended Clear Ventilation Area Around the LXN 500

Figure 3-3

Electrical Guidelines

The power range requirement for operating the LXN 500 is 9 to 33VDC. The maximal power
consumption of the LXN 500 is 70 Watts.
The LXN 500 is installed in a vehicle with a negative-ground electrical system.
CAUTION
DO NOT install the
Be sure that the vehicle's electrical system is in good condition. Faults in the alternator and ignition
system can be a source of severe Radio Frequency Interference (RFI) and can result in LXN 500 system
operating problems. Correct any problems in the alternator output, ignition system, and battery condition
before beginning the installation.
The vehicle must have an alternator that can produce a high-current output at low speed (below 18
m.p.h. or 29 km/h) and in an idle state. It also needs the highest rated heavy-duty battery available for
the vehicle.
If used, the input power cable of the Optional Power Protection and Back-up Unit must be directly
connected to the (+) terminal of car battery and the (-) to the car chassis (See

Ground Polarity

The LXN 500 system will only operate in negative ground electrical systems. Check the ground polarity
of the vehicle before starting the LXN 500 system installation to verify that the polarity is correct.
Accidentally reversing the polarity will not damage the LXN 500, but will cause the fuse of the power
cable to blow.
Due to advanced vehicle assembly techniques, different parts of the vehicle chassis may not be
connected to the battery negative terminal. Connecting the ground leads of several devices with a
common power supply at different locations on the chassis, may cause GROUND potential differences
between these locations and damage the LXN 500 system or any other installed equipment.
FIRST CHECK that the vehicle chassis point to which you are about to connect the negative lead is
properly connected to the battery negative terminal. If the chassis is not properly grounded, connect the
negative lead directly to the battery's negative terminal.
52
Clear 1.2" (30 mm)
Ab
SOLUTIONS
in a vehicle with a positive-ground electrical system.
LXN 500
LXN 500
Figure 3-6).
Send Feedback