Dipole Antenna Installation
56
750.001.003
Revised June 1999
© 1999 AXCESS
TM
Inc.
Installing the Dipole Antenna
IMPORTANT!
Before permanently mounting the Dipole Antenna, lay
out and test the entire NT132 system.
Installation Guidelines
The length of the coaxial cable between the Dipole Antenna and the
ATU should not exceed
20 feet
.
The Dipole Antenna should be mounted:
•
Within 20 feet
(sight distance) of the Road Loop Antenna.
•
After
or aligned with the Road Loop Antenna.
•
On the same side of the road
as the Tags are mounted in the
vehicles.
•
Four to six inches
from any surface and
four feet
from the
ground for optimal performance.
•
Vertically
. Horizontal positioning degrades system performance.
Do not
mount the Dipole Antenna behind any large object as this
may reduce system performance.
Step 1:
Mount the Dipole Antenna vertically with the cable
connector at the bottom (Figure 21).
The bracket should wrap the antenna at the bottom of the
plastic tube. Use the bolt to tighten the bracket around the
Dipole Antenna.