TERION UM20-100111B, Руководство по установке, Страница: 33 / 78

5 GPS Antenna Installation
1. Determine the best location for the GPS antenna. The GPS antenna should be
mounted flat on the cab top, or other similar location, pointing skyward. There
should be no metal obstructions above the antenna. The antenna may be mounted
under the roof-mounted air dam if the air dam is constructed of fiberglass or some
other non-metallic composite material.
2. Thoroughly clean the cab-mounting surface and antenna base with isopropyl alcohol
wipes provided. Do not use denatured alcohol , as it will not clean the bonding
points properly.
WARNING! THE 3M AUTOMOTIVE ADHESION PROMOTOR 4298,
USED IN THE NEXT STEP, IS HIGHLY FLAMMABLE, HARMFUL
BY INHALATION, AND IRRITATING TO EYES AND SKIN. SEE
THE MSDS FOR SAFETY AND HANDLING IN APPENDIX B OF
THIS MANUAL.
3. Apply the adhesive promoter in a thin, uniform coating to the
bonding surfaces using the minimum amount to fully coat the
surface. Allow the primer to dry thoroughly before applying tape
(usually five minutes at room temperature). Be sure the primed
surfaces remain free from contaminants.
4. Peel the backing off one side of the adhesive foam tape, and stick
the tape to the cleaned surface. Peel the top backing off the adhesive foam tape, stick
the cleaned GPS antenna in position, and press firmly.
Note: If possible, avoid the next step by using a common route
and entry point with the FM/DHF antenna cable.
WARNING! CHECK BOTH SIDES BEFORE DRILLING. DRILLING
INTO A WIRE CAN CAUSE A FIRE. DRILLING INTO AN AIR LINE
CAN CAUSE BRAKE FAILURE.
5. Drill an entry hole for the GPS antenna cable. Determine the best entry point and
check both sides to make sure they’re clear. Start the hole with a center punch, drill
the hole, and then smooth the edges with a de-burring tool.
6. Run the GPS antenna cable from the antenna base mount to the cab entry point,
joining up with the FM/DHF antenna cable, if possible, to use the same entry hole.
7. Place the GPS antenna wire in split tubing.
8. Pass the cables through the hole, and then place a 3/4" grommet around the cables
and into the hole.
Note: Use the grommet most appropriate for the wall thickness; the
installation kit comes with two grommet sizes for either a 1/16" or a 1/8" wall
thickness.
5-1
Mobile Messaging System Installation Manual June 15, 2001
UM20-100111B Terion, Inc.