Terra TX 760D, Руководство по эксплуатации и установке

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Revision A
November 25, 1996
2-1
SECTION II
2. INSTALLATION
2.1 GENERAL
This section contains all necessary installation instructions and check-out procedures for the
Terra by Trimble TX 760D VHF Communications Transceiver. For the installer with little or
no experience of installing avionics, Section 2.3 provides important information. Trimble
recommends reading this section before continuing with the installation.
2.2 PREPARATION FOR USE
Every precaution has been taken to protect the TX 760D during shipment. Upon receipt of
the equipment, perform the following inspections:
1. Remove the unit from the shipping container and visually inspect for damage.
2. Check controls and switches to determine if they may have been damaged.
3. Make sure that all hardware and connectors listed in Section I, under “Equipment
Supplied” are present.
If the unit is damaged, a claim must be filed with the carrier. The carrier assumes title of the
unit when accepted for shipment. Do NOT return the unit to Trimble or its representatives.
It is suggested that the package be retained for inspection by the carrier in the case of damage
or for future use should it be necessary to ship the unit for service or to transfer it to another
location.
2.3 GENERAL INSTALLATION INSTRUCTIONS FOR AVIONICS
The following paragraphs contain pertinent hints, advice, and guidance intended for use by
installers of avionics equipment. These have been drafted to address common problems
encountered during the installation process. Specific questions may be addressed to Trimble
for technical assistance by calling 1-800-487-4662 and requesting Technical Assistance.
2.3.1 COAXIAL CABLES AND CONNECTORS
Improper installation of coaxial cables and connectors create many of the problems
encountered during avionics installations. Refer to Figure 3-1 for guidance of typical
BNC connector assembly. Refer to Figure 3-2 for instructions about connecting coax
cable to the BNC connector(s) mounted at the rear of Terra by Trimble mounting
trays. Problems to avoid include twisted, chafed, or pinched cables, sharp bends in
cables, open or shorted center conductors or shield braid, and improper grounding of
shields. Also, proper termination of antenna coaxial cables at the antenna should be
carefully checked. After installing connectors, pull firmly to ensure good mechanical
bonding (particularly if you use crimp-on connectors) and use your ohmmeter to
insure good electrical connection with no shorting. Be sure that coax lengths and
types follow the avionics manufacturer’s recommendations.