Installation Manual Part 1

FCC ill: CDG-ARTU
MAGNASTAR
EXHIBIT C
C-2000 DIGITAL AIRBORNE TELEPHONE SYSTEM
CABLE CONSTRUCTION TECHNIQUES and CHECK-OUT
This section provides cable construction techniques for LAN (high speed data bus) cabling and gives
instructions for the inspection of MagnaStar C-2000 cables before the installation of the MagnaStar C-
2000 equipment. Cable fabrication and installation is very important for successful performance of the
system. The fabrication of these cables requires the skill and attention required for any modem digital
radio system installation. Therefore. special attention must be given to grounding and shield
concerns.
4.1
Cable Construction Techniques
Cable requirements and special fabrication instructions are included in the Interface Control Document
(ICD) in APPENDIX B of the MagnaStar Installation Manual. Also, connector kit drawings are included at
the end of this section. See paragraph 4.3. These drawings provide detailed cable construction
information for the ARTU, CDBR-1, CDBR-2 and AIU.
4.2
Cable Check-Out
This section provides some basic instructions for inspecting the cable prior to installation of the
MagnaStar equipment.
ARTU Data, Inter-CDBR/AIU and Handset Cables
These cables should be verified for correct wiring prior to installation of MagnaStar equipment. Cable
check-out should include a visual inspection for bent or damaged connector pins. These cables should
then be checked for proper interconnection. The required check list is:
SIGNAL CABLE INSTALLATION CHECK LIST
a) Visually inspect cables for bent or damaged connector pins.
b) Visually inspect for proper back shell installation.
c) Continuity check for proper pin-to-pin interconnection between cable connectors.
d) Check for open circuit condition between each pin and the back shell.
e) Check for open circuit condition between each pin and all other connector pins.
f) Continuity check from back shell to back shell for shield connection to connector back shells.
Notes:
1) An individual ARTU Data cable or Inter-CDBR cable cannot exceed a length of 50 feet.
2) The ARTU Data cable plus alllnter-CDBR cables cannot exceed 200 feet in total length.
3) The maximum length of the Handset cable cannot exceed 8 feet.
4) Reduce potential electrical interference problems by routing these cables away from high current
aircraft cables.
5) Do not attach an Inter-CDBR cable for "growth". Install such cables as desired but do not connect to
the last CDBR/AIU.
4.2.2
Coaxial RF Cables: Antenna, Transmit and Receive cables
RF cables should be visually inspected for proper construction as well as correct interconnection. The
required check list is:
RF CABLE CHECK LIST
a) Visual inspection of cables for bent or damaged pins.
b) Mechanically inspect cables to insure minimal movement between cable connector and coax
cable.
c) Continuity check for center conductor interconnect between coax cable connectors.
d) Continuity check for shield interconnection between coax cable connectors.
e) Check for open circuit between center conductor and shield braid.
4-1
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