Installation Manual

Lynx NGT-9000
Installation Manual
0040-17001-01 (Revision W) Installation Page 2-8
2.3.3 Electrical Connections
1. The installer must take the following into consideration before installation:
• Use of any wire or cable not meeting specification voids all warranties.
• The installer is responsible for supplying wires, cables, and connectors.
• Wire-marking identification is at the discretion of the installer.
• All wiring must be in accordance with industry-accepted methods, techniques, and practices.
• The assembly guidelines for the antenna cables are detailed in paragraph 2.3.7.1.
• Refer to Appendix A for signal name and cable characteristics prior to wiring installation.
• Refer to Appendix C for Interconnect Diagrams of External Displays, Control Panels, and other
Equipment (i.e. GPS Splitter and Coupler).
• The length and routing of the external cables must be carefully studied and planned before
attempting installation of the equipment.
• The wiring harness should not run adjacent to heaters, engine exhaust, and heat sources or be
located near fuel lines, high electrical capacity lines, flight control cables, and protected areas of
the aircraft or be exposed to wire chafing.
• Avoid sharp bends while routing the cables.
• Keep the cables run as short as possible. Grounding pigtails (if installed) should not exceed
more than 3 inches in length. Terminate shields in the backshell of the mating connector (at P1).
• Required connectors and contact pins are supplied in the installation kits.
• All wires should be 24 AWG unless otherwise noted in the interconnect diagram. Use M22759 or
equivalent wire and Tefzel Wire M27500 or equivalent for twisted shielded wired for installation.
• Installer is responsible for determining appropriate circuit breakers needed to protect aircraft
wiring. Manufacturer recommends the following:
o 3.0 amp “pull style” circuit breaker for the installations with 14VDC input.
o 2.0 amp “pull style” circuit breaker for the installations with 28VDC input.
o For installations with a CP-2500 Control Panel, a single circuit breaker can be used for the
CP-2500 and the Remote Mount NGT-9000R, RD, & R+.
• Cable specifications and approved vendors are provided in Equipment Required Not Supplied.
o The L-Band and GPS Cables must be RG-400 or equivalent. Refer to paragraph 2.3.7.1 for
location and fabrication information. Cable attenuation must not exceed 1.5 dB (including
the connectors).
o The Directional Cables (required only for models with TAS/TCAS and TAS/Diversity or
TCAS/Diversity) requires three cable assemblies; sum (Sigma Port – blue band), bit probe
(Probe Port) and difference (Delta Port – red band). Cable attenuation for the sum and
difference ports must not exceed 1.5 dB.
2. Refer to Figure 2-6 (sheet 1 thru 4) for Interconnect Wiring Diagram. Interconnect diagrams for
alternate equipment is provided when available.
3. Refer to Figure 2-7 for pin locations, signal names, and function. Connector information for P1 is
supplied in the recommended installation kit. The assembly requirements for the P1 mating
connector are shown in Figure 2-9. An example of the assembled wiring harness is provided in
Figure 2-10.
4. It is recommended that the installer perform the following wiring checks during installation:
• Check all wiring, point-to-point, for continuity before connecting components.
• Ensure voltages are not applied to signal wires.
• Inspect cables for correct connection.