Power Cable; Heading Input Cable - GOODRICH Stormscope Series II Installation Manual

•
To prevent undo strain on the shield ground wire, when the antenna is top-mounted, clamp the
antenna cable to the airframe no further than one foot (1 ft.) from the antenna connector.
•
If the antenna cable routes through a bulkhead connector, a dedicated connector must be used.
(The antenna cable must not share a bulkhead connector with any other conductors).
•
The antenna cable may tie to other electrical cables at right angles.
•
The antenna cable overall shield is terminated at the antenna end only
Refer to paragraph 2.5 for antenna and doubler installation.

2.7.2 Power Cable

The power cable (not supplied) runs from the mating connector to the aircraft circuit breaker panel. For the
power cable, use twisted shielded pair, #20 AWG. The positive wire connects to the avionics circuit breaker.
The negative wire connects to airframe ground. If airframe ground is not available, run a separate wire to
power ground at the battery.
Reversing the power leads will cause an internal fuse to blow. Fuse
replacement procedures are detailed in chapter 4.
Power cable routing is generally not critical to system operation. Cable lengths greater than 15 feet require
a second shielded twisted pair (to reduce the voltage drop) connected to pins 20 and 21 (refer to figure 2-5).
Affix a circuit breaker label (P/N 78-8060-5733-3, provided with the hardware package) to the circuit
breaker panel.

2.7.3 Heading Input Cable

The heading input cable connects the WX-950 processor to the aircraft heading system. This cable provides
XYZ and HC aircraft heading information (or King KCS55 stepper signals) to the WX-950 processor. FLAG
lines are also included in the heading input cable to provide the WX-950 processor with flag status (or
heading valid) information.
Use of any cable not meeting Goodrich Avionics Systems specifications voids all
warranties, and may be cause for termination of Authorized Installer status.
Table 2-1 lists some U.S. vendors who sell the required cable by the foot.
The synchro cable consists of the following (refer to figure 2-8):
1. Twisted, Shielded, Jacketed Triad #24 AWG
2. Twisted, Shielded, Jacketed Pair #24 AWG
3. Same as Item 2, except Orange jacket.
Aluminized Mylar ® Wrap.
4.
5. #34 AWG braided shield.
FEP Teflon ® jacket .013 in. - .023 in., clear (translucent).
6.
7. Marker tape with vendor P/N.
2-12
Rev. C
Installation Manual
Colors: White, Blue, Orange
Shield: Tin Plated Copper Braid, 90% min.
Jacket: FEP .007 in. min., White
Colors: White, Blue
Shield: Tin Plated Copper Braid, 90% min.
Jacket: FEP .007 in. min., Blue
WX-950
CAUTION
NOTE