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Page B-8 GDU 37X Installation Manual – Appendix B
Revision B 190-01054-01
B.1.4 Shield Termination – Method B.1 (Quick Term)
If desired, the drain wire termination (item 3) and the floating shield termination (item 5) can be
effectively combined into a “Quick Term”. This method eliminates the float in the cable insulation and
moves the placement of the window which was described by the dimensions “Window Min” and
“Window Max” from Method A. This technique is depicted in Figure B-5.
NOTE
The original purpose for separating the shield drain termination (item 3) from the float
termination (item 5) in Method A was to allow for a variety of lengths for the drain wires
so that the shield drain terminations (item 3) would not all “bunch up” in the harness and
to eliminate loops in the drain wires. If Method B is chosen, as described in this section,
care must be taken to insure that all drain shield terminations can still be inspected. With
connectors which require a large number of shield terminations it may be best to use
Method A. This will allow the drain shield terminations (item 3) a larger area to be
dispersed across.
Using this method, the instructions from Section B.1.2 (Method A) are followed except that:
1. Step 2 is eliminated
2. Steps 3 and 4 are replaced by the following:
At the end of the shielded cable (item 2), strip “Quick Term Min” to “Quick Term Max” (Table
B-4) length of the jacket to expose the shield. Next trim the shield so that at most 0.35 inches
remains extending beyond the insulating jacket. Fold this remaining shield back over the jacket.
Connect a Flat Braid (item 4) to the folded back shield of the prepared cable assembly. The flat
braid should go out the front of the termination towards the connector. It is not permitted to exit
the rear of the termination and loop back towards the connector. (Figure B-5). Make this
connection using an approved shield termination technique.
NOTE
FAA AC 43.13-1B Chapter 11, Section 8 (Wiring Installation Inspection Requirements)
may be a helpful reference for termination techniques.
Preferred Method:
Slide a solder sleeve (item 3) onto the prepared cable assembly (item 2) and connect the
Flat Braid (item 4) to the shield using a heat gun approved for use with solder sleeves. It
may prove beneficial to use a solder sleeve with a pre-installed Flat Braid versus having
to cut a length of Flat Braid to be used. The chosen size of solder sleeve must
accommodate both the number of conductors present in the cable and the Flat Braid (item
4) to be attached.
NOTE
Reference Section B.1.2 for recommended solder sleeves and flat braid. The same
recommendations are applicable to this technique.