EFD1000 Installation Manual
DOCUMENT # A-01-126-00 PAGE 68-225 Revision H
© Copyright 2009 Aspen Avionics Inc.
7.2.1 HIRF/Lightning Requirements
In order to meet HIRF and Lightning requirements it is required that the following cable
runs use either an over braid applied during fabrication or double shielded wires. The
over braid or double shield should extend within the back shell and must be grounded
at both ends.
• All ARINC 429 and RS-232 wiring into or out of the PFD require either a double
shielded wire or a tinned copper over braid be applied over the twisted shielded
pair. See Figure 7.1 below and NOTE 1 on Wiring Diagrams 9.4 through 9.14.
Over Braid or
Double Shield
Over Braid or
Double Shield
Over Braid or
Double Shield
PFD
GPS1
RS-232 or A429
GPS2
RS-232 or A429
ACU
A429 PFD to ACU only
*Twisted Shielded Pair or Pairs = all shielded
wires as shown on Wiring Diagrams in Section 9.
This may be one, two, or three sets of twisted
shielded pair. Over braid installed over top.
ACU to Analog GPS,
ACU to Analog VLOC, and
ACU to Autopilot do not
require over
braid.
Wire as shown on Wiring Diagrams in
Section 9.
Tinned copper over braid Alpha Wire P/N 214X, Daburn
P/N 2350-X or equivalent , or doubled shielded wires
MS27500-22TG2V64 2 conductor cable or equivalent
are required
on the following inputs and outputs.
1
1
1
Twisted Shielded Pair or Pairs*
Twisted Shielded Pair or Pairs*
Twisted Shielded Pair or Pairs*
1
Figure 7.1 – Over Braid/ Double Shield Requirements
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