ACR&Artex 2-Wire ELT__RSWT Interface - Manual (Page 11)

ACR Electronics, Inc. 570-0049 Revision B
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Page 11 of 30
4. CABLE HARNESS
Due to the large array of configurations possible, ACR Electronics, Inc. does not provide a
harness as part of the installation of the ELT. Accordingly, it is the responsibility of the installer:
1. To manufacture the required harness(es) and ensure that the wires are adequate for
the installation.
2. To check the integrity of the 2-communication wires installed across the aircraft.
3. To thoroughly check the integrity of any wires used in the installation to lessen wiring
problems and increase operational readiness.
4. To follow standard aircraft wiring practices.
The D-sub crimp contact 151-0042 accepts 22 to 26 AWG wires and is used with Tyco crimping
tool 91525-1 or equivalent.
Artex recommends using a shielded cable to prevent signals related to power frequency, audio
frequency and electrical transients generated from on-board equipments from interfering with the
ELT operation.
The mating connector and contacts connecting to the ELT are found in the install kit included in
the pack list at the time the beacon is purchased. Accordingly, the hardware included in the 455-
0032 and 455-0041 is only used to connect each interface together.
The interfaces 453-0032 and 453-0041 adequately communicate and allow operation of the
toggle switch 140-3349 with the ELT when using 26 AWG wires with a length of 240 ft (73
meters). Other combinations of length and gauge size must be tested on a case by case basis to
ensure proper communication between the ELT and the toggle switch.
4.1 INSULATION ADJUSTMENT PROCEDURE
On many tools, the insulation barrel crimp height is regulated by the Insulation Adjustment Knob
(Figure 2). The insulation crimp should hold the insulation firmly without cutting into it. To
determine the proper insulation crimp setting, test crimp a loose piece contact using the setting
which corresponds to the insulation diameter:
- (1) for small
- (2) and (3) for medium
- (4) for large
D-Sub Crimp:
Do NOT cut or nick the wire strands during
wire stripping.
Contact crimp 151-0042 accepts wire AWG 22 through 26.
DESCRIPTION MANUFACTURER GAUGE TOOL PART NUMBER
Hand Tool Crimper Tyco 22-26 92525-1 or equivalent
NOTE: Use Tyco Extraction/Removal Tool 91067-2 or equivalent.
For further information, refer to Tyco 91285-1 Insertion/Extraction Tool document IS9404
located on Tyco web site.