Ameri-King AK-451-ELT - Manual (Page 56)

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2.2.6 WIRING CABLE INSTALLATION
After installing the ELT Main Unit, Antenna and Remote Unit in the aircraft, install
the Coaxial Cable between the ELT Main Unit and the Antenna. The Cable should
not cross any production break and must have a reasonable amount of slack at the
ELT Main Unit. This slack is necessary to allow for easy removal of the Coax Cable
during maintenance and when needed as a Portable Device. If a longer Coaxial Cable
than the one supplied with the unit (6 feet), it may be fabricated using RG-142(MIL-
C-17) Cable and AMP 227079-5 Connectors or King KC-59-162 BNC Connectors or
their equivalent. Insertion Loss of the Cable should not exceed 0.8 dBm. Secure the
Coaxial Cable using Tie Wraps or other appropriate methods. Make sure the Cable is
protected from abrasion. RG 400/U or equivalent is acceptable.
The Remote Switch Unit is connected to the ELT Main Unit via means of RJ-12
Standard Type Modular Connectors. The RJ-12 Connecting Cable is included with
each ELT. To install the Cable, connect each modular plug at end of the
Interconnecting Cable to the ELT Main Unit Jack and the ELT Remote Switch Unit
Jack via T-Adapter Connector. (See Figures 14.1, 14.1.1)
Connect buzzer wiring and GPS wiring harness assembly P/N 4510042 to the ELT
Remote Switch Unit via T-Adapter Connector as well. (See Fig. 14.1, 14.1.1, 14.1.2,
and 14.2).
Note: All wiring harness assemblies (P/N 4510041/4510042) were Qualification
tested, including Flame Test per TSO C126/RTCA DO-204 requirements.
Avoid running this cable near sources of strong EMI/RFI radiation. Secure the Cable
along its run with Tie wraps or other suitable methods. The interconnecting cable
may be shortened or a longer cable of up to 200 feet may be used if required. Wiring
per M22759/18 or /35 (24 AWG) or equivalent is acceptable.
2.3
ELECTRICAL INSTALLATION
Please refer to FAA AC 43.13 for guideline.
Since both the ELT Main Unit and the Remote Unit have their own internal batteries,
there is no electrical connection required between the entire ELT system and the
Aircraft Electrical Power System. The audible buzzer is powered by the Remote Unit
internal battery.
2.4
POST INSTALLATION TEST
Please refer to FAA AC 43.13 for guideline.
After completing the mechanical installation, ensure the ELT Main Unit must be
mounted with the FORWARD arrow marking adhered. The following Post
Installation Function Tests must be performed. Regulations require that Transmitter
Tests only be done during the first 5 minutes of each hour. If you are at a location
where there is an FAA Control Tower or other monitoring facility, notify the facility
before beginning the tests.
Note: Press RESET anytime to turn off unwanted transmission.