Rev A
Page 3
JA39-075 Low Impedance Headset Adapter -
75Ω Mic
-
150Ω Phones
SECTION 2 – INSTALLATION
2.1
Introduction
This section contains unpacking and inspection procedures, installation information, and post-installation checks.
2.2
Continued Airworthiness
Maintenance of the JA39-075 is on condition only. Scheduled inspection and/or periodic maintenance of this unit is
not required.
2.3
Unpacking and Inspecting Equipment
Unpack the equipment carefully. Check for shipping damage and report any problems to the relevant carrier. Confirm
that the Certificate of Conformance is included. Complete the on-line warranty card from the Jupiter Avionics
Corporation (JAC) website –
www.jupiteravionics.com/warranty.
2.3.1
Warranty
All JA39 products manufactured by JAC are warranted to be free of defects in workmanship or performance for 1 year
from the date of purchase from an approved JAC dealer or agency. This warranty covers the cost of all materials and
labour to repair or replace the unit, but does not include the cost of transporting the defective unit to and from JAC or
its designated warranty repair centre, or of removing and replacing the defective unit in the aircraft. This warranty
does not cover failures due to abuse, misuse, accident, or unauthorized alteration or repairs.
If the on-line warranty card is not completed, the product will be warranted from the date of manufacture.
Contact JAC for return authorization, and for any questions regarding this warranty and how it applies to your unit(s).
JAC is the final arbiter concerning warranty issues.
2.4
Installation Procedures
WARNING
: Loud noise can cause hearing damage. Set audio system headset volumes to minimum
before conducting tests, and slowly increase the volume to a comfortable listening level.
2.4.1
Installation Limitations
The JA39 may be installed only by following the applicable airworthiness requirements.
2.4.2
Cabling and Wiring
The JA39 plugs directly into a standard aircraft audio system headset connector. All wires to said connector shall be
selected in accordance with the original aircraft manufacturer’s maintenance instructions, or AC43.13-1B Change 1,
Paragraphs 11-76 through 11-78. Unshielded wire types shall qualify to MIL-W-22759 as specified in AC43.13-1B
Change 1, Paragraphs 11-85, 11-86, and listed in Table 11-11. For shielded wire applications, use Tefzel MIL-C-
27500 shielded wire with tag ring or equivalent (for shield terminations) to make the most compact and easily
terminated interconnect. Follow the Connector Map in Appendix A of this manual.
2.4.3
Mechanical Installation
The JA39-075 can be mounted in any attitude and location sufficient clearance for the connector body and headset
plug. It requires no direct cooling.
