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All rights reserved Jupiter Avionics Corporation (JAC) permits a single copy of this manual to be printed or downloaded for the express use of an installing agency. Any such electronic or printed copy of this manual must contain the complete text of this copyright notice.
System Overview The JA39-001 Low Impedance Headset Adapter - 5 Ohm Mic - 8 Ohm Phones allows a low impedance headset to be used with a civilian aviation audio controller. The JA39-001 operates using the microphone bias supply of the audio controller and requires no other external power.
Follow the Connector Map in Appendix A of this manual. 2.4.3 Mechanical Installation The JA39-001 can be mounted in any attitude and location sufficient clearance for the connector body and headset plug. It requires no direct cooling. Rev A...
Unusual buzzes, hums or other background audio are symptomatic of multiple grounds, or noisy external systems such as blowers or pumps sharing wiring with the audio system. System Operation The JA39-001 is designed to operate regardless of the input and output polarities of the attached audio controller and headset. 2.5.1 Microphone Operation The JA39-001 amplifies the MIC INPUT audio and routes it to the MIC OUTPUT.
JA39-001 Low Impedance Headset Adapter - 5Ω Mic - 8Ω Phones Installation Manual Appendix A - Installation Drawings Introduction The drawings necessary for installation and troubleshooting of the JA39-001 Low Impedance Headset Adapter are in this Appendix, as listed below. Installation Drawings DOCUMENT...