Jupiter Avionics JA39-022 User manual

Rev
B Page i
JA39-022
Headset Adapter
230 Ohm Mic - 230 Ohm Phones
Installation Manual
Rev. A
Jupiter Avionics Corporation
1959 Kirschner Road
Kelowna BC
Canada V1Y 4N7
Tel: [phone]
Toll-Free: 1 855 478 2232
www.jupiteravionics.com

JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Rev A Page ii
Copyright 2019 Jupiter Avionics Corp.
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. Any unauthorized commercial distribution of this manual is strictly prohibited. Except as described above, no part
of this manual may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any storage medium for
any purpose without the express prior written consent of JAC.
RECORD OF REVISIONS
Revision
Rev Date
Description
ECR
A
Dec 2019
Initial release, Serial number 1001 and higher.
6700
Prepared:
MPB
Checked:
Approved:
IMPORTANT:
Information in this document is subject to change without notice.
To confirm the current revision status of this manual, visit the JAC website:
www.jupiteravionics.com
JAC
SDB
02-28-20 JAC
KDV
03-02-20

JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Rev A Page iii
Table of Contents
SECTION 1 - DESCRIPTION ................................................................................................................................................. 1
1.1 System Overview .................................................................................................................................................... 1
1.2 Features Overview .................................................................................................................................................. 1
1.3 Inputs and Outputs .................................................................................................................................................. 1
1.3.1 Inputs............................................................................................................................................................... 1
1.3.2 Outputs ............................................................................................................................................................ 1
1.3.3 Mic Bias Voltage Supply ................................................................................................................................. 1
1.3.4 Input and Output Polarities.............................................................................................................................. 1
1.4 Specifications .......................................................................................................................................................... 2
1.4.1 Electrical Specifications................................................................................................................................... 2
1.4.2 Mechanical Specifications ............................................................................................................................... 3
SECTION 2 – INSTALLATION............................................................................................................................................... 4
2.1 Introduction.............................................................................................................................................................. 4
2.2 Continued Airworthiness ......................................................................................................................................... 4
2.3 Unpacking and Inspecting Equipment..................................................................................................................... 4
2.3.1 Warranty.............................................................................................................................................................. 4
2.4 Installation Procedures............................................................................................................................................ 4
2.4.1 Installation Limitations ......................................................................................................................................... 4
2.4.2 Cabling and Wiring .............................................................................................................................................. 4
2.4.3 Mechanical Installation ........................................................................................................................................ 4
2.4.4 In-Line PTT Cordsets .......................................................................................................................................... 5
2.4.5 Post Installation Checks...................................................................................................................................... 5
2.5 System Operation.................................................................................................................................................... 5
2.5.1 Microphone Operation..................................................................................................................................... 5
2.5.2 Phones Operation ........................................................................................................................................... 5
2.6 Installation Kit .......................................................................................................................................................... 5
2.7 Installation Drawings ............................................................................................................................................... 5
Appendix A - Installation Drawings...................................................................................................................................A1
A1 Introduction............................................................................................................................................................A1
A2 Installation Drawings .............................................................................................................................................A1

Rev B Page 1
JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
SECTION 1 - DESCRIPTION
1.1 System Overview
The JA39-022 Headset Adapter - 230 Ohm Mic - 230 Ohm Phones allows a PELTOR™ headset to be used with a
high impedance aviation audio controller. The JA39-022 operates using the microphone bias supply of the audio
controller and requires no other external power. The phones audio from the audio controller is routed directly to the
headset phones without impedance matching.
1.2 Features Overview
The JA39-022 unit features an industry standard aviation headset pin-out for the plug.
The JA39-022 unit features the PELTOR™ standard headset pin-out for the jack.
The JA39-022 plugs in-line with the headset cord.
The JA39-022 uses a metalized enclosure to shield the circuitry from Radio Frequency Interference.
1.3 Inputs and Outputs
Refer to the JA39-022 connector maps for the mating connector designators and pin assignments for the
input and output signals.
1.3.1 Inputs
Name
Qty
Type
MIC INPUT ±
2
Audio signal
PHONES INPUT
2
Audio signal
1.3.2 Outputs
Name
Qty
Type
MIC OUTPUT HI/LO
2
Audio signal
PHONES OUTPUT ±
2
Audio signal
1.3.3 Mic Bias Voltage Supply
The Microphone Output accepts a DC MIC INPUT bias voltage supply from the Audio Controller.
1.3.4 Input and Output Polarities
The JA39-022 is designed to operate regardless of the input and output polarities of the attached audio controller and
headset.

JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Rev A Page 2
1.4 Specifications
1.4.1 Electrical Specifications
Power Input
Primary nominal bias voltage 12.0 Vdc
Maximum bias voltage 16.0 Vdc
Minimum bias voltage 10.0 Vdc
Input current at 12 Vdc 12 mA max
1.4.1.1 Audio Performance
Rated Input Level
Phones rated input level
Microphone input level
3.4 Vrms ±10%
3.0 mVrms ±10%
Rated Output Level
Phone rated output into 115 Ohms
Microphone rated output into 150 Ohms AC
3.4 Vrms±10%
250 mVrms±20%
Audio Frequency Response
Phone output audio frequency response ≤3dB from 300 to 6000 Hz
Microphone output audio frequency response ≤3dB from 300 to 6000 Hz
Distortion Characteristics
Phones output distortion at rated power ≤10% THD+N
Phones output distortion at 10% of rated power ≤3% THD+N
Input Impedance
Microphone input Impedance 900 Ω±10%
Phones input Impedance 115 Ω±10%
Output Impedance
Phones output Impedance ≤115 Ω
Microphone output Impedance 150 Ω±10%
Output Load Impedance
Phones output load Impedance 115 Ω±10%
Microphone output Impedance 150 Ω±10%
Audio Noise Level without Signal
Noise level below the rated output ≥55 dB
1.4.1.2 Audio Performance, Other
Microphone input designed for MIC type dynamic
Phones output circuitry type Direct Coupled

JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Rev A Page 3
1.4.2 Mechanical Specifications
Height 3.14 in [79.8 mm] max
Depth 1.05 in [26.7 mm] max
Width 0.73 in [18.5 mm] max
Weight 0.11 lbs. [51.2 g] max
Connectors (2): J1 One U-174/U plug
J2 One U-92A/U jack
Mounting Insertion into U-92A/U jack
Installation Kit Not Required.

Rev A Page 4
JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω 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 JA39-022 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 JA39-022 can be mounted in any attitude and location sufficient clearance for the connector body and headset
plug. It requires no direct cooling.

JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Rev A Page 5
CAUTION: When plugged in to a headset audio connector, the JA39 could create excessive strain on
the connector. Ensure that the JA39 is protected from impact, and that no tension is applied to any
attached headset cord.
2.4.4 In-Line PTT Cordsets
If in-line PTT cordsets (drop cords) are used, be aware that incorrectly configured or improperly shielded in-line PTT
cordsets can lead to significant audio problems.
2.4.5 Post Installation Checks
2.4.5.1 Configuration
The JA39 has no configuration options.
2.4.5.2 Power on Checks.
Power up the aircraft’s systems and confirm operation of all functions of the JA39.
a) Begin with a headset attached. Confirm correct operation for both Mic and phones output. Do not proceed
until the headset is functioning correctly.
b) 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.
2.5 System Operation
The JA39-022 is designed to operate regardless of the input and output polarities of the attached audio controller and
headset.
2.5.1 Microphone Operation
The JA39-022 amplifies the MIC INPUT audio and routes it to the MIC OUTPUT.
2.5.2 Phones Operation
The JA39-022 routes the PHONES INPUT audio to the PHONES OUTPUT.
2.6 Installation Kit
The JA39-022 does not require an installation kit.
2.7 Installation Drawings
The drawings and documents required for Installation can be found in Appendix A of this manual.

Rev A Page B1
JA39-022 Headset Adapter - 230 Ω Mic - 230 Ω Phones
Installation Manual
Appendix A - Installation Drawings
A1 Introduction
The drawings necessary for installation and troubleshooting of the JA39-022 Headset Adapter - 230 Ω Mic -
230 Ω Phones are in this Appendix,as listed below.
A2 Installation Drawings
DOCUMENT Rev
JA39-022 Connector Map A
JA39-022 Interconnect A
JA39-022 Mechanical Installation B

JUPITER AVIONICS TEMPLATE AUTOCAD PORTRAIT SIZEA REV B.DWT
TITLE
APPROVED
PREPARED
CHECKED
L00N3
NCAGE CODE PART NO. SHEET
DOC NO.
CONFIDENTIAL & PROPRIETARY
TO JUPITER AVIONICS CORP.
TJ-120 or U-92 A/U
MATING CONNECTOR
PIN 4:
PIN 2:
PIN 3:
PIN 1:
View of Aircraft mating connector
Aircraft Connector
1/2
JA39-022 Connector Map Rev A
JA39-022
KV
PHONES INPUT LO
MIC OUTPUT LO
Headset Adapter - 230 Ohm Mic - 230 Ohm Phones
PHONES INPUT HI
P1
P1 - Aircraft Connector
MIC OUTPUT HI
JAC
SDB
02-28-20
JAC
KDV
02-28-20