Jupiter Avionics JA94-N44A User manual

Rev A
Page i
JA94-N44A Dual Audio Controller
-AMS44 Compatible - NVG
Installation and Operating 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

JA94-N44A Dual Audio Controller - AMS44 Compatible - NVG
Installation and Operating Manual
Rev A Page ii
Copyright 2017 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
Sep 2017 Initial release, Serial number 1001 and higher.
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
4965
JAC
KDV
12-14-17 JAC
MQS
12-15-17

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Table of Contents
SECTION 1 - DESCRIPTION ................................................................................................................................................. 1
1.1 System Overview .................................................................................................................................................... 1
1.2 Features Overview .................................................................................................................................................. 1
1.3 Inputs and Outputs .................................................................................................................................................. 2
1.3.1 Inputs ............................................................................................................................................................... 2
1.3.2 Outputs ............................................................................................................................................................ 2
1.3.3 Bi-directional Ports .......................................................................................................................................... 2
1.4 Specifications .......................................................................................................................................................... 3
1.4.1 Electrical Specifications................................................................................................................................... 3
1.4.2 Mechanical Specifications ............................................................................................................................... 5
1.4.3 Environmental Specifications .......................................................................................................................... 5
SECTION 2 – INSTALLATION ............................................................................................................................................... 6
2.1 Introduction .............................................................................................................................................................. 6
2.2 Continued Airworthiness ......................................................................................................................................... 6
2.3 Unpacking and Inspecting Equipment..................................................................................................................... 6
2.3.1 Warranty .......................................................................................................................................................... 6
2.4 Installation Procedures ............................................................................................................................................ 6
2.4.1 Installation Limitations ..................................................................................................................................... 6
2.4.2 Cabling and Wiring .......................................................................................................................................... 6
2.4.3 Mechanical Installation .................................................................................................................................... 7
2.4.4 In-Line PTT Cordsets ...................................................................................................................................... 7
2.4.5 Legend Replacement ...................................................................................................................................... 7
2.4.6 Post Installation Checks .................................................................................................................................. 7
2.5 Adjustments and Configuration using ProCS™ ...................................................................................................... 8
2.5.1 Configuration Cabling Requirements .............................................................................................................. 8
2.5.2 ProCS™ Setup ................................................................................................................................................ 8
2.5.3 Configurable Settings ...................................................................................................................................... 8
2.5.4 Other Configuration Features ........................................................................................................................ 14
2.6 Installation Kit ........................................................................................................................................................ 15
2.6.1 Recommended Crimp tools ........................................................................................................................... 15
2.7 Installation Drawings ............................................................................................................................................. 15
2.7.1 Generation of Custom Drawings ................................................................................................................... 15
SECTION 3 – OPERATION .................................................................................................................................................. 16
3.1 Introduction ............................................................................................................................................................ 16
3.2 Front Panel Controls ............................................................................................................................................. 16
(1) (2) NAV1 - FM2 Receive Select Switches .......................................................................................................... 17
(3) AUX and PA Receive Select Switches and Legends .................................................................................... 17
(4) VOX Threshold Control ................................................................................................................................. 17
(5) (8) Transmit Selector .......................................................................................................................................... 18
(7) (10) RX/ICS Volume control and legend .............................................................................................................. 19
(9) Music/Configuration Connector cover (♫/io) ................................................................................................. 19
1.4.4 Flammability of Materials ................................................................................................................................ 5

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3.3.4 VOX Operation .............................................................................................................................................. 20
3.3.5 ICS Operation ................................................................................................................................................ 20
3.3.6 ICS Isolation Operation ................................................................................................................................. 21
3.3.7 Direct Audio Operation .................................................................................................................................. 21
3.3.8 Music Operation ............................................................................................................................................ 21
3.3.9 Rear Hand Mic Operation ............................................................................................................................. 21
3.3.10 Cockpit Voice Recorder (CVR) Operation .................................................................................................... 21
3.3.11 Remote RMT Operation ................................................................................................................................ 21
3.4 Emergency Operation Mode ................................................................................................................................. 22
3.4.1 Left User Emergency Mode .......................................................................................................................... 22
3.4.2 Right User Emergency Mode ........................................................................................................................ 22
3.4.3 Auto Emergency Mode .................................................................................................................................. 22
3.4.4 Selected Emergency Mode ........................................................................................................................... 22
Appendix A - Installation Drawings ................................................................................................................................... A1
A1 Introduction ............................................................................................................................................................ A1
A2 Installation Drawings ............................................................................................................................................. A1
Appendix B - Installation Documents ............................................................................................................................... B1
B1 Airworthiness Approval ......................................................................................................................................... B2
B2 Instructions for Continued Airworthiness .............................................................................................................. B2
3.3 Normal Operation Mode ........................................................................................................................................ 19
3.3.1 Panel Lighting ................................................................................................................................................ 19
3.3.2 Receiving ....................................................................................................................................................... 19
3.3.3 Transmitting (Transmit Operation) ................................................................................................................ 20

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JA94-N44A Dual Audio Controller - AMS44 Compatible - NVG
SECTION 1 - DESCRIPTION
1.1 System Overview
The JA94-N44A dual audio controller is a centralized management system for two independent users that distributes
and controls all transceiver, receiver and warning source audio in an aircraft. It enables the selected transmission of
microphone audio to one or more transceivers and distributes all intercom audio. The JA94-N44A dual audio
controller can be used in a standalone configuration or a star configuration to prevent the loss of the entire system
due to the failure of one controller. It provides a passive emergency mode that directs the Right User to the COM1
transceiver and NAV1 receiver, and the Left User to COM2 transceiver and NAV2 receiver.
The JA94-N44A is set up on a per-installation basis using a configuration cable and a PC running the product
configuration tool to download system configuration settings via the front panel music / configuration connector. To
facilitate future customizations and certification, neither software nor complex electronic devices are used in the JA94-
N44A design.
1.2 Features Overview
The JA94-N44A may be configured as a drop-in replacement for the Cobham/NAT AA92, AMS42 & AMS44.
The JA94-N44A supports up to 6 transceivers, each selectable from two rotary switches.
The JA94-N44A supports up to 4 selectable receivers in two banks of 4 switches.
The JA94-N44A provides intercom functions for up to 2 users and up to 6 passengers.
The JA94-N44A has individual VOX gating for each user and passenger.
The JA94-N44A supports two Direct Audio inputs at a fixed level to two users in Normal and Emergency mode.
The Direct audios may be routed to both Left and Right User phones or Direct Audio 2 routed to Right User and Direct
Audio 1 to Left User.
The JA94-N44A supports a third Direct Audio input in Normal mode only.
The JA94-N44A allows the receive audios to be disconnected from the Passenger Phones.
The JA94-N44A supports two CVR outputs.
The JA94-N44A allows transmit access for five crew members (Right User, Left User, Passenger 1, Passenger 2, and
Passenger 6).The JA94-N44A allows ICS PTT access for all users and passengers.
The JA94-N44A features a Music / Configuration connector on the faceplate for configuration of audio levels and
routing. The port can also be used as a music input and is compatible with most music players.
The JA94-N44A has three modes of operation: Normal Mode, Emergency Mode and ICS Isolate Mode.
The JA94-N44A supports radio simulcast.
The JA94-N44A supports a remote transmit select input.
The JA94-N44A supports selection of Normal Mode and Emergency Mode from a front panel control and selection of
ICS Isolate Mode from an external switch.
The JA94-N44A is NVIS Type I Class B compliant.

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1.3 Inputs and Outputs
Refer to the JA94-N44A connector maps for the mating connector designators and pin assignments for the
input and output signals.
1.3.1 Inputs
Name
Qty
Type
CONFIG DATA TO JA94-N44A 1 Data signal
MODE SELECT 1 Multi format signal
DIRECT AUDIO 3 Audio signal
ICS PTT 8 Control signal
LIGHTS INPUT 1 Analog control signal
MIC 8 Audio signal
MUSIC 4 Audio signal
POWER INPUT 1 Power supply
RX HI/LO 10 Audio signal (5 COMs, 4 NAVs and 1 PA)
TX PTT 5 Control signal
COM Remote TX Select 6 Control signal
ICS Isolate Mode 1 Control signal
1.3.2 Outputs
Name
Qty
Type
CVR 2 Audio signal
CONFIG DATA FROM JA94-N44A 1 Data signal
Headphones 8 Audio signal (Note: 7 outputs for driving 8 phones)
Transceiver MIC HI/LO 6 Audio signal (COM 1&2, FM 1&2, AUX & PA)
Transmit PTT 6 Active low discrete
RX COMP OUT 2 Audio signal
1.3.3 Bi-directional Ports
Name
Qty
Type
ICS TIE 1 Audio signal

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1.4 Specifications
1.4.1 Electrical Specifications
Power Input
Primary nominal voltage 28 Vdc
Maximum voltage 32.2 Vdc
Minimum voltage 22.0 Vdc
Emergency voltage 18.0 Vdc
Power Off Voltage ≤ 15.0 Vdc
Input current 0.95 A max
1.4.1.1 Audio Performance
Rated Input Level
Receive audio rated input level 7.75 Vrms ± 10%
Direct audio rated input level 7.75 Vrms ± 10%
Music rated input level 400 mVrms ± 10%
Microphone input level 250 mVrms ± 10%
Intercom Tie Line type 1 input level 340 mVrms ± 10%
Intercom Tie Line type 2 input level 1.20 Vrms ± 10%
Rated Output Level
Phone rated output 8.7 Vrms ± 10%
Left or Right User Phone rated output in emergency mode 3.00 Vrms ± 20%
Phone rated output level, with MUSIC input 4.35 Vrms ± 10%
COM MIC rated output 250 mVrms ± 10%
CVR rated output 500 mVrms ± 10%
CVR rated output with MUSIC INPUT 250 mVrms ± 10%
CVR rated output with MIC INPUT 1.00 Vrms ± 10%
CVR rated output, in emergency mode, 500 mVrms ± 10%
Receive Composite rated output 2.50 Vrms ± 10%
Intercom Tie Line type 1 rated output 340 mVrms ± 10%
Intercom Tie Line type 2 rated output 1.20 Vrms ± 10%
Audio Frequency Response
Audio output audio frequency response ≤ 3 dB from 300 to 6000 Hz
Distortion Characteristics
Audio output distortion at rated power ≤ 10%
Input Impedance
Microphone input Impedance 150 Ω ± 10%
Direct Audio input Impedance 1000 Ω ± 10%
Receive Audio input Impedance 1000 Ω ± 10%
Music Audio input Impedance 1000 Ω ± 10%
Intercom Tie Line Audio input Impedance 2000 Ω ± 10%
Output Load
Phone load 600 Ω ± 10%
Transceiver Microphone load 150 Ω ± 10%
CVR load 5000 Ω ± 10%

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Receive Composite Audio load 600 Ω ± 10%
Intercom Tie Line type 1 rated load 2000 Ω ± 10%
Intercom Tie Line type 2 rated load 2000 Ω ± 10%
Intercom Tie Line type 1 maximum load 666 Ω max (3 loads)
Intercom Tie Line type 2 maximum load 285 Ω max (7 loads)
Volume Controls
Receive Audio control variation 32 ± 3 dB min
ICS Audio control variation 42 ± 3 dB min
Crosstalk Level
Input to Output crosstalk ≤ 55 dB
Input to Input crosstalk ≤ 60 dB
Station to Station crosstalk ≤ 65 dB
Audio Noise Level without Signal
Noise level below the rated output ≥60 dB
1.4.1.2 Audio Performance, Other
CVR HI / LO output circuitry type (Normal) differential
CVR HI / LO output circuitry type (Emergency) single ended
Microphone inputs designed for MIC type amplified dynamic/electret
Microphone inputs bias voltage 12 Vdc ± 10%
Microphone inputs circuitry type single ended
MUSIC LEFT / RIGHT HI / LO audio input circuitry type differential
FRONT MUSIC LEFT / RIGHT audio input circuitry type: single ended
MUSIC attenuation 38 dB max
RECEIVE AUDIO input circuitry type differential
PHN HI / LO output circuitry type single ended
MIC output circuitry type differential
RX Composite Audio output circuitry type differential
ICS TIE HI / LO Circuitry Type differential
PHN HI / LO output music fade in duration 2.5 ± 1.0 seconds
VOX Threshold level range relative to rated MIC input -28 to +6 dB
VOX off Delay Time range 0.5 to 2.0 seconds
Transmit Timeout Timer 90 ± 10 seconds
1.4.1.2 Lights Input
LIGHTS INPUT ranges 0 to 28, 0 to 14 and 0 to 5 Vdc
LIGHTS INPUT current 10 mA max.

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1.4.2 Mechanical Specifications
1.875 in [47.63 mm] max
5.48 in [139.2 mm] max
5.75 in [146.1 mm] max
5.00 in [127 mm] max
1.99 lbs. [0.91 kg] max
brushed aluminum with conversion
coating
J1 One 37-pin D-Sub male, V5 locking
J2 One 50-pin D-Sub male, V5 locking
J3 One 15-pin D-Sub male, V5 locking
J4 One 4 pole 3.5mm stereo jack
J5 One 4-40, 0.5 in. max
4 Dzus fasteners
≤ 2.5 mΩ
INST-JA94
Height
Behind panel depth
Faceplate width
Behind panel width
Weight
Material
Connectors:
Mounting
Bonding
Installation kit part number
1.4.3 Environmental Specifications
The JA94-001A Dual Audio Controller has been qualified to the environmental conditions listed below. Environmental
categories for which TSO compliance has been demonstrated are listed in the Environmental Qualification Form in
Appendix B of this manual.
Temperature:
Operating
Ground Survival
Altitude
Humidity
Shock, Crash Safety
-45 °C to +70 °C
-55 °C to +85 °C
50,000 ft
Cat A (48 hours)
6 g, 20 g for 11 ms
1.4.4 Flammability of Materials
The JA94-N44A complies with the requirements of RTCA/DO-160G Sec 26.3.3 "Flammability", through equivalent
flammability testing of materials and the Small Parts Exemption.

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JA94-N44A Dual Audio Controller - AMS44 Compatible - NVG
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 JA94-N44A 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 Authorized Release Certificate or 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 products manufactured by JAC are warranted to be free of defects in workmanship or performance for 2 years
from the date of installation by 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.
THIS WARRANTY IS VOID IF THE PRODUCT IS NOT INSTALLED BY AN AUTHORIZED JAC DEALER. 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 the headset volume to minimum before
conducting tests, and slowly increase the volume to a comfortable listening level.
CAUTION: The power input circuitry of the unit may be damaged if the installation does not conform to the
wiring instructions in this manual.
2.4.1 Installation Limitations
The conditions and tests for CAN TSO approval of the JA94-N44A are minimum performance standards. Those
installing the JA94-N44A, on or in a specific type or class of aircraft, must determine that the aircraft installation
conditions are within TSO standards. The JA94-N44A may be installed only by following the applicable
airworthiness requirements.
2.4.2 Cabling and Wiring
All wire 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

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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.
Allow 3” from the end of the shielded wiring to the shield termination to allow the connector hood to be easily installed.
Refer to the Interconnect drawing in Appendix A of this manual for shield termination details. Note that this unit has a
‘clamshell’ hood that is installed after the wiring is complete.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturer’s maintenance
instructions.
Refer to the Interconnect drawing for additional specifications. Check that the ground connection is clean and well
secured, and that it shares no path with any electrically noisy aircraft accessories such as blowers, turn-and-bank
instruments, or similar loads.
2.4.3 Mechanical Installation
The JA94-N44A can be mounted in any attitude and location with adequate space for the front panel and sufficient
clearance for the connector and wiring harness. It requires no direct cooling.
Note: During bench test set up, it is normal for the JA94-N44A chassis to become warm to the touch.
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 Legend Replacement
The JA94-N44A illuminated legends are field replaceable. For further information, refer to the ‘Legend Replacement’
document in Appendix A of this manual.
2.4.6 Post Installation Checks
2.4.6.1 Voltage/Resistance checks.
Do not attach this unit until the following conditions are met:
a) Check P1 pin 19 for lights buss voltage +28 Vdc +14 Vdc or +5 Vdc.
b) Check P2 pin 17 for +28 Vdc power relative to ground.
c) Check P2 pin 34 for continuity to ground (less than 0.5 Ω).
d) Check P2 pins 6 thru 10 for continuity to ground (less than 0.5 Ω) when the relevant switch is closed.
e) Check P3 all pins for continuity to ground (less than 0.5 Ω) when the relevant switch is closed or selection
made.
f) Check all pins for shorts to ground or adjacent pins.
2.4.6.2 Configuration
Ensure that the JA94-N44A contains the correct configuration settings. This may be done at the factory, on the
maintenance bench or in the aircraft before or during the power on checks. Refer to section 2.5.1.
2.4.6.3 Power on Checks.
Power up the aircraft’s systems and confirm normal operation of all functions of the JA94-N44A. Refer to
Section 3 (Operation) for specific operational details.

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a) Begin with only the Right user headset attached. Confirm correct ICS and radio operation for both receive and
transmit. Check yoke or cyclic switch action. Check the radio selection and inputs. Do not proceed until the
radios are functioning correctly.
b) If there is a music source in the system, turn it on and check for proper mute operation.
c) 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. If a transmitter fails to key or
correctly modulate it is often the result of not connecting all required grounds to the radio or external audio
system.
d) Check the ICS operation and Emergency operation.
e) Plug in the Left user headset. Check for correct ICS operation. Check yoke or cyclic switch functions.
f) Plug in any remaining headsets, and check for correct ICS operation. Note that an incorrect cordset (drop cord)
or improper jack wiring may cause a wide range of problems, from loss of audio to a tone heard in the headset.
g) Check that all configurations settings are correct.
When all performance checks are satisfied, complete the necessary regulatory documentation before releasing the
aircraft for service. Refer to Appendix B.
2.5 Adjustments and Configuration using ProCS™
All the JA94-N44A internal adjustments are set from the Product Configuration Software ProCS™. Configuration data
is sent to the JA94-N44A via the front panel connector (♫/io), using the Configuration Cables and a computer running
the ProCS™ software. For configuration requirements, see section 2.5.1.
For full information on the configuration process, and for installation of ProCS™ on your computer, refer to the
ProCS™ manual on the Jupiter Avionics website - www.jupiteravionics.com/productsoftware.
2.5.1 Configuration Cabling Requirements
To configure the JA94-N44A, it is necessary to load the Product Configuration Software ProCS™ onto a Windows-
based computer as described in the ProCS™ manual.
The cables required to configure the JA94-N44A are not included with the unit.
Cabling option 1:
Quantity Description JAC Part #
1 USB A to RS232 9-Pin Cable CAB-USB-0002
1 Configuration Cable JA99-001
Cabling option 2:
Quantity Description JAC Part #
1 USB A Male to RS232 3.5mm Plug CAB-USB-0006
2.5.2 ProCS™ Setup
The ProCS™ JA94-N44A menu item 'ProCS Setup' provides Setup drawings showing the cabling
arrangement for connecting the JA94-N44A to a computer running the ProCS™.
2.5.3 Configurable Settings
A standard unit is shipped from the factory with all internal adjustments configured to the default levels. At installation,
it may be desirable to change some of these settings to suit the local operating environment.

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Note: To properly configure the JA94-N44A, power must be applied, and the left TX Select switch must be in
the COM1, COM2, FM1, FM2, AUX or PA position (not EMER).
Within ProCS™, the configurable settings are grouped together into the following sections:
2.5.3.1 Front Panel Switches
The Front Panel Switches window is used to specify the text for each legend.
Note: If the name of a front panel switch is changed using this software, the change will be incorporated in
every other section that refers to that switch name, including the connector maps, to give truly customized
installation diagrams.
2.5.3.2 Radios
The Radios window is used to define the radios
for the transceivers, receivers and CVR.

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2.5.3.3 Receive Levels
The receive and direct audio input level of each of the eight RX and the three
DIRECT AUDIO inputs can be adjusted from 1 to 10 Vrms. (Default 7.75 Vrms)
The Receive Audio Detector threshold can be adjusted from
-36 to -12 dB of rated input level. (Default -24 dB)
The level of the receive composite audio output (RX COMP OUT)
can be adjusted from 0.25 to 2.5 Vrms. (Default 1.00 Vrms)

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2.5.3.4 Transmit Levels
When the Transmit Timeout check box is checked the transmit time-
out is enabled (Default not checked)
When the AUX Duplex check box is checked the AUX (FM2) radio is
set to duplex operation (Default not checked) (see section 3.3.4)
2.5.3.5 Simulcast Selection
The level of each of the six Transceiver MIC output signals can be
adjusted from 0.01 to 1 Vrms. (Default 250 mVrms)
When a User's PA Simulcast Enable button is checked,
the COM1, COM2, FM1, FM2 and AUX radios may be
selected for simulcast (active together).

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2.5.3.6 Sidetone Levels
2.5.3.7 Passenger Settings
Note: When Legacy Passenger ICS Mode is selected, the Passenger Mics are controlled by the VOX control
until the fully cw (PTT) position is reached. Then the Passenger Mics are automatically set to the minimum
VOX level and should be controlled by in-line PTT drop-cords.
2.5.3.8 Connector Pin Configuration
Several of the connector pins can be configured to meet the requirements of specific installations. Refer to JA94-
N44A Interconnect sheet 5 of 6. Direct Audio routing can also be selected in this section.
The Receive Sidetone Level can be adjusted from 0 to
-12 dB of the rated phone Level. (Default -6 dB)
The level of the PA Artificial Sidetone can be adjusted from
0 to -12 dB of the rated phone Level. (Default -6 dB)
ICS Isolation Mode can be selected for the Right User, Left User or Crew (both users).
Routing for DIRECT 1 and 2 can be selected as shown.
Passengers can be assigned to either the RIGHT or LEFT USER
controls and will hear the assigned user's Receive Audio.

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2.5.3.9 Audio Muting (During Transmit)
When the Mute RX Audio check box is checked the Receive
Audio is muted during transmit (Default checked)
When the Mute ICS Audio check box is checked the ICS
Audio is muted during transmit (Default checked)
The Mute Music Audio check box is always checked
(i.e. Mute Music Audio is always enabled.)
2.5.2.10 CVR Level
2.5.3.11 Music Levels
The output levels of the Cockpit Voice Recorder audio
may be adjusted as shown.
LEFT USER, RIGHT USER and Music Input Levels
may be individually adjusted.

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2.5.3.12 ICS Tie Line
The rated input and output levels of the intercom tie line can be selected as Type 1 or Type 2 (Default Type 2).
The quantity of external loads for a Type 1 intercom tie line can be selected from 0 to 3 (Default 0).
The quantity of external loads for a Type 2 intercom tie line can be selected from 0 to 7 (Default 0).
2.5.3.13 Lighting Voltage Selection
The rated input level for the lighting
voltage may be selected from
+5 Vdc, +14 Vdc or +28Vdc
(Default +28 Vdc).
2.5.3.14 VOX
2.5.3.15 Connector Maps
This section contains connector maps and interconnects that are automatically generated to show changes that affect
the installation of the JA94-N44A, such as switch labels and voltages. See section 2.7.1.
2.5.4 Other Configuration Features
In the JA94-N44A Product Information Window, the model number, serial number and check sum of the JA94-N44A
Dual Audio Controller can be viewed.
The VOX OFF Delay Time can be adjusted
from 0.50 to 2.00 sec (Default 1 sec).

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2.6 Installation Kit
The kit required to install this unit is not included with the unit.
The installation kit (Part # INST-JA94) consists of the following:
Quantity Description JAC Part #
1 15 Socket Positions, Zinc Plated, D-Subminiature - Crimp Socket Housing CON-3460-0115
1 37 Socket Positions, Zinc Plated, D-Subminiature - Crimp Socket Housing CON-3460-0137
1 50 Socket Positions, Zinc Plated, D-Subminiature - Crimp Socket Housing CON-3460-0150
1 15 Pin Clamshell, Hardware - Plastic D-Sub Hoods CON-5300-0115
1 37 Pin Clamshell, Hardware - Plastic D-Sub Hoods CON-5300-0137
1 50 Pin Clamshell, Hardware - Plastic D-Sub Hoods CON-5300-0150
102 Machined 20 to 24 AWG wire size range, MIL spec, D-Submin - Crimp Socket CON-3320-2024
3 For Any D-sub Connector, Hardware - Slide Locks - Vertical CON-5275-0050
2 0.625" Inside Diameter, Hardware - Tag Ring CON-5500-0625
2 1" Inside Diameter, Heat Shrink Tube WIR-HTSK-1000
2.6.1 Recommended Crimp tools
Tool Type
Hand crimp tool
Positioner
Insertion/extraction tool
Positronic
9507-0-0-0
9502-5-0-0
4711-2-0-0
Daniels
AFM8
K13-1
91067-2
MIL-SPEC
M22520/2-01
M22520/2-08
M81969/1-02
2.7 Installation Drawings
The drawings and documents required for Installation can be found in Appendix A of this manual.
2.7.1 Generation of Custom Drawings
The interconnects and connector maps in Appendix A of this manual are generic drawings based on the standard
version of the JA94-N44A. However, if a unit has been configured using JAC’s ProCS™ software to change switch
legends or lighting voltages, the software can be used to generate fully customized interconnects and connector
maps for use by the installer.

Rev A Page 16
JA94-N44A Dual Audio Controller - AMS44 Compatible - NVG
SECTION 3 – OPERATION
3.1 Introduction
This section contains the operating instructions for the JA94-N44A.
3.2 Front Panel Controls
Note: The 21 legends and 2 deadfront annunciators are removable and may be replaced with custom
ordered parts. For the purpose of this manual the controls will be referred to by the default legend and
annunciator names as shown below.
1. Left User Receive select switches, TX select annunciators and associated legends
2. Right User Receive select switches, TX select annunciators and associated legends
3. Left and Right User AUX and PA receive select switches, TX select annunciators and
associated legends
4. VOX threshold control
5. Left User Transmit Selector Switch and Emergency Switch
6. EMER (Emergency) Legend
7. Left User ICS/RX Volume control and legend
8. Right User Transmit Selector Switch
9. Music/configuration input connector cover (/io)
10. Left User ICS/RX Volume control and legend
11.Left User Transmit Deadfront Annunciator
12.Right User Transmit Deadfront Annunciator
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