Jupiter Avionics JA95-091 User manual

JA95-091
Audio Controller - Dual ICS Input
Installation and Operating Manual
Rev A
Jupiter Avionics Corporation
1959 Kirschner Road
Kelowna BC
Canada V1Y 4N7
Tel: [phone]
Toll-Free: 855-478-2232
www.jupiteravionics.com

JA95-091 Audio Controller - Dual ICS Input
Installation and Operating Manual
Rev A Page ii
Copyright 2020 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
Mar 2020
Initial release, Serial number 1001 and higher.
7086
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
KDV
04-17-20 JAC
MQS
05-05-20

JA95-091 Audio Controller - Dual ICS Input
Installation and Operating Manual
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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 Configuration Connector........................................................................................................................... 6
1.4.4 Product Configuration Software Version .................................................................................................. 6
1.4.5 Flammability of Materials .......................................................................................................................... 6
SECTION 2 – INSTALLATION ........................................................................................................................................ 7
2.1 Introduction ....................................................................................................................................................... 7
2.2 Continued Airworthiness................................................................................................................................... 7
2.3 Unpacking and Inspecting Equipment .............................................................................................................. 7
2.3.1 Warranty ....................................................................................................................................................... 7
2.4 Installation Procedures ..................................................................................................................................... 7
2.4.1 Installation Limitations .................................................................................................................................. 7
2.4.2 Cabling and Wiring ....................................................................................................................................... 7
2.4.3 Mechanical Installation ................................................................................................................................. 8
2.4.4 In-Line PTT Cordsets.................................................................................................................................... 8
2.4.5 Legend Replacement.................................................................................................................................... 8
2.4.6 Post Installation Checks ............................................................................................................................... 8
2.5 Adjustments and Configuration using ProCS™ ............................................................................................... 9
2.5.1 Configuration Cabling Requirements........................................................................................................ 9
2.5.2 ProCS™ Setup ......................................................................................................................................... 9
2.5.3 Configurable Settings ............................................................................................................................... 9
2.5.4 Other Configuration Features ................................................................................................................. 16
2.6 Installation Kit ................................................................................................................................................. 17
2.6.1 Recommended Crimp tools .................................................................................................................... 17
2.7 Installation Drawings....................................................................................................................................... 17
2.7.1 Generation of Custom Drawings ............................................................................................................ 17
SECTION 3 – OPERATION ........................................................................................................................................... 18
3.1 Introduction ..................................................................................................................................................... 18
3.2 Front Panel Controls....................................................................................................................................... 18
(1) Transceiver Switches.................................................................................................................................. 19
(2) Receiver Switches ...................................................................................................................................... 19
(3) Music Control Switch .................................................................................................................................. 19
(4) Receive Volume Control ............................................................................................................................. 19
(5) Mode Switch ............................................................................................................................................... 19
(6) Multi-function (Transmit/ICS) Switch .......................................................................................................... 20
(7) Music/Configuration Connector (♫/io) ........................................................................................................ 20
(8) Transmit Annunciator - TX.......................................................................................................................... 20
(9) Transmit Selector........................................................................................................................................ 20
(10) PA Legend .................................................................................................................................................. 21
(11) VOX Threshold Control............................................................................................................................... 21
(12) CALL Annunciator....................................................................................................................................... 21
(13) ICS Volume Control .................................................................................................................................... 21

JA95-091 Audio Controller - Dual ICS Input
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3.3 Normal Operation Mode ................................................................................................................................. 22
3.3.1 Panel Lighting ......................................................................................................................................... 22
3.3.2 Receiving ................................................................................................................................................ 22
3.3.3 Transmitting (Transmit Operation).......................................................................................................... 22
3.3.4 FM2 PTT Operation ................................................................................................................................ 22
3.3.5 VOX Operation ....................................................................................................................................... 22
3.3.6 ICS Operation ......................................................................................................................................... 22
3.3.7 Multi-Function (XMIT / ICS) Switch Operation........................................................................................ 23
3.3.8 Music Operation...................................................................................................................................... 23
3.4 Emergency Operation Mode........................................................................................................................... 23
3.4.1 Auto Emergency Mode ........................................................................................................................... 23
3.4.2 Selected Emergency Mode..................................................................................................................... 23
Appendix A - Installation Drawings ........................................................................................................................... A1
A1 Introduction .....................................................................................................................................................A1
A2 Installation Drawings.......................................................................................................................................A1
Appendix B - Certification Documents...................................................................................................................... B1
B1 Airworthiness Approval ...................................................................................................................................B2
B2 Instructions for Continued Airworthiness ........................................................................................................B2
B3 Environmental Qualification Form ..................................................................................................................B3

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JA95-091 Audio Controller - Dual ICS Input
SECTION 1 - DESCRIPTION
1.1 System Overview
The JA95-091 Audio Controller - Dual ICS Input is a centralized audio management system that distributes and
controls all transceiver, receiver and alert audio in an aircraft. It enables the selected transmission of microphone
audio to a transceiver and distributes all intercom audio.
The JA95-091 Audio Controller - Dual ICS Input 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 primary user (pilot) to the COM1 transceiver, NAV1 receiver and Direct Audio receiver.
The JA95-091 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 (♫/io)
without the necessity of removing the unit from the panel.
1.2 Features Overview
The JA95-091 features a 37-pin D-Sub connector, which interfaces with the radio receive audio and crew phones, a
50-pin D-Sub connector which interfaces with the power and passenger headset connections. This layout minimizes
crosstalk and follows industry standard interconnect for multi-user Audio Controllers.
Many of the input and output levels are adjustable, several audio paths are selectable, and alert audio analog
waveforms can be loaded using the configuration program ProCS™ (Product Configuration Software) to write
configuration commands via the JA99-001 configuration cable to the front panel music / configuration connector. The
audio waveforms are stored in non-volatile devices. The alert audio feature is intended for use as a secondary alerting
system where another device provides the primary annunciation.
The JA95-091 provides intercom functions for up to seven users. It supports up to 5 transceivers and a PA position,
each selectable from a rotary switch, and up to 4 receivers (2 on each of 2 toggle switches).
The JA95-091 features individual VOX gating, and supports one Direct Audio input to provide audio at a fixed level to
the users.
The JA95-091 has a CVR output and a three channel Alert Generator. Each alert has a separate key input.
The JA95-091 allows transmit access for four crew members (Pilot, Co-pilot, Passenger 1 and Passenger 2).
A Music / Configuration connector is provided on the faceplate of the JA95 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 JA95-091 supports two unidirectional ICS inputs and one output.
The JA95-091 has a Music Select switch.
The JA95-091 has two modes of operation: Normal Mode and Emergency Mode.

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1.3 Inputs and Outputs
Refer to the JA95-091 connector maps for the mating connector designators and pin assignments for the
input and output signals.
1.3.1 Inputs
Name
Qty
Type
ALERT ENABLE
1
Active high discrete
ALERT KEY
3
Active low discrete (selected via ProCS)
CALL
1
Active low discrete (selected via ProCS)
CONFIG DATA TO JA95
1
Data signal
DIRECT AUDIO
1
Audio signal
FRONT PANEL MUSIC
2
Audio signal
ICS INPUT 1/2 HI/LO
2
Audio signal
LIGHTS INPUT
2
Analog control signal
MIC
7
Audio signal
MODE SELECT / CONFIG AUDIO
1
Multi format signal
MUSIC
2
Audio signal
PAX 1 and PAX 2 ICS PTT
2
Active low discrete (selected via ProCS)
PAX 1 and PAX 2 TX PTT
2
Active low discrete (selected via ProCS)
PILOT and COPILOT ICS PTT
2
Active low discrete
PILOT and COPILOT TX PTT
2
Active low discrete
POWER INPUT
1
14 to 28 Vdc power supply
RX HI/LO
9
Audio signal (5 COM, 4 NAV)
1.3.2 Outputs
Name
Qty
Type
CVR
1
Audio signal
CONFIG DATA FROM JA95
1
Data signal
ICS OUTPUT HI/LO
1
Audio signal
PHONES 7 Audio signal
Note: There are 6 outputs for driving 7 phones.
MF SW (Multifunction Switch)
2
Active low discrete (selected via ProCS)
MIC
6
Audio signal
PTT
6
Active low discrete
(PA PTT feature selected from ProCS)
RX COMP OUT
1
Audio signal (selected via ProCS)
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
Secondary nominal voltage 14 Vdc
Maximum voltage 32.2 Vdc
Minimum voltage 10.2 Vdc
Emergency voltage 9.0 Vdc
Input current at 28 Vdc ≤ 0.7 A
Input current at 14 Vdc ≤ 1.4 A
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%
ICS INPUT 1 input level 7.75 Vrms ±10%
ICS INPUT 2 input level 1.2 Vrms ±10%
Intercom Tie Line type 1 input level 340 mVrms ±10%
Intercom Tie Line type 2 input level 1.20 Vrms ±10%
CONFIG AUDIO input level 400 mVrms ±10%
Rated Output Level
Phone rated output 7.75 Vrms±10%
Pilot Phone rated output,
in emergency mode or with power input ≤6 Vdc 2.20 Vrms±10%
Phone rated output power,
with MUSIC input 3.88 Vrms±10%
Microphone rated output 250 mVrms±10%
CVR rated output 500 mVrms±10%
CVR rated output with input as MUSIC 250 mVrms±10%
CVR rated output with input as PILOT MIC 1.00 Vrms±10%
CVR rated output, in emergency mode, 500 mVrms ±10%
Receive Composite rated output 2.5 Vrms ±10%
ICS OUTPUT rated output 1.2 Vrms ±10%
Intercom Tie Line type 1 rated output 340 mVrms ±10%
Intercom Tie Line type 2 rated output 1.2 Vrms ±10%
Audio Frequency Response
Audio output audio frequency response ≤3dB from 300 to 6000 Hz
Alert audio output audio frequency response ≤3dB from 300 to 3000 Hz
Distortion Characteristics
Audio output distortion at rated power ≤10%
Audio output distortion at 10% of rated power ≤3%

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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%
ICS INPUT 1&2 input Impedance 1000 Ω±10%
Output Impedance
Phone output Impedance ≤60 Ω
Transceiver Microphone output Impedance ≤80 Ω
CVR output Impedance ≤80 Ω
Receive Composite Audio output Impedance ≤80 Ω
ICS OUTPUT 1&2 output Impedance 2000 Ω±20%
Output Load
Phone load 600 Ω±10%
Transceiver Microphone load 150 Ω±10%
CVR load 5000 Ω±10%
Receive Composite Audio load 600 Ω±10%
ICS OUTPUT rated load 1000 Ω±10%
ICS OUTPUT maximum load 150 Ωmax
Volume Controls
Receive Audio control variation 32 ±3dB
ICS Audio control variation 42 ±3dB
Output Regulation
Output Regulation change in voltage level ≤3 dB
Output Regulation distortion ≤10%
Input to output Crosstalk and Bleed-through Level
Input to Output crosstalk ≤55 dB
Input to Input Crosstalk Level
Input to Input crosstalk ≤60 dB
Audio Noise Level without Signal
Noise level below the rated output ≥60 dB

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1.4.1.2 Audio Performance, Other
CVR HI / LO output circuitry type (Normal) differential
CVR HI / LO output circuitry type (Emergency) single ended
ICS INPUT 1&2 input circuitry type differential
ICS OUTPUT 1&2 output circuitry type differential
Microphone inputs designed for MIC type amplified dynamic
Microphone inputs bias voltage 11 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 40 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 -30 to +12 dB
VOX Delay Time range 0.5 to 2.0 seconds
Transmit Timer duration 90 ± 30 seconds
1.4.1.3 Discrete Signals
Active low control input, active signal level ≤+3 Vdc
Active low control input, inactive signal level ≥+10 Vdc
Active low control input, current ≤10 mAdc
Active low control output, active output ≤+2 Vdc
Active low control output, active, current ≤1 Adc
ALERT ENABLE signal active signal level ≥+9 Vdc
ALERT ENABLE signal, when active, sinks ≤10 mAdc
ALERT ENABLE signal inactive signal level ≤+3 Vdc
1.4.1.4 Lights Input
LIGHTS INPUT ranges 0 to 28, 0 to 14 and 0 to 5 Vdc
LIGHTS INPUT current 10 mA max.
1.4.2 Mechanical Specifications
Height 1.875 in [47.63 mm] max
Behind panel depth 5.48 in [139 mm] max
Faceplate width 5.75 in [146 mm] max
Behind panel width 5.00 in [127 mm] max
Weight 1.64 lbs. [0.74 kg] max
Material brushed aluminum with conversion
coating
Connectors (3): One 4 pole 3.5mm stereo jack
One 37-pin D-Sub male
One 50-pin D-Sub male
Mounting 4 Dzus fasteners
Bonding ≤2.5 mΩ
Installation kit part number INST-JA95
Faceplate white legends on black
Faceplate legend colour, luminance white, 1 ± 0.5 fL

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1.4.3 Configuration Connector
The JA95-091 configuration connector communication standard for CONFIG DATA TO JA95 data input signal and
CONFIG DATA FROM JA95 data output signal is RS-232.
1.4.4 Product Configuration Software Version
Configuration of the JA95-091 requires the Product Configuration Software (ProCS) version v0.66.1 or later. Refer to
the release notes from http://www.jupiteravionics.com/productsoftware.php or contact Jupiter Avionics to ensure the
correct version is used.
1.4.5 Flammability of Materials
The JA95-091 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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JA95-091 Audio Controller - Dual ICS Input
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 JA95-091 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/warrantyregistration.
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 JA95-091 are minimum performance standards. Those
installing the JA95-091, on or in a specific type or class of aircraft, must determine that the aircraft installation
conditions are within TSO standards. The JA95-091 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
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.

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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.
Unless otherwise noted, all wiring shall be a minimum of 24 AWG, except power and ground lines, which shall be a
minimum of 22 AWG. 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 JA95-091 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.
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 JA95-091 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.
b) Check P2 pin 17 for +28 Vdc or +14 Vdc relative to ground.
c) Check P2 pin 34 for continuity to ground (less than 0.5 Ω).
d) Check P2 pins 6 thru 13 for continuity to ground (less than 0.5 Ω) when the relevant switch is closed.
e) Check all pins for shorts to ground or adjacent pins.
2.4.6.2 Configuration
Ensure that the JA95-091 contains the correct configuration settings. This may be done at the factory, on the
maintenance bench or in the aircraft before the power on checks are performed. 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 JA95-091. Refer to
Section 3 (Operation) for specific operational details.
a) Begin with only the pilot’s 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 co-pilot’s headset. Check for correct ICS operation. Check yoke or cyclic switch functions.

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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 JA95-091 internal adjustments are set from the Product Configuration Software ProCS™. Configuration data is
sent to the JA95-091 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 JA95-091, 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 JA95-091 are not included with the unit.
Quantity Description JAC Part #
1 USB A to RS232 9-Pin Cable CAB-USB-0002
1 Configuration Cable JA99-001
2.5.2 ProCS™ Setup
The ProCS™ JA95-091 menu item 'ProCS Setup' provides a Setup drawing showing the cabling arrangement
for connecting the JA95-091 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.
Note: To configure the JA95-091, power must be applied to the unit, and the mode (EMER/NORM) switch
must be in the NORM position
Within ProCS™, the configurable settings are grouped together into the following sections:

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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 and receivers.

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2.5.3.3 Receive Levels
The receive and direct audio input level of each of the eleven RX and the
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 FM2 Duplex check box is checked the COM5 (FM2) radio is
set to duplex operation (Default not checked) (see section 3.3.4)
2.5.3.5 Sidetone Levels
The level of each of the six Transceiver MIC output signals can be
adjusted from 0.01 to 1 Vrms. (Default 250 mVrms)
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 -30 dB of the rated phone Level. (Default -10 dB)

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2.5.3.6 Connector Pin Configuration
Multi-Function Switch
The front panel multi-function switch is a green two-position momentary centre-off switch. Its default configuration
is as the pilot’s PTT switch, with ‘XMIT’ in the up position, and ‘ICS’ in the down position. However, it may be
configured to provide a ground to operate different circuitry to suit the needs of the user, and an appropriate
legend can be inserted.
Several of the connector pins can be configured to meet the requirements of specific installations.
Refer to JA95-091 Interconnect sheet 5 of 5.

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2.5.3.7 Alerts
Warning: The internal audio alerts are intended only to supplement, not replace, airframe alerts such as ‘low
rotor RPM’, ‘engine out’ or ‘decision height alerting’. The alert audio feature is intended for use as a
secondary alerting system where another device provides the primary annunciation.
Audio Files
The JA95-091 has standard audio signals for each of the three alerts, and the audio files window allows these
signals to be customized with other recordings during the configuration process.
The default Alert signals loaded into the unit at the factory are:
JA95-091 Wav File (Sine 300Hz 10 sec) Rev A.WAV
JA95-091 Wav File (Sine 1000Hz 10 sec) Rev A.WAV
JA95-091 Wav File (Sine 3000Hz 10 sec) Rev A.WAV
Saving new Audio Files
If a new audio file is selected, it may be played using the arrow
to the right of the Message line.
It may be uploaded to the JA95-091 using the 'Program' menu
and selecting 'Program JA95-091 Messages…'.
Note that this pane will have different content if a JA95-091 is
not connected.
The levels of the three Alert Audio signals are individually adjustable
from 0 to -40 dB of the rated phone level.(Default -12 dB)

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2.5.3.8 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)
When the Mute Alert Audio check box is checked the
Alert Audio is muted during transmit
(Default not checked)
The Mute Music Audio check box is always checked
(i.e. Mute Music Audio is always enabled.)
2.5.3.9 CVR Level
2.5.3.10 Music Levels
The 'Configure MUS Switch as Rear Music Selector' check box is
always checked (Default).
The output levels of the Cockpit Voice Recorder audio
may be adjusted as shown.
The Music Input Levels may be adjusted from 0.10 to 1.00 Vrms.
(Default 0.40 Vrms)
The music output level of the four Music input signals to the
Phones audio can be adjusted from -40 to 0 dB of rated phone
level (Default 0 dB).
The attenuation level during muting of the music signal can be
adjusted from 0 to -40 dB (Default -40 dB).

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2.5.3.11 ICS Tie Line
2.5.3.12 Lighting Voltage Selection
The rated input level for the lighting voltage
may be selected from
+5 Vdc, +14 Vdc or +28Vdc
(Default +28 Vdc).
2.5.3.13 VOX
When the PAX Drop Cord Enable check box is checked, the VOX circuits for the passenger microphones are
configured for use with drop cords (Default not checked)
2.5.3.14 Connector Maps
This section contains connector maps and interconnects that are automatically generated to show changes that affect
the installation of the JA95-091, such as switch labels and voltages. See section 2.7.1.
2.5.4 Other Configuration Features
The model number, serial number and check sum of the JA95-091 Audio Controller - Dual ICS Input can be entered
and viewed in the Comments pane of the JA95-091 Product Information Window for future reference.
The VOX OFF Delay Time can be adjusted
from 0.50 to 2.00 sec (Default 1 sec).