Jupiter Avionics J301A-001 User manual

Rev B Page i
J301A-001
Audio Controller
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

J301A-001 Audio Controller
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
Jun 2020
Initial release, Serial number 1001 and higher.
2486
Prepared:
DGB
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
SRM
07-23-20 JAC
KDV
07-23-20

J301A-001 Audio Controller
Installation and Operating 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 .................................................................................................................................................. 2
1.3.1 Inputs............................................................................................................................................................... 2
1.3.2 Outputs ............................................................................................................................................................ 2
1.3.3 Bi-directional Ports .......................................................................................................................................... 2
1.3.4 Audio Loads .................................................................................................................................................... 2
1.3.5 Grounds........................................................................................................................................................... 3
1.4 Specifications .......................................................................................................................................................... 3
1.4.1 Electrical Specifications................................................................................................................................... 3
1.4.2 Mechanical Specifications ............................................................................................................................... 5
1.4.3 Flammability of Materials ................................................................................................................................ 5
SECTION 2 – INSTALLATION............................................................................................................................................... 6
2.1Introduction.............................................................................................................................................................. 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 ........................................................................................................................................................ 14
2.6.1 Recommended Crimp Tools ......................................................................................................................... 14
2.7 Installation Drawings ............................................................................................................................................. 14
2.7.1 Generation of Custom Drawings ................................................................................................................... 14
SECTION 3 – OPERATION.................................................................................................................................................. 15
3.1 Introduction............................................................................................................................................................ 15
3.2 Front Panel Controls ............................................................................................................................................. 15
(1) Transceiver Switches, Annunciators and Legends ....................................................................................... 16
(2) Receiver Switches and Legends ................................................................................................................... 16
(3) Music/Configuration Connector (♫/io) ........................................................................................................... 16
(4) Transmit Selector .......................................................................................................................................... 17
(5) EMER Position .............................................................................................................................................. 17
(6) Transmit Annunciator - TX ............................................................................................................................ 17
(7) ICS or RMT Position ..................................................................................................................................... 17
(8) Receive Volume Control ............................................................................................................................... 17
(9) ICS Volume Control....................................................................................................................................... 17
(10) Music and Private Intercom Select Switches (MUS and PVT) ..................................................................... 17
(11) VOX Threshold Control ................................................................................................................................. 18
3.3 Normal Operation Mode ........................................................................................................................................ 18
3.3.1 Panel Lighting................................................................................................................................................ 18
3.3.2 Receiving....................................................................................................................................................... 18
3.3.3 Transmitting (Transmit Operation) ................................................................................................................ 18
3.3.4 VOX Operation .............................................................................................................................................. 18
3.3.5 ICS Operation................................................................................................................................................ 19
3.3.6 COM7 PTT Operation ................................................................................................................................... 19
3.3.7 Music Operation ............................................................................................................................................ 19
3.3.8 COM8 Artificial Sidetone Operation .............................................................................................................. 19

J301A-001 Audio Controller
Installation and Operating Manual
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3.4 Emergency Operation Mode ................................................................................................................................. 19
3.4.1 Auto Emergency Mode.................................................................................................................................. 19
3.4.2 Selected Emergency Mode ........................................................................................................................... 19
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

Rev A Page 1
J301A-001 Audio Controller
SECTION 1 - DESCRIPTION
1.1 System Overview
The J301A-001 audio controller is a centralized management system that distributes and controls transceiver,
receiver and warning source audio for one user in an aircraft. It enables the selected transmission of microphone
audio to a transceiver and connects to the intercom audio bus.
The J301A-001 audio controller provides a passive emergency mode that directs the user to the COM 1 transceiver,
NAV1 receiver and all Direct Audio.
The J301A-001 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.
1.2 Features Overview
The J301A-001 has a 15 pin D-Min connector, which interfaces to the Direct audio and ICS Tie lines, a 50 pin D-Min
connector which interfaces to the Radios, power and user headset connections, and a 25 pin D-Min connector which
interfaces to music and extra transceivers. This layout follows industry standard interconnects for single-user single
transmit selector audio controllers. The front (faceplate) subassembly contains the user interface.
Numerous input and output levels are adjustable, several audio paths are selectable using the configuration tool
ProCS™ (Product Configuration Software) to write configuration commands via the JA99-001 configuration cable to
the front panel music / configuration connector.
The J301A-001 supports up to eight transceivers, each selectable from a rotary switch.
The J301A-001 supports up to six receivers.
The J301A-001 has intercom VOX operation.
The J301A-001 supports four Direct Audio inputs to provide audio at a fixed level to the user.
The J301A-001 has a CVR output.
A Music / Configuration connector is provided on the faceplate of the J301A-001 for configuration of audio levels and
routing. The connector can also be used as a music input and is compatible with most music players.
The J301A-001 has two modes of operation: Normal Mode and Emergency Mode.

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Installation and Operating Manual
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1.3 Inputs and Outputs
Refer to the J301A-001 connector maps for the mating connector designators and pin assignments for the
input and output signals.
1.3.1 Inputs
Name
Qty
Type
COM REMOTE TX SELECT
8
Audio signal (on expansion connector)
CONFIG DATA TO J301A
1
Data signal
CONFIG MODE SELECT
1
Multi format signal
DIRECT AUDIO 1-4 HI/LO
4
Audio signal
DYNAMIC MIC +/-
1
Audio signal
FRONT PANEL MUSIC R/L
2
Audio signal
HI LEVEL MIC HI/LO
2
Audio signal
LIGHTS
1
Analog control signal
MUSIC LEFT/RIGHT HI/LO
4
Audio signal
POWER INPUT
1
Power supply
RX HI
12
Audio signal
RX HI/LO
2
Audio signal (on expansion connector)
USER ICS PTT
1
Active low discrete
USER TX PTT
1
Active low discrete
1.3.2 Outputs
Name
Qty
Type
COM MIC HI
6
Audio signal
COM MIC HI
2
Audio signal (on expansion connector)
CONFIG DATA FROM J301A
1
Data signal
CVR HI/LO
2
Audio signal
COM KEY
6
Active low discrete
COM KEY
2
Active low discrete (on expansion connector)
RX COMPOSITE HI/LO
1
Audio signal
USER 600 OHM PHN
1
Audio signal
USER 8 OHM PHN HI/LO
1
Audio signal
1.3.3 Bi-directional Ports
Name
Qty
Type
INTERCOM AUDIO
1
Audio signal
JAC ICS TIE HI/LO
1
Audio signal
PVT INTERCOM AUDIO HI/LO
1
Audio signal
1.3.4 Audio Loads
Name
Qty
Type
150 OHM LOAD 1 and 2
2
Termination
INTERCOM LOAD
1
Termination
PVT INTERCOM LOAD
1
Termination
RX 600 OHM LOAD
4
Termination

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Installation and Operating Manual
Rev A Page 3
1.3.5 Grounds
Name
Qty
Type
CHASSIS GROUND
1
Airframe ground connection
POWER GROUND
1
Power ground
RX COMMON
1
Audio signal ground
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
Input current at 9 Vdc ≤ 2.4 A
1.4.1.1 Audio Performance
Rated Input Level
Receive audio rated input level 4.5 Vrms ±10%
Direct audio rated input level 4.5 Vrms ±10%
Music rated input level 400 mVrms ±10%
HI level Microphone input level 250 mVrms ±10%
Dynamic Microphone input level 250 uVrms ±10%
JAC ICS Tie Line type 1 input level 340 mVrms ±10%
JAC ICS Tie Line type 2 input level 1.20 Vrms ±10%
Interphone input level 2.80 Vrms ±10%
PVT Interphone input level 2.80 Vrms ±10%
Rated Output Level
600 OHM PHONE rated output 12.3 Vrms±10%
8 OHM PHONE rated output 1.42 Vrms±10%
600 OHM PHONE rated output,
in emergency mode or with power input ≤6 Vdc 2.10 Vrms±10%
600 OHM PHONE rated output power,
with MUSIC input 6.14 Vrms±10%
600 OHM PHONE rated output power, in Emergency mode
or with power input <= power off voltage 3.0 Vrms±10%
COM MIC 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 HI LEVEL MIC 1.00 Vrms±10%
CVR rated output, in emergency mode, 500 mVrms ±10%
RX Composite rated output 2.50 Vrms ±10%
JAC ICS Tie type 1 rated output 340 mVrms ±10%
JAC ICS Tie type 2 rated output 1.20 Vrms ±10%
INTERPHONE rated output 2.80 Vrms ±10%
PVT INTERPHONE rated output 2.80 mVrms ±10%
Audio Frequency Response
Audio output audio frequency response ≤3dB from 300 to 6000 Hz

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Installation and Operating Manual
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Distortion Characteristics
Audio output distortion at rated power ≤10% THD + N
Input Impedance
HI LEVEL MIC input Impedance 150 Ω±10%
DYNAMIC MIC input Impedance 5 Ω±40%
Direct Audio input Impedance 10 kΩ±10%
Receive Audio input Impedance 10 kΩ±10%
Music Audio input Impedance 1000 Ω±10%
JAC ICS TIE 2000 Ω±10%
INTERCOM Audio input Impedance 19 kΩ±10%
PVT INTERCOM Audio input Impedance 19 kΩ±10%
Output Load
600 OHM PHN load 600 Ω±10%
8 OHM PHN load 8 Ω±10%
COM MIC load 150 Ω±10%
CVR load 5000 Ω±10%
RX Composite Audio load 600 Ω±10%
JAC ICS TIE type 1 rated load 2000 Ω±10%
JAC ICS TIE type 2 rated load 2000 Ω±10%
INTERCOM rated load 600 Ω±10%
PVT INTERCOM rated load 600 Ω±10%
JAC ICS TIE type 1 maximum load 666 Ω±10%
JAC ICS TIE type 2 maximum load 285 Ω±10%
Volume Controls
Receive Audio control variation 32 ±3dB
ICS Audio control variation 42 ±3dB
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
1.4.1.2 Audio Performance, Other
CVR HI / LO output circuitry type (Normal) differential
CVR HI / LO output circuitry type (Emergency) single ended
HI LEVEL MIC inputs designed for MIC type amplified dynamic /electret
DYNAMIC MIC inputs designed for MIC type 5 ohm dynamic
HI LEVEL MIC inputs circuitry 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
600 OHM PHN HI / LO output circuitry type balanced
8 OHM PHN HI / LO output circuitry type balanced
MIC output circuitry type single ended
RX Composite Audio output circuitry type differential
ICS TIE HI / LO Circuitry Type differential

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Installation and Operating Manual
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INTERCOM HI / LO Circuitry Type single ended
PVT INTERCOM Circuitry Type single ended
Fade-in duration for PHN Audio output music signal 2.5 ±1.0 s
VOX Threshold control range -30 to +12 dB
VOX Off Delay Time accuracy shall be ± 0.25 s
Receive Audio detect threshold control range, relative to
rated receive audio input -36 to -12 dB
1.4.1.4 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 0.1 to 10 mA
Active low control output, active output ≤+2 Vdc
Active low control output, active, current ≤1 A
1.4.1.5 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 2.625 in [67.7 mm] max
Behind panel depth 3.42 in [86.9 mm] max
Faceplate width 5.75 in [146 mm] max
Behind panel width 4.92 in [125 mm] max
Weight 1.64 lb [0.74 kg] max
Material brushed aluminum with conversion
coating
Connectors (5): Main J1 One 50-pin D-Sub male
Direct Audio J2 One 15-pin D-Sub male
Expansion J3 One 25-pin D-Sub male
Music/Configuration J4 One 4 pole 3.5mm stereo jack
Chassis Ground J5 One 4-40 stud
Mounting 4 Dzus fasteners
Bonding ≤2.5 mΩ
Installation kit part number INST-J301A
Faceplate white legends on black
1.4.3 Flammability of Materials
The J301A-001 complies with the requirements of RTCA/DO-160G Sec 26.3.3 "Flammability", through equivalent
flammability testing of materials and the Small Parts Exemption.

Rev A Page 6
J301A-001 Audio Controller
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 J301A-001 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
This product manufactured by JAC is 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
Those installing the J301A, on or in a specific type or class of aircraft, must determine that the aircraft installation
conditions meet standards. The J301A 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.