Jupiter Avionics JA35-100 User manual

Rev
B Page i
JA35-100 Audio Summing Amplifier –
Remote Mount
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

JA35-100 Audio Summing Amplifier - Remote Mount
Installation and Operating Manual
Rev A Page ii
Copyright 2019 Jupiter Avionics Corp.
All rights reserved
Jupiter Avionics Corporation (JAC) permits a single copy of this manual to be printed or downloaded for the express use
of an installing agency. Any such electronic or printed copy of this manual must contain the complete text of this copyright
notice. Any unauthorized commercial distribution of this manual is strictly prohibited. Except as described above, no part
of this manual may be reproduced, copied, transmitted, disseminated, downloaded, or stored in any storage medium for
any purpose without the express prior written consent of JAC.
RECORD OF REVISIONS
Revision
Rev Date
Description
ECR
A
Mar 2019
Initial release, Serial number 1001 and higher.
5285
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
AH
04-01-19 JAC
KDV
04-01-19

JA35-100 Audio Summing Amplifier - Remote Mount
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 .................................................................................................................................................. 1
1.3.1 Inputs............................................................................................................................................................... 1
1.3.2 Outputs ............................................................................................................................................................ 1
1.4 Specifications .......................................................................................................................................................... 1
1.4.1 Electrical Specifications................................................................................................................................... 1
1.4.2 Mechanical Specifications ............................................................................................................................... 2
1.4.3 Product Configuration Software Version ......................................................................................................... 2
SECTION 2 – INSTALLATION............................................................................................................................................... 3
2.1 Introduction.............................................................................................................................................................. 3
2.2 Continued Airworthiness ......................................................................................................................................... 3
2.3 Unpacking and Inspecting Equipment..................................................................................................................... 3
2.3.1 Warranty.............................................................................................................................................................. 3
2.4 Installation Procedures............................................................................................................................................ 3
2.4.1 Installation Limitations ......................................................................................................................................... 3
2.4.2 Cabling and Wiring .............................................................................................................................................. 3
2.4.3 Mechanical Installation ........................................................................................................................................ 4
2.4.4 Post Installation Checks ...................................................................................................................................... 4
2.5 Adjustments and Configuration using ProCS™ ...................................................................................................... 4
2.5.1 Configuration Cabling Requirements .............................................................................................................. 4
2.5.2 ProCS™ Setup................................................................................................................................................ 5
2.5.3 Configurable Settings ...................................................................................................................................... 5
2.5.4 JA35-100 Settings ........................................................................................................................................... 5
2.5.5 Aircraft Audio System List ............................................................................................................................... 8
2.6 Installation Kit .......................................................................................................................................................... 8
2.6.1 Recommended Crimp tools............................................................................................................................. 8
2.7 Installation Drawings ............................................................................................................................................... 8
SECTION 3 – OPERATION .................................................................................................................................................... 9
3.1 Introduction.............................................................................................................................................................. 9
3.2 Emergency/Normal Mode Operation....................................................................................................................... 9
3.3 System Operation.................................................................................................................................................... 9
3.3.1 Normal Mode of Operation .............................................................................................................................. 9
3.3.2 Emergency Mode Operation ........................................................................................................................... 9
3.3.3 Audio Input Combined Operation.................................................................................................................... 9
3.3.4 Audio Input Split Operation ............................................................................................................................. 9
3.3.5 Audio Input Combined Priority Operation ....................................................................................................... 9
3.3.6 Audio Input Split Priority Operation ................................................................................................................. 9
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

Rev A Page 1
JA35-100 Audio Summing Amplifier - Remote Mount
SECTION 1 - DESCRIPTION
1.1 System Overview
The JA35-100 audio summing amplifier is a six channel bulkhead mounted isolation audio amplifier with separate
level controls for each channel. It provides two summed output channels with individual level controls, and two
emergency bypass channels for critical audio sources.
The JA35-100 is set up on a per-installation basis using a configuration cable and a PC running the (ProCS) product
configuration tool to download system configuration settings via the configuration connector.
1.2 Features Overview
All JA35-100 internal settings are quickly adjusted using the proprietary ProCS (Product Configuration Software). The
configuration commands set the level of non-volatile digital control potentiometers to control audio signal levels and to
non-volatile expander latches which are connected to audio gates to control the audio signal routing.
The JA35-100 audio summing amplifier provides differential receive audio inputs for high common mode noise
rejection.
The JA35-100 has two modes of operation: Normal Mode and Emergency Mode
1.3 Inputs and Outputs
Refer to the JA35-100 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 JA35-100
1
Data signal
NORM MODE SELECT
1
Multi format signal
POWER INPUT
1
Power supply
INPUT HI/LO
12
Audio signal
1.3.2 Outputs
Name
Qty
Type
OUTPUT HI/LO
2
Audio signal
CONFIG DATA FROM JA35-100
1
Data signal
1.4 Specifications
1.4.1 Electrical Specifications
Power Input
Nominal input voltage 28 Vdc
Maximum voltage 30.3 Vdc
Minimum voltage 22.0 Vdc
Emergency voltage 18.0 Vdc
Maximum current 1 A max

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1.4.1.1 Audio Performance
Rated Input Level
Audio input rated level 7.75 Vrms ±10%
Rated Output Level
Audio output rated level 7.75 Vrms ±10%
Audio output rated level in EMERG mode 7.75 Vrms ±10%
Audio Frequency Response
Audio output level varies ≤3dB from 300 to 6000 Hz
Distortion Characteristics
Audio output distortion at rated power ≤10%
Input Impedance
Audio input Impedance 1000 Ω±10%
Output Load
Rated audio output load 600 Ω
Output Impedance
Phone output Impedance 300 Ω±10%
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
Input circuitry type (Normal) differential
Input circuitry type (Emergency) single ended
Output circuitry type single ended
1.4.2 Mechanical Specifications
Height 1.27 in [32.3 mm] maximum
Depth 4.42 in [112.3 mm] maximum
Width 4.52 in [114.8 mm] maximum
Weight 0.55 lb [0.25 kg] max
Mounting Four 10-32 screws
Material brushed aluminum with conversion
coating
Connectors (2): One 4 pole 3.5mm stereo jack
One 25-pin D-Sub male
Mounting 4 x 10-32 fasteners
Bonding ≤2.5 mΩ
Installation kit part number INST-JA35
1.4.3 Product Configuration Software Version
Configuration of the JA35-100 requires the Product Configuration Software (ProCS) version v0.61.5 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.

Rev A Page 3
JA35-100 Audio Summing Amplifier - Remote Mount
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 JA35-100 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
The JA35 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.

JA35-100 Audio Summing Amplifier - Remote Mount
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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 JA35-100 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 Post Installation Checks
2.4.4.1 Voltage/Resistance checks.
Do not attach this unit until the following conditions are met:
a) Check P1 pin 1for +28 Vdc relative to ground.
b) Check P1 pins 14 and 15 for continuity to ground (less than 0.5 Ω).
c) Check all pins for shorts to ground or adjacent pins.
2.4.4.2 Configuration
Ensure that the JA35-100 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.
2.4.4.3 Power on Checks.
Power up the aircraft’s systems and confirm normal operation of all functions of the JA35-100. Refer to
Section 3 (Operation) for specific operational details.
a) Unusual buzzes, hums or other background audio are symptomatic of multiple grounds, or noisy external
systems such as blowers or pumps sharing wiring with the audio system.
b) Check Emergency operation.
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 JA35-100 internal adjustments are set from the Product Configuration Software ProCS™. Configuration data is
sent to the JA35-100 via the configuration connector J2, 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 JA35-100, 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 JA35-100 are not included with the unit.

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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 JA35 menu items 'ProCS Setup' provide Setup drawings showing the cabling arrangements for
connecting the JA35 to a computer to allow configuration using 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 JA35-100, power must be applied.
Within ProCS™, the configurable settings are grouped into the following sections:
2.5.4 JA35-100 Settings

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The diagram above shows a typical JA35-100 Settings screen, showing GROUP MODE selected as Combined, and
PRIORITY OUTPUT 1 and PRIORITY OUTPUT 2 both selected Off. Group Modes (section 2.5.4.4) and Priority
settings (section 2.5.4.5) will be described below.
The Settings window is divided into three sections: the Source Selection; the Audio Summing Amplifier; and the
Aircraft Audio System.
•Source Selection
•JA35-100 Audio Summing Amplifier Adjustments
•Aircraft Audio System
Each section is colour-coded to keep the relevant information together.
2.5.4.1 Source Selection (Green block)
The appropriate audio sources (Source 1 thru Source 6) are selected from drop-down lists in this block, and all relevant
configuration information is added automatically. Other sources can be added to the list (see section 2.5.5).
2.5.4.2 JA35-100 Audio Summing Amplifier Adjustments (Blue block)
The blue blocks (labelled GROUP1 and GROUP 2) refer to the adjustments and settings for the JA35-100 Audio
Summing Amplifier. Defaults can be restored by clicking on the ‘Default Level’ buttons.
Input
The level of each INPUT may be adjusted from 1.5 to 10.0 Vrms. (Default 7.8 Vrms)
Threshold
The input THRESHOLD for Inputs 1-5 may be adjusted from -40 to 0 dB (Default -20 dB) when PRIORITY OUTPUTS are On.
The input THRESHOLDS cannot be adjusted when PRIORITY OUTPUTS are Off,
Detector Off Delay
The DETECTOR OFF DELAY may be adjusted from 0.5 to 2.0 s. (Default 1.0 s)
Output Level
The level for OUTPUTS 1 and 2 may be adjusted from -35 to 0 dB. (Default 0 dB)
Group 1 and 2 Priority (See 2.5.4.4)
The priority for GROUP 1 and 2 PRIORITY may be selected as On or Off.
Group Mode (See 2.5.4.5)
The groups may be either Split or Combined (Default Combined).
Mute Depth (See 2.5.4.6)
In PRIORITY OUTPUT On mode, the mute depth Output for each Group may be adjusted from -60 to 0 dB. (Default -40 dB)
2.5.4.3 Aircraft Audio System Selection (Orange block)
The Aircraft Audio System is selected from a drop-down list at the top of the block, and all relevant configuration
information is added automatically. Other Audio Systems can be added to the list (see section 2.5.5).
2.5.4.4 Group Modes
The audio inputs 1, 2, 3, 4, 5 and 6 are routed to the Output 1 & 2 when the
GROUP MODE is set to Combined.
The audio inputs 1, 2 and 3 (referred to as GROUP 1) are routed to Output
1 and the audio inputs 4, 5 and 6 (referred to as GROUP 2) are routed to
Output 2 when the GROUP MODE is set to Split.
Split Mode

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2.5.4.5 Priority Settings
The audio inputs are summed and routed to the output when PRIORITY is set to Off.
The lower numbered audio inputs will mute higher numbered audio inputs when the lower numbered audio input level
is above the associated threshold level and PRIORITY is set to On. The unmuted audio input is routed to the audio
output.
2.5.4.6 Priority and Group Operation
The lower numbered audio inputs 1 to 5 will mute higher numbered
audio inputs 2 to 6 when the lower numbered audio input level is
above the associated threshold level, PRIORITY is set to On and the
GROUP MODE is set to Combined.
The lower numbered audio inputs 1 and 2 will mute higher numbered
audio inputs 2 and 3 when the lower numbered audio input level is
above the associated threshold level, PRIORITY is set to On and the
GROUP MODE is set to Split.
Also, the lower numbered audio inputs 4 and 5 will mute higher
numbered audio inputs 5 and 6 when the lower numbered audio
input level is above the associated threshold level, PRIORITY is set
to On and the GROUP MODE is set to Split.
This diagram shows Split GROUP MODE, with GROUP 1 in
PRIORITY Off mode and GROUP 2 in PRIORITY On mode.
2.5.4.7 Mute Depth Operation
The MUTE DEPTH OUTPUT 1 adjusts the reduction in level of audio input 2 and 3 when PRIORITY is On and a
lower numbered audio input level is above the associated threshold level.
The MUTE DEPTH OUTPUT 2 adjusts the reduction in level of audio input 4, 5 and 6 when PRIORITY is On and a
lower numbered audio input level is above the associated threshold level.
The extent to which the higher number audio inputs are muted is controlled by the mute depth level and is applicable
only when PRIORITY is set to On.
Note: No reduction in level is perceived when an audio input is muted and the muting depth is set to 0 dB.