JUPITER AVIONICS JA37-201 Aural Message Generator User Manual

JA37-201
Aural Message Generator – 6 Channel

Installation and Operating Manual
Rev A
Jupiter Avionics Corporation
1959 Kirschner Road
Kelowna BC
Canada V1Y 4N7
Tel: +1 778 478 2232
Toll-Free: 1 855 478 2232
www.jupiteravionics.com

Copyright 2022 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.
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

SECTION 1 – DESCRIPTION

1.1 System Overview
The JA37-201 Aural Message Generator – 6 Channel is a dual-channel alerting system that provides up to six different messages.
The JA37-201 is set up on a per-installation basis using cable CAB-USB-0006, or Configuration Cable JA99-001 and CAB-USB-0002, and downloading the system configuration settings and aural messages into non-volatile devices.
1.2 Features Overview
All internal adjustments are quickly made using the proprietary ProCS (Product Configuration Software).
Two ports are provided beside the main connectors for configuration loading. All audio outputs are balanced.
Each message channel has two separate trigger inputs which may be active low or highly dependent on the configuration.
Each generator is provided with two isolation amplifiers.
The messages may be muted by an external switch/button.
The JA37-201 supports message lengths up to 11 seconds.
The JA37-201 is provided with a power-on Self-Test.
1.3 Inputs and Outputs
Refer to the JA37-201 connector maps for the mating connector designators and pin assignments for the input and output signals.
1.3.1 Inputs

CONFIG DATA TO JA37-201
MESSAGE TRIGGER
MESSAGE MUTE
POWER INPUT
RX 1&2 HI/LO| 2
12
2
2
4| Data signal
Active High/low discrete (Configurable)
Active low discrete
Power supply
Audio signal (Configurable)

1.3.2 Outputs

CONFIG DATA FROM JA37-201
GROUND
PHONES HI/LO
LOW ISOLATION HI/LO
HIGH ISOLATION HI/LO| 2
4
4
4
4| Data signal
Ground reference
Audio signal
Audio signal
An audio signal (Configurable)

Specifications

1.4.1 Power Input

Primary nominal voltage
Secondary nominal voltage
Maximum voltage
Minimum voltage
Emergency voltage
Input current| 28 Vdc
14 Vdc
30.3 Vdc
11.0 Vdc
9.0 Vdc
0.5 A max per generator
---|---

1.4.1.1 Audio Performance
Rated Input Level
RX audio rated input level…………………. 7.75 Vrms ±10 %
Rated Output Level

Phones rated output power into 600 Ohm Phones low isolation rated output power into 600 Ohm Phones high isolation rated output power into 600 Ohm| 7.75 Vrms ±10 %
3.87 Vrms ±10 %
1.94 Vrms ±10 %
---|---

Audio Frequency Response
Phones output audio frequency response……………≤ 3 dB from 300 to 6000 Hz
Distortion Characteristics
Phones audio output distortion at rated power……………….≤ 10 %
Input Impedance Receive Audio input Impedance……………..1000 ±10%
Output Impedance

Phones output Impedance
Phones low isolation output Impedance
Phones high isolation output Impedance| 300 Ω ± 20 %
1.2 kΩ ± 20 %
3.0 kΩ ± 20 %
---|---

Output Load
Phones load……………………600 ± 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

RX input circuitry type
Phones output circuitry type| Transformer coupled
Transformer coupled
---|---

1.4.1.3 Discrete Signals

Message Trigger (active low) signal level active
Message Trigger (active low) signal level inactive
Message Trigger (active high) signal level active
Message Trigger (active high) signal level inactive
Message Mute active low signal| ≤ +3 Vdc
≥ +6 Vdc
≥ +8 Vdc
≤ +6 Vdc
≤ +3 Vdc
---|---

1.4.2 Mechanical Specifications

Height
Depth (excluding connectors)
Width (including flanges)
Width (without flanges)
Weight
Connectors (4):J1, J3
J2, J4
Mounting
Bonding
Installation kit part number| 2.34 in [59.4 mm] max
4.42 in [112.3 mm] max
4.52 in [114.8 mm] max
3.52 in [89.4 mm] max
0.91 lb [0.41 kg] max
Two 25-pin D-Sub male V5 locking
Two 4 pole 3.5mm jacks
4 x 10-32 fasteners
≤ 2.5 mΩ
INST-JA37 (2 required)
---|---

1.4.3 Environmental Specifications
Temperature:

Operating
Ground Survival| -45 °C to +70 °C
-55 °C to +85 °C
---|---

1.4.4 Flammability of Materials
The JA37-201 complies with the requirements of RTCA/DO-160G Sec 26.3.3 “Flammability”, by design. The JA37201 has an enclosure constructed of metal on all sides, and has no vent holes

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 JA37-201 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 online warranty card from the Jupiter Avionics Corporation (JAC) website – www.jupiteravionics.com/warranty
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 labor 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 center, 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 online warranty card is not completed, the product will be warranted from the date of manufacture.
Contact JAC for a 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 a 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.
WARNING: The messages are intended only to supplement, NOT replace, airframe messages such as low rotor RPM’,engine out’ or decision height alerting’. The message audio feature is intended for use as a secondary alerting system where another device provides the primary annunciation. **2.4.1 Installation Limitations** The JA37 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 AC43.131B 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. 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 aclamshell’ 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 JA37-201 can be mounted in any attitude and location with adequate space 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 and P3 pin 1 for +28 Vdc or +14 Vdc relative to ground.
b) Check P1 and P3 pin 14 for continuity to ground (less than 0.5 ).
c) Check P1 and P3 pin 18 for continuity to ground (less than 0.5 ) when the relevant switch is closed.
d) Check all pins for shorts to ground or adjacent pins.
2.4.4.2 Configuration
Ensure that the JA37 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 the normal operation of all functions of the JA37. a) Check that all configuration 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 System Operation
Many of the System Operation parameters are configured using ProCSTM (see section 2.6).
2.5.1 Configuration Operation
The JA37-201 accepts configuration commands on the Configuration connector via the configuration cable(s) and the configuration tool (ProCSTM) ­ refer to section 2.6.
2.5.2 Message Mute Operation
The JA37-201 stops playing all messages if the MESSAGE MUTE input is activated while any MESSAGE TRIGGER input is active (or when Power-On Self- Test is occurring) and stays muted until the next message trigger event.
2.5.3 Message Operation
The JA37-201 Message 1, Message 2, and Message 3 audio signal playback modes are individually selectable between Continual and One-Shot. Message playback may also be configured for Priority operation, see section 2.5.5 ­ Priority Operation.
When a message is configured as One Shot, the complete Message audio signal is routed to the phone’s output once the corresponding Message Trigger is active. When a message is configured as Continual, the Message audio signal is routed to the phone’s output for the duration of the trigger input being active.=
2.5.4 Power-On Self-Test Operation
When the JA37-201 power is off and then POWER INPUT is applied, the three messages will play in the following order: message 1; message 2; message 3. The Power-On Self-Test messages may be muted at any time using the MESSAGE MUTE input. See section 2.5.2.
2.5.5 Priority Operation
When Message Trigger Priority is selected (see Message Trigger Priority in section 2.6.3.1), if more than one trigger is active, the messages will have the following priority: message 1; message 2; message 3. Note that if a higher priority message has been triggered and is set as continual, the lower priority messages will not play until the higher priority trigger is no longer active.
2.5.6 Non-Priority Operation
When Message Trigger Priority is not selected (‘Equal Priority’ in ProCSTM) if more than one trigger is active, the messages will play simultaneously (both Continual and One-Shot messages).
2.5.7 RX Audio Operation
The RX 1 and 2 Audio is level controlled and summed with the Message audio and routed to Phones 1 and 2, Low Isolation 1 and 2 outputs.
2.6 Adjustments and Configuration using ProCSTM
All the JA37-201 internal adjustments are set from the Product Configuration Software ProCSTM. Configuration data is sent to the JA37-201 via the configuration connector using the Configuration Cables and a computer running the ProCSTM software. For configuration requirements, see section 2.5.1.
For full information on the configuration process, and for installation of ProCSTM on your computer, refer to the ProCSTM manual on the Jupiter Avionics website – www.jupiteravionics.com/productsoftware.
2.6.1 Configuration Cabling Requirements
To configure the JA37-201, it is necessary to load the Product Configuration Software ProCSTM onto a Windows-based computer as described in the ProCSTM manual.
The cables required to configure the JA37-201 are not included with the unit.

Cabling option 1:

1
1| USB A to RS232 9-Pin Cable
Configuration Cable| CAB-USB-0002
JA99-001

Cabling option 2:

Note: The JA37-201 consists of two JA37-001 units installed in a single box, each with a configuration jack. Each section of the unit is configured separately using the JA37-001 ProCS menu.
The upper section of the JA37-201 (connector J1) is configured via configuration jack J2.

The lower section of the JA37-201 (connector J3) is configured via configuration jack J4.
The ProCSTM JA37-001 menu item ‘ProCS Setup’ provides Setup drawings showing the cabling arrangement for connecting each section of the JA37-201 to a computer running the ProCSTM.
2.6.3 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 properly configure the JA37-201, power must be applied to each unit.
Within ProCSTM, the JA37-001 configurable settings are grouped together into the following sections:
2.6.3.1 JA37-201 Configurable Pins Function Select
Several of the connector pins can be configured to meet the requirements of specific installations. Refer to the JA37-201 Interconnect. Other configuration options may be unavailable, depending upon the selections made.

The message trigger activation can be selected as Active Hi, or Active Lo.
**If the ‘Message Trigger Priority’ box is checked, the signal Priority will be shown.
The message Playback may be selected as ‘Continual’ or ‘One-Shot’ for each message (1 through 3).
2.6.3.2 JA37-201 Messages
**

Audio Files
The JA37-201 is loaded with standard audio signals for each of the three messages in each unit, but the audio files window allows these signals to be replaced with other recordings during the configuration process.
Selecting ‘Open…’ will open to the Jac>ProCS folders on the attached computer, but will also allow browsing of any directory accessible from the computer, and any suitable uploaded WAV file.
If a new audio file is selected, it may be played using the arrow to the right of the Message line. See ‘Saving new Audio files’ below.

Phones 1 and Phones 2 Message
Levels For each of the Phones Outputs, the levels for the Messages can be adjusted from -42.5 to 0 dB. (default -20 dB)
Saving new Audio Files.

Note: This pane will not have the full content shown here if no JA37-201 is connected.
When suitable alert messages are listed in the ‘Audio Files’ section, they are uploaded to the JA37 by selecting ‘Program’ from the main ProCS menu, and clicking on ‘Write JA37-001 Messages…’.
The window ‘Select Messages to Write’ (see below) will open, allowing the selected audio file message to be uploaded to the JA37-201. ProCS will automatically convert any WAV file to the required audio sample rate for the JA37-201.
A selection of suitable WAV files can be found on the JAC website:
Products>Software>Wave File Messages www.jupiteravionics.com/productsoftware The ‘Select Messages to Write’ window is shown. Similar windows will open for the ‘Read’ and ‘Erase’ selections. The desired message is chosen using the check box to the right of the message number, or by clicking on the ‘Select All’ button.
2.6.3.3 JA37-201 RX Audio Levels
When RX Input is selected from the Configurable Pins Function Select section (section 2.6.3.1) the Phones 1 and Phones 2 RX AUDIO levels may be selected from 1 to 8 Vrms (default 7.8 Vrms). 2.6.4 Other Configuration Features
In the JA37-201 Product Information Window, the model number, serial number and check sum of the JA37-201 audio panel can be viewed.
2.7 Installation Kit
Two INST-JA37 kits are required to install this unit and are not included with the unit.
Each installation kit (Part # INST-JA37) consists of the following:

1
1
1| TAG ring 3/8″ ID
D-Sub 25-pin connector, hood, and 25 crimp pins
3/4″ Inside Diameter, Heat Shrink Tube| CON-5500-0375
CON-3420-0025
WIR-HTSK-0750

2.7.1 Recommended Crimp Tools
Standard D-Sub Crimp Tool Chart 

2.8 Installation Drawings
The drawings and documents required for Installation can be found in Appendix A of this manual.
2.8.1 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 JA37-201. However, if a unit has been configured using JAC’s ProCSTM software, the software can be used to generate fully customized interconnects and connector maps for use by the installer.

SECTION 3 ­ OPERATION

3.1 Introduction
This section contains the operating instructions for the JA37-201.
Note: The JA37-201 has no integrated operator controls. However, a remote- mounted mute switch or button may be installed, which affects the operation of the unit.
3.2 Mute Switch/Button
If the JA37-201 is playing Alert messages (either because an alert input is active or when Power-On Self-Test is occurring), momentary activation of the remote Message Mute switch or button stops all messages from playing until the next message is triggered.

Installation and Operating Manual

Appendix A – Installation Drawings

A1 Introduction
The drawings necessary for installation and troubleshooting of the JA37-201 Aural Message Generator – 6 Channel are in this Appendix, as listed below.
Note: A fully customized set of Connector Maps and Interconnects can be created using the ProCS software. Refer to the ProCSTM manual for further information.
A2 Installation Drawings

P1 & P3
25 PIN FEMALE DMIN
MATING CONNECTOR VIEW IS FROM THE REAR OF THE MATING CONNECTOR
CONFIGURATION CONNECTOR

JA37-201 INTERCONNECT WIRING NOTES
NOTES

1. ALL WIRE SIZES SHOULD BE 24 AWG MIN UNLESS OTHERWISE SPECIFIED. UNSHIELDED WIRE SHOULD BE SELECTED PER FAA AC43.13-1B CHANGE 1 PARA 11-76 TO 11-78. WIRE TYPES SHOULD BE IN ACCORDANCE WITH MIL-W-22759 AS DESCRIBED IN FAA AC43.13-1B CHANGE 1 PARA 11-85 AND 11-86 AND LISTED IN TABLE 11-11 OR 11-12. ALL SHIELDED CABLES SHOULD BE IN ACCORDANCE WITH MIL-DTL-27500 (REVISION H OR LATER).
2. USE FOR SECOND SOURCE INPUT.
3. USE AS GROUND REFERENCE FOR SWITCH CLOSURE WHEN TRIGGERS CONFIGURED AS ACTIVE LOW.
4. PROVIDES 50% REDUCTION IN AUDIO POWER AND LESS LOADING.
5. PROVIDES 67% REDUCTION IN AUDIO POWER AND THE LEAST LOADING.
6. EXAMPLES OF MESSAGE TRIGGERS.
7. CONNECTION TO AIRFRAME GROUND SHOULD BE MADE WITH 20 AWG WIRES. LENGTH NOT TO EXCEED 3 FT (0.91 M).
8.  CONNECTOR PIN HAS MORE THAN ONE FUNCTION. SEE THE OPTIONS SECTION OF THIS DRAWING FOR ALTERNATIVE INTERCONNECT WIRING.
9. CABLE SHIELDS AT THE JA37 CONNECTOR END SHOULD BE TERMINATED TO AIRFRAME GROUND USING THE TAG RING SUPPLIED IN THE INSTALLATION KIT OR EQUIVALENT.
10. USE FOR MUTING OR ACKNOWLEDGING MESSAGES.

PREPARED| TAT|
---|---|---
CHECKED| JAC
05-26-20
SDB| TITLE Aural Message Generator
APPROVED| JAC
05-26-20
KDV| USAGE CODE
L00N3| PART NO.
JA37-201| SHEET
1/4
CONFIDENTIAL & PROPRIETARY
TO JUPITER AVIONICS CORP.| DOC NO.
JA37-201 Interconnect Rev A.dwg

CONFIGURATION CONNECTOR ****

B1 Airworthiness Approval
Airworthiness approval of the JA37-201 may require completion of a TCCA Major Modification Report per CAR STD (AWM) 571 Appendix L, or a FAA Form 337. The sample wording for a description of the work is provided to assist the Installing Agency in preparing Instructions for Continued Airworthiness (ICA) when replacing existing equipment with a Jupiter Avionics JA37-201 Aural Message Generator – 3 Channel. This sample may be modified appropriately for new installations. It is the installer’s responsibility to determine the applicability of the method used. Installations performed outside Canada must follow the applicable aviation authority’s regulations.
Sample Wording:
Removed the existing [model] equipment and replaced it with a Jupiter Avionics JA37-201 Aural Message Generator – 3 Channel in [aircraft location].
Installed in accordance with the JA37-201 Installation Manual, Revision [ ], and AC 43.13-2, Chapters 2, and 3.
The JA37-201 interfaces with existing aircraft systems per the Installation Manual instructions.
The JA37-201 Installation Manual provides detailed installation instructions and wiring diagrams (Section 2, and Appendices A and B).
Power is supplied to the JA37-201 through an existing [ ]-Amp circuit breaker that was previously used by the original audio panel. The net electrical load is unchanged.
Aircraft equipment list, weights, and balance amended. Compass compensation was checked and found to conform to applicable regulations.
B2 Instructions for Continued Airworthiness
Maintenance of the JA37-201 Aural Message Generator – 3 Channel is “on condition” only. Refer to the JA37-201 Maintenance Manual. Periodic maintenance of the JA37-201 is not required.
The following sample Instructions for Continued Airworthiness (ICA) provides assistance in preparing ICA for the Jupiter Avionics JA37-201 unit installation as part of a Type Certificate (TC) or Supplemental Type Certificate (STC) project to comply with CAR STD (AWM) 523/527/525/529.1529 or FAR 23/25/27/29.1529 “Instructions for Continued Airworthiness”.
Items that may vary by aircraft make and model are shown in brackets (“[ ]”) and should be filled in as appropriate. Some of the checklist items do not apply, in which case they should be marked “N/A” (Not Applicable).
Instructions for Continued Airworthiness, Jupiter Avionics JA37-201 Aural Message Generator – 3 Channel in an [Aircraft Make and Model]

1. Introduction
   [Aircraft that has been altered: Registration number, Make, Model and Serial Number] Content, Scope, Purpose, and Arrangement: This document identifies the Instructions for Continued Airworthiness for a Jupiter Avionics JA37-201 installed in an [aircraft make and model].
   Applicability: Applies to a Jupiter Avionics JA37-201 installed in an [aircraft make and model].
   Definitions/Abbreviations: None, N/A.
   Precautions: None, N/A.
   Units of Measurement: None, N/A.
   Referenced Publications:
   JA37-201 Installation and Operating Manual
   JA37-201 Maintenance Manual J
   A37-201 Operating Manual STC/TC # [applicable
   STC/TC number for the specific aircraft installation] Distribution: This document should be a permanent aircraft record.

2. Description of the System/Alteration
   Jupiter Avionics JA37-201 Aural Message Generator – 3 Channel with an interface to external transceivers and [include other equipment/systems as appropriate]. Refer to Appendix A of this manual for interconnecting information. Refer to aircraft manufacturer-approved interconnect for the actual installation.

3. Control, Operation Information
   Refer to section 3 of this manual.

4. Servicing Information
   N/A

5. Maintenance Instructions
   Maintenance of the JA37-201 is `on condition’ only. Periodic maintenance is not required. Refer to the JA37-201 Maintenance Manual.

6. Troubleshooting Information
   Refer to the JA37-201 Maintenance Manual.

7. Removal and Replacement Information
   Refer to Section 2 of this manual – the JA37-201 Installation and Operating Manual. If the unit is removed and reinstalled, a functional check of the equipment should be conducted.

8. Diagrams
   Refer to Appendix A of this manual – the JA37-201 Installation and Operating Manual – for installation drawings and interconnect examples.

9. Special Inspection Requirements
   N/A

10. Application of Protective Treatments
    N/A

11. Data: Relative to Structural Fasteners
    JA37-201 and appropriate mounting hardware installation, removal and replacement should be in accordance with applicable provisions of AC 43.13-1B and AC 43.13-2A.

12. Special Tools
    N/A

13. This Section is for Commuter Category Aircraft Only
    A. Electrical loads: Refer to Section 1 of the JA37-201 Installation and Operating Manual. B. Methods of balancing flight controls: N/A. C. Identification of primary and secondary structures: N/A. D. Special repair methods applicable to the airplane: N/A.

14. Overhaul Period
    No additional overhaul time limitations.

15. Airworthiness Limitation Section
    N/A

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