Cobham 4420 Audio Management Unit Installation and operation manual
Below you will find brief information for Audio Management Unit 4420. This unit is designed to be controlled by a pair of 5520-[ ] Audio Control Panels (ACP). The Model 4420-[ ] Audio Management Unit is a remotely controlled electronic unit that operates upon digital signal commands sent to it by the ACP’s at the pilot and copilot control stations. The Model 4420-[ ] is capable of switching and controlling the volume of up to 15 receiver inputs. It also switches and controls audio for interphone. In addition, up to four unswitched and unmuted inputs are provided to accommodate auxiliary inputs. The unit also incorporates features like VOX and noise reduction, and it has dual redundant Audio Control Boards (ACBs).
Advertisement
Advertisement
REVISION HISTORY
REV DCA DATE DRAWN
Refer to the DCA and associated markups for a complete description of the changes incorporated in a revision.
CHECKED APPROVED PUBLISHED
SEE REVISION 1.04 FOR COMPLETE DOCUMENT REVISION HISTORY
Digitally signed by Bill
AA W16594 01/31/2017
Digitally signed by: James Sneed
DN: CN = James Sneed C = US O
= Cobham OU = Cobham
Aerospace Communications
Date: 2017.02.08 09:35:06 -06'00'
DeHaven
Date: 2017.02.13 08:48:32
-07'00'
Digitally signed by Jim Bachelor
DN: cn=Jim Bachelor, o, ou, [email protected]
, c=US
Date: 2017.02.16 09:53:34 -07'00'
Published
These commodities, technology or software
Are Controlled in accordance with the United
States Export Administration Regulations.
When exporting from the United States;
Diversion contrary to U.S. Law is prohibited.
2017.02.16
11:43:12 -07'00'
IMPORTANT NOTICE
Chelton Avionics Inc. doing business as Cobham Aerospace
Communications is responsible for full distribution and revisions of ICA's (Instructions for Continued Airworthiness).
For inquiries regarding the content and currency of this manual contact Chelton Avionics, Inc., 6400 Wilkinson Drive,
Prescott, Arizona, 86301. Telephone (928) 756-1615 or refer to the following website: www.wulfsberg.com
for more information.
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION.
NEITHER RECEIPT NOR POSSESSION OF THIS DOCUMENT CONFERS ANY RIGHT TO REPRODUCE, USE OR DISCLOSE, IN WHOLE OR IN PART, ANY
INFORMATION CONTAINED IN THIS DOCUMENT WITHOUT WRITTEN AUTHORIZATION FROM WULFSBERG ELECTRONICS.
TEMPLATE 150-744502-01 REV. A
A
PRINTED COPY OF THIS DOCUMENT MAY NOT BE THE
LATEST REVISION.
IT IS THE USER’S RESPONSIBILITY TO ENSURE THAT HE OR
SHE IS USING THE LATEST DOCUMENT REVISION.
THE LATEST REVISION MAY BE VIEWED OR PRINTED FROM THE
ELECTRONIC DOCUMENT DISTRIBUTION SYSTEM.
Chelton Avionics, Inc.
dba Wulfsberg Electronics Division
Prescott, AZ
CAGE
CODE
1WZE2
DOCUMENT TITLE
INSTALLATION AND OPERATION
MANUAL, AUDIO MANAGEMENT UNIT
(AMU), MODEL 4420
SIZE
A
LRU
4420
DOCUMENT NUMBER
4420-804-0
REV
AA
Typed signatures indicate approval. Handwritten signature approval of this document is on file at Wulfsberg Electronics, Prescott, Arizona.
SCALE: NONE DO NOT SCALE DRAWING
INSTALLATION AND OPERATION MANUAL
INSTALLATION AND OPERATION MANUAL
MODEL 4420-[ ]
1.0 OPERATING INSTRUCTIONS AND EQUIPMENT LIMITATIONS
This document makes references to NAT Seattle, Inc. Please note that NAT Seattle, Inc. has been changed to Cobham. For all references to NAT Seattle, Inc. herein, substitute Cobham.
The conditions and tests for TSO approval of this article are minimum performance standards.
Those installing this article, on or in a specific type or class of aircraft, must determine that the aircraft installation conditions are within the TSO standards. The article may be installed only following 14 CFR part 43 or the applicable airworthiness requirements.
The Model 4420-[ ] Audio Management Unit (AMU) is designed to be controlled by a pair of
5520-[ ] Audio Control Panels (ACP). The Model 4420-[ ] Audio Management Unit is a remotely controlled electronic unit that operates upon digital signal commands sent to it by the ACP
’s at the pilot and copilot control stations. Each ACP continuously reads the status of all audio control switches and settings of potentiometers on its front panel as well as inputs to it connector, and compiles this information into the form of a digital signal. The digital signal is sent to the Model
4420-[ ] from the
ACP’s in a CANBUS serial proprietary format via a twisted, shielded wire pair.
The Model 4420-[ ] receives and demultiplexes this digital signal and converts it into useful audio control information. The 5520-
[ ] ACP’s amplifies audio from its microphone input and sends it to the Model 4420-[ ].
The Model 4420-[ ] is capable of switching and controlling the volume of up to 15 receiver inputs.
It also switches and controls audio for interphone. In addition, up to four unswitched and unmuted inputs are provided to accommodate auxiliary inputs. The headphone outputs from the 4420-[ ] are sent to the 5520-[ ] where the headphones are connected to the outputs of the ACP
’s. Pilot and copilot cockpit voice recorder (CVR) outputs produce a summation of the headphone and hot microphone audio from each pilot
’s ACP. The hot microphone to CVR audio channel is unswitched and unmuted, thus allowing hot microphone audio to be recorded on the cockpit voice recorder at all times.
Receiver, sidetone, headphone and interphone, and all operating modes are electronically switched and controlled by the digital signal information sent from the ACP
’s. An electronic volume control attenuator is employed in each of the 15 receiver audio input channels. Every receiver input attenuator has 40 dB of range and is digitally controlled. Separate electronic volume control attenuators are provided for headphone audio, sidetone audio, and interphone audio, all with 40 dB range. These volume control attenuators are also digitally controlled. Refer to the applicable ACP installation and operation manual for specific information on control hardware required. Aural warning, auxiliary and CVR audio channels do not employ any individual electronic volume control attenuators; however, the volume of some CVR audio is directly affected by the headphone volume control, interphone volume control and sidetone volume control.
The 4420-[ ] has an aural warning generator that stores prerecorded tones and voice warnings.
Up to 50 tones and voice warnings can be stored for playback. Tones and voice warnings may vary by detail part number.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 1
INSTALLATION AND OPERATION MANUAL
A voice activated switch (VOX) is incorporated in series with the hot microphone input to interphone channel along with a noise reduction circuit. This feature allows interphone operation without coupling of ambient cockpit noise into the amplifier during times when the pilot is not talking and reduces unwanted noise while the pilot is talking.
The VOX is not incorporated in series with the hot microphone input to CVR output channel. The
VOX control knob located on the 5520-[ ] adjusts the pilot MIC VOX threshold (squelch) level along with the level of noise reduction filtering applied to the operator microphone signal by the
Dynamic Vox noise reduction circuit located in the Model 4420-[ ] AMU. Rotating the control fully CCW puts pilot and aux mics in the VOX-HOT (minimum threshold) mode. Rotating the control fully CW operates the pilot and aux
MIC’s in the VOX-PTT (maximum threshold) mode.
VOX threshold should be set to achieve optimal voice activation and noise reduction based on the ambient noise of the environment.
Pushing the VOX control knob IN turns the pilot INPH microphone OFF. When the VOX switch is turned OFF, INPH transmissions will be made from the pilot MIC if the ICS PTT input on the
Model 5520-[ ] is grounded.
Up to four SVC microphone inputs and four SVC headphone outputs are provided for ground crew interphone interface.
Selective voice or ident code filtering is provided on up to four of the receiver audio inputs, intended for NAV and ADF audio. The filter function is also digitally controlled.
All outputs of the Model 4420-[ ] are both open and short circuit protected. All internal adjustments of the Model 4420-[ ] are set to factory standards.
The amplifiers are adjusted for acceptable listening output levels into the proper loads with receiver inputs of 7.75 volts RMS (100 mW). This input level is realized when receivers are set for
100 milliwatts into 600 ohms. If 7.75 volts RMS is greatly exceeded at the inputs, the audio will become distorted due to peak clipping and audio bleed through will be noticed. However, the amplifiers will not be damaged.
Important features of the Model 4420-[ ] are its emergency mode of operation and also its dual redundant Audio Control Board (ACB) backup mode. In the emergency mode, when there is an interruption of supply power to the AMU or ACP unit or a pilot operator switches the ACP
EMR/NRM switch to the EMR position, the Model 4420-[ ] will automatically pass COM2 and
AUX audio (resistively isolated from each other) through to the ACP headphone and CVR outputs.
It will also pass pilot and/or copilot (depending on which ACP is in EMR operation) microphone audio to COM2 microphone output. If power is applied to any one of the AMU Backup +28VDC,
+28VDC-A or +28VDC-B then microphone bias and an amplified interphone circuit resistively coupled to the headphone outputs is provided in emergency mode. Also if power is applied to one of the +28VDC inputs in emergency mode
, logic is provided to electromechanical relays
in the AMU to isolate pilot and copilot microphone inputs in emergency mode unless both transmit simultaneously.
When there is a loss of digital communications between either ACP and the Model 4420-[ ], when there is a continuous built in test failure of one of the AMU’s ACB’s or failure one of the aural warning discrete inputs, the Model 4420-[ ] automatically switches over to backup mode using its
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 2
INSTALLATION AND OPERATION MANUAL
still functional dual redundant ACB, without loss of function to the operator. While in backup mode, headphone volume level is maintained at the same setting realized immediately prior to loss of digital communications. Also, aural warning, auxiliary audio and pilot microphone is also maintained via the dual redundant ACB to the headphone, CVR, COM microphones and the optional speaker outputs as normal. A loss of digital communications can occur if either the AMU or ACP CANBUS controller malfunctions, loses power, or if the twisted, shielded wire pair carrying digital information is somehow disconnected or severed.
Normal operating modes of the Model 4420-[ ] are listed below and are established when the appropriate ACP digital signal is sent to the Model 4420-[ ].
2.0 SPECIFICATIONS
The Model 4420-[ ] is intended for aircraft with two 5520-[ ] Audio Control Panels. The Control
Functions are listed in Table 1. Input and output specifications are listed in Table 2 and Table
3, respectively. Overall Model 4420-[ ] specifications are listed in Table 4. Figure 1 4420-000
Interconnect Diagram (Generic Installation) provides a generic installation wiring diagram for the
Model 4420 and Model 5520-[ ].
Table 1 Model 4420-[ ] Control Functions
CONTROLS
RCVR/XCVR
VOLUME
CONTROLS
HDPH VOLUME
CONTROL
Digital information received from the 5520-[ ] is used to control the volume of up to 15 receiver/transceiver audio inputs. Volume range is 40 dB.
Digital information received from the 5520-[ ] is used to control the combined radio volume level for audio from the receiver and transceiver simultaneously. Volume range is 40 dB.
INPH VOLUME
CONTROL
ST VOLUME
CONTROL
VOX Threshold
EMR/NRM Switch
Digital information received from the 5520-[ ] is used to control the
INPH system volume level. Volume range is 40 dB.
Digital information received from the 5520-[ ] is used to control the
Sidetone volume level. Volume range is 40 dB.
Digital information received from the 5520-[ ] is used to adjust the threshold (squelch) of the Model 4420-[ ] pilot mic voice activated switch (VOX) and Dynamic Vox noise reduction circuits. Fully CCW is HOT (minimum threshold), fully CW is PTT (maximum threshold).
In the event of system failure without loss of power, turning the
EMR/NRM switch on the 5520-[ ] to the EMR position will cause electromechanical relays to resistively couple audio from COM2 and
AUX1 inputs to the operator’s headphones and CVR outputs, and will also cause MIC audio from the operator’s microphone to be connected to the COM2 radio. The COM2 PTT control input will be directly connected to the COM2 radio PTT input. If one of the
+28VDC power inputs is available to the 4420-[ ] AMU then switching logic is provided to electromechanical relays to isolate the pilot’s microphone input from the copilot’s microphone input in emergency operation unless they both transmit simultaneously.
Aural Warning function is also retained if power is available while in
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 3
DUAL REDUNDANT
AUDIO CONTROL
BOARD BACKUP
MODE
I-BIT
INSTALLATION AND OPERATION MANUAL
EMR as long as system failure does not prevent the AWG from functioning normally. Loss of 28 VDC power to the AMU or ACP will also activate the hardware bypass (emergency) function.
The 4420-[ ] has dual redundant Audio Control Boards (ACBs), if one ACB fails functionality is automatically switched to the other ACB and both users share the amplifiers contained on the functional ACB without a noticeable effect on performance.
Initiated Built in Test circuits upon activation by the I-BIT AMU input discrete will trigger audio tests of every input and output channel and report the result to nonvolatile memory as well as playing a “Test
Pass” or “Test Fail” message on the Pilot and Copilot Headphone outputs.
C-BIT
CANBUS
USB
ARINC 429
RS232
Continuous Built in Test circuits perform continuous health mo nitoring of the AMU and ACP’s internal functions and logs the information to non-volatile memory. In the special case where the
C-BIT detects an failure of one of the AMU’s ACB’s or aural warning input discrete failure, the AMU will automatically switch both pilot and copilot control to its functional dual redundant audio control board.
Digital control and health information is transmitted between the
4420-[ ] and the Pilot and Copilot 5520-[ ]
’s via a dual redundant
CANBUS serial format using twisted, shielded wire pairs. A
CANBUS that runs between the AMU’s internal ACB’s enables the primary and redundant ACB’s from monitoring each other’s health.
The Universal Serial Bus is an optional feature for maintenance. To be installed as part of future enhancement.
The ARINC 429 interface is optional for controlling AWG alerting signals, in conjunction or in place of the dedicated warning discretes and/or reporting of BUILT IN TEST maintenance data.
The RS232 serial buses are provided for maintenance. Each internal ACB has its own RS232 serial port accessible through the access panel on the end of the AMU enclosure and through the rear connector.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 4
INSTALLATION AND OPERATION MANUAL
Table 2 Input Specifications
INPUTS
RCVR/XCVR
(receiver/transceiver
Inputs) (15)
AUX Inputs (4)
SVC MIC Input (4)
SVC MIC PTT (4)
28VDC-A Power
Supply
28VDC-B Power
Supply
28V Backup
Power Return
(Ground)
Chassis Ground
Discrete Inputs
Fifteen differential receiver/transceiver audio inputs (up to 8 receivers can be used as transceivers). Receiver input level is 7.75 VRMS.
Up to four inputs which are unswitched and unmuted.
0.25 V
RMS
into 150
nominal. Dynamic range from 20 mV
RMS
to 1.5
V
RMS
. DC Bias 12 VDC @ 12-18mA. Optionally the inputs can be configured as 200
V
RMS
into 5
nominal. Dynamic range from 20
V
RMS
to 1mV
RMS
.
Discrete input pins are grounded when the ground crew personnel want to transmit on the Interphone.
Two 28VDC power supplies each used to operate one of two redundant audio control boards.
28VDC-A Power Supply has a range of 12 VDC to 32 VDC.
Quiescent current is 600mA max and the maximum operating current is 1.75 Amps. (2A circuit breaker).
28VDC-B Power Supply has a range of 12 VDC to 32 VDC.
Quiescent current is 600mA max and the maximum operating current is 1.75 Amps. (2A circuit breaker).
With both 28VDC-A and 28VDC-B Power Supplies the quiescent current is 1.2 Amp max and the maximum operating current is 3.5 amp max.
Provides the hardware bypass (emergency) function if both 28 VDC-A and 28VDC-B power supplies fail. Quiescent current is 100mA, maximum current is 120mA.
Connect to aircraft ground using a wire less than or equal to 1 meter long.
Connect to aircraft ground using a wire less than 0.3 meters long.
Up to 24 ground/open discrete inputs for individually triggered aural warnings or other custom features.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 5
INSTALLATION AND OPERATION MANUAL
Table 3 Output Specifications
OUTPUTS
XMIT MIC (8)
XMT MIC PTT
SVC HDPH (4)
Up to eight MIC outputs for interfacing with transceivers. 0.25 VRMS into 150 ohms.
Up to eight PTT outputs for interfacing with transceivers. Opens the microphone to the associated radio and mutes the microphone to interphone and interphone to headphone (sidetone) audio.
3 VRMS or optionally configurable to 6 VRMS @ < 2% distortion. To communicate with ground crew personnel on the Interphone.
CVR (Pilot & Copilot) Two CVR outputs (one for each 5520-[ ]) 2.00 V
RMS
into 5K ohms.
HDPH
Headphone output to the 5520-[ ]. 3 VRMS or optionally configurable to 6 VRMS @ < 2% distortion.
BIT DISCRETE OUT
BIT DISC OUT will output a ground condition during a system failure such as loss of power, when either ACP’s NORM/EMR switch is manually switched to EMR position, or when the system switches to backup mode due to a detected problem.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 6
INSTALLATION AND OPERATION MANUAL
Table 4 Model 4420-[ ] Overall Specifications
SPECIFICATIONS
Noise
Total Harmonic
Distortion (THD+N)
Frequency
Response
Power Supply
Operating
Temperature
<-70 dB (-80 dB typical)
<3% (<1% typical)
Flat to within 3 dB from 300Hz to 6000Hz
DO-160E CAT [BZ]
-55
to +70
C
Vibration
RTCA DO-160E categories [(RBB1)(U2FF1)(SCM)]
Operating Altitude
-15,000 to +55,000 feet.
-66dB @ 300Hz worst case
Crosstalk (Input to
Input)
Crosstalk (Input to
Input)
Headphone outputs:
Microphone outputs:
-82dB worst case @ 6,000Hz,
-87dB worst case @6,000Hz
Weight
Mounting and
Dimensions (in inches)
Environmental Test
Specifications
4.0 lbs. (1.81 kg) max.
Mounted by rack (see Section 3.1).
11.242 (L) x 2.26 (W) x 7.64 (H) (length includes connectors and access panel fasteners)
Tested under environmental conditions and test procedures per
RTCA DO-214 and DO-160E ENV. CAT.
[(A2)(F2)X]BBB[(RBB1)(U2FF1)(SCM)]XWXDFSZ[BZ]AZ[AC][RR]M[
A3(G3)(J3)3]XXAX.
Additional environmental test information is in Table .
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 7
INSTALLATION AND OPERATION MANUAL
INSTALLATION PROCEDURES, WIRING DIAGRAMS, AND LIMITATIONS
2.1 PHYSICAL DESCRIPTION
Installation dimensions are shown on the Model 4420-[ ] Installation drawing in Figure 6. No shock or vibration isolators are required for mounting.
The Model 4420-[ ] Audio Management Unit (AMU) shall be mounted to a metal surface and it is absolutely necessary to ground the mounting rack to the metal aircraft ground structure. The
AMU enclosure and mounting surface are finished with an electrically conductive film. It is not necessary or recommended to remove the film for electrical bonding to any metal aircraft ground structure because the coating prevents corrosion. The unit is rack-mounted and secured with the thumbscrew on the connector end of the enclosure assembly. The DFAR compliant rack part number is NAT Seattle part number 50-08-4410. The non DFAR compliant rack part number is
NAT Seattle part number 50-08-4400.
2.2 ELECTRICAL DESCRIPTION
Connections to the Model 4420-[ ] are made through a 128 pin D38999 Series III cylindrical threaded style connector (P1) and a 79 pin D38999 Series III cylindrical threaded style connector
(P2). The Model 4420-[ ] connector part numbers are shown in Table 5, as are the mating
connectors to be installed on the aircraft wire harness. A cable support is recommended for strain relief of wires exiting the mating connector.
Numerical pin identification and wiring diagrams are shown in this section. Shielded wire must be used where indicated on the diagrams. AWG 22-24 size wire should be used for all connections except those to the input supply power, power ground and chassis ground, where AWG 22 size should be used for all power, ground, and chassis ground connections.
Unit Connector
P1 (128 PIN)
Unit Connector
Part No.
AMPHENOL P/N 91-569769-35P
Mating Connector
Part No.
AMPHENOL TVS06RF-25-35S
GLENAIR M85049/38S25N
P2 (79 PIN) AMPHENOL P/N 91-569767-35P
TVS06RF-21-35S
GLENAIR M85049/38S21N
File: 4420-000 405-0110.DOC
Use 22 AWG (min) for power and ground connections. Use 24 AWG (min) twisted, shielded wire for all other audio connections. All audio cable shields shall be grounded at one end only to prevent ground loop interference. Use 24 AWG (min) single conductor non-shielded wire for all discrete signal connections. Twisted, shielded pair cable designated for high speed signals shall be 100 ohm twinax (Thermax MX100-24 or approved equivalent).
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 8
INSTALLATION AND OPERATION MANUAL
2.3 INSTALLATION LIMITATIONS
The Model 4420-[ ] has no known installation limitations if installed in accordance with the environmental conditions defined by the DO-160E Environmental Qualification Form of Table 9 in this document. In particular it should be noted that the system meets DO-160E Section 19
Category AC for magnetic fields induced into the interconnecting cables when using ordinary twisted, shielded cables on the SVC1 through SVC4 microphone cables with the shield grounded at one end. If overbraid shielding is installed over the microphone cables, the Model 4420-[ ] can be installed into an installation environment representative of DO-160E Section 19 Category ZC.
In order to meet RTCA DO-160E Section 21 Emission of RF Energy Requirements, the power return leads must be 1 meter in length or less.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 9
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 10
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 11
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 12
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 13
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 14
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 15
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 1)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 16
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 2)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 17
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 3)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 18
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 4)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 19
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 5)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 20
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 6)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 21
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 4 Wiring Diagram, Model 4420-000 AMU
(Sheet 7)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 22
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH1
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 1)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 23
INSTALLATION AND OPERATION MANUAL
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH2
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 2)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 24
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH3
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 3)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 25
INSTALLATION AND OPERATION MANUAL
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH4
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 4)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 26
INSTALLATION AND OPERATION MANUAL
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH5
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 5)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 27
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH6
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 6)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 28
INSTALLATION AND OPERATION MANUAL
FILE: 4420-003_403-0100.DWG DWG: 4420-003_403-0 REV 1.00 SH7
Figure 5. Wiring Diagram, Model 4420-003 AMU
(Sheet 7)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 29
INSTALLATION AND OPERATION MANUAL
NOTE S:
1
4420-006 INSTALLATION NOTES
ALL WIRES SHALL BE 22 AWG UNLES S OTHERWISE SPE CIFIED . ALL UNS HIELDE D
WIRE S HA LL B E S ELECTED IN A CCORDANCE WITH AC 43.13-1B CHANGE 1,
PA RAGRAP HS 11-76 THROUGH 11-78. WIRE TY PES SHOULD BE TO MI L-W-22759 AS
SP ECIFIE D IN AC43.13-1B CHANGE 1, PA RAGRAP HS 11-85, 11-86 AND LISTE D IN
TAB LE 11-11. ALL A UDIO WIRING SHALL BE TWIS TED, SHIE LDED PA IR CABLE IN
ACCORDA NCE WITH MIL-C-27500. TWISTE D, SHIE LDED PA IR CABLE DE SIGNATED
FOR HIGH SPE ED SIGNALS SHALL BE 100 OHM TWINAX (THERM AX MX100-24 OR
AP PROV ED EQUIVA LE NT).
2
3
4
5
6
7
8
CABLE SHIELDS S HALL TE RMINA TED TO THE A PPROPRIATE SHIE LD GROUND
PIN OF THE MODEL 4420-006's CONNE CTOR OR TO THE CONNECTOR
BA CKS HE LL (IF SO INDICATED). LEAD WIRES FROM SHIELDS T O EACH
CONNECT OR P IN SHALL BE LESS THAN 3 INCHES LONG. GROUND A LL AUDIO
CABLE SHIELDS A T ONE END ONLY.
DO NOT GROUND MICROPHONE INPUT LO, HEADPHONE LO, CANB US A1 SHLD-
EMR S WITCH, CANB US A2 SHLD-EMR P TT BY PAS S, CANB US B1 SHLD-EMR
SWITCH, OR CA NB US B2 SHLD-EMR P TT BY PAS S CONNECTIONS TO AIRFRA ME.
MIC INP UT LINE S S HA LL B E S EGREGATED A WA Y FROM A LL OTHER AIRCRAFT
WIRING AND CA BLE LENGTH SHOULD BE NO GREA TER THAN 1 METE R. IF
LENGT H GREA TER THA N 1 METE R IS RE QUIRED, ADDITIONAL OVE RBRAID
SHIE LDING MA Y B E REQUIRE D. CONSULT FACTORY FOR DETAILS.
AUX INPUTS ARE UNSWITCHE D, UNMUTED AND HAVE NO VOLUME CONTROL .
POWER WIRING FROM EACH POWER PIN OF THE MODEL 4420-006 CONNECT OR S HA LL B E
ROUTED A LL T HE WA Y TO THE CIRCUIT B RE AKE R. AS AN A LTE RNATIVE, THE P OWER
WIRES CA N B E S PLICED USING THE A LTE RNATE METHOD SHOWN . POWER RETURN
WIRING CA N BE ROUTED IN A SIMILAR FA SHION WITH THE POWER RETURN WIRES BEING
SP LICE D TO NO LE SS THA N ONE 18 AWG WIRE FOR E VERY 3 POWER RETURN PINS FROM
THE
MODEL 4420-006. THE CHA SSIS GROUND WIRE SHALL B E CONNECTED TO A LOCAL
AIRFRAME GROUND A ND THE WIRE SHALL BE NO LONGER THAN 0.3 METE RS.
POWER RETURN WIRING SHALL BE 1 METE R OR LE SS IN LENGTH.
8 OHM HEADPHONE AND 5 OHM NON-AMP LIFIE D DYNAMIC MICROP HONE
INTERFACES ARE S TANDARD FOR SVC 3 AND SVC4 HEADPHONES. 150 OHM
HEADPHONES AND 150 OHM AMP LIFIE D DYNAMIC MICROP HONE INTE RFACES
ARE STANDA RD FOR SV C1 AND SVC2 HEADPHONES. CONSULT FACTORY IF
ALTERNATE INTERFA CE S A RE RE QUIRED .
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 1)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 30
INSTALLATION AND OPERATION MANUAL
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 2)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 31
INSTALLATION AND OPERATION MANUAL
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 3)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 32
INSTALLATION AND OPERATION MANUAL
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 4)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 33
INSTALLATION AND OPERATION MANUAL
4420-804-0 Rev AA
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 5)
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 34
INSTALLATION AND OPERATION MANUAL
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 6)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 35
INSTALLATION AND OPERATION MANUAL
Figure 6 Wiring Diagram, Model 4420-006 AMU
(Sheet 7)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 36
P1-20
P1-21
P1-22
P1-23
P1-24
P1-25
P1-26
P1-27
P1-28
P1-29
P1-30
P1-31
P1-32
P1-1
P1-2
P1-3
P1-4
P1-5
P1-6
P1-7
P1-8
P1-9
P1-10
P1-11
P1-12
P1-13
P1-14
P1-15
P1-16
P1-17
P1-18
P1-19
P1-33
P1-34
P1-35
P1-36
P1-37
P1-38
INSTALLATION AND OPERATION MANUAL
Table 5 Pin Identification List, Numerical
Model 4420-000
P1 - 128-pin connector
28VDC-A
28VDC-A
28VDC-A
28VDC-B
28VDC-B
28VDC-B
XMT7 PTT(RESERVED)
XMT1 PTT(COM1)
XMT2 PTT(COM2)
XMT3 PTT(RESERVED)
XMT4 PTT(RESERVED)
XMT5 PTT(RESERVED)
XMT6 PTT(RESERVED)
XMT8 PTT(RESERVED)
XMT1 MIC HI(COM1)
XMT2 MIC HI(COM2)
XMT3 MIC HI(RESERVED)
XMT4 MIC HI(RESERVED)
XMT5 MIC HI(RESERVED)
BIT DISC OUT
XMT6 MIC HI(RESERVED)
XMT7 MIC HI(RESERVED)
XMT8 MIC HI(RESERVED)
PLT SPKR HI(RESERVED)
XMT1 MIC LO(COM1)
XMT2 MIC LO(COM2)
XMT3 MIC LO(RESERVED)
XMT4 MIC LO(RESERVED)
XMT5 MIC LO(RESERVED)
BKUP 28VDC
XMT6 MIC LO(RESERVED)
XMT7 MIC LO(RESERVED)
XMT8 MIC LO(RESERVED)
PLT SPKR LO(RESERVED)
ICS TIE LO(RESERVED)
DISC1 IN(OVERSPEED WARN)
DISC2 IN(MASTER WARN/CAUTION)
DISC3 IN(OVER G WARN)
Connector P1 PINOUT LIST
P1-39
P1-40
P1-41
P1-42
P1-43
P1-44
P1-45
P1-46
P1-47
P1-48
P1-49
P1-50
P1-51
P1-52
P1-53
P1-54
P1-55
P1-56
P1-57
P1-58
P1-59
P1-60
P1-61
P1-62
P1-63
P1-64
P1-65
P1-66
P1-67
P1-68
P1-69
P1-70
P1-71
P1-72
P1-73
P1-74
P1-75
P1-76
DISC4 IN(ALTITUDE WARN)
DISC5 IN(BINGO FUEL WARN)
DISC6 IN(LANDING GEAR WARN)
DISC7 IN(RESERVED)
DISC8 IN(RESERVED)
DISC9 IN(RESERVED)
DISC10 IN(RESERVED)
DISC11 IN(RESERVED)
ICS TIE HI(RESERVED)
RCVR1 RX HI(COM1)
RCVR2 RX HI(COM2)
RCVR3 RX HI(RESERVED)
RCVR4 RX HI(RESERVED)
RCVR5 RX HI(RESERVED)
RCVR6 RX HI(NAV)
RCVR7 RX HI(ADF)
RCVR8 RX HI(DME)
RCVR9 RX HI(MKR)
RCVR10 RX HI(RESERVED)
DISC12 IN(I-BIT)
RCVR1 RX LO(COM1)
RCVR2 RX LO(COM2)
RCVR3 RX LO(RESERVED)
RCVR4 RX LO(RESERVED)
RCVR5 RX LO(RESERVED)
RCVR6 RX LO(NAV)
RCVR7 RX LO(ADF)
RCVR8 RX LO(DME)
RCVR9 RX LO(MKR)
RCVR10 RX LO(RESERVED)
RCVR11 RX LO(RESERVED)
RCVR11 RX HI(RESERVED)
RCVR12 RX HI(RESERVED)
RCVR13 RX HI(RESERVED)
AUX3 HI
AUX2 HI
AUX1 HI(TAS)
AUX4 HI
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 37
INSTALLATION AND OPERATION MANUAL
Table 5 Pin Identification List, Numerical (continued)
Model 4420-000 (continued)
P1 - 128-pin connector (continued)
Connector P1 PINOUT LIST (continued)
P1-88
P1-89
P1-90
P1-91
P1-92
P1-93
P1-94
P1-95
P1-96
P1-97
P1-98
P1-99
P1-100
P1-101
P1-102
P1-77
P1-78
P1-79
P1-80
P1-81
P1-82
P1-83
P1-84
P1-85
P1-86
P1-87
RCVR14 RX HI(RESERVED)
RCVR15 RX HI(RESERVED)
DISC13 IN(RESERVED)
DISC14 IN(RESERVED)
DISC15 IN(RESERVED)
RCVR12 RX LO(RESERVED)
RCVR13 RX LO(RESERVED)
AUX3 LO
AUX2 LO
AUX1 LO(TAS)
AUX4 LO
RCVR14 RX LO(RESERVED)
RCVR15 RX LO(RESERVED)
DISC16 IN(RESERVED)
DISC17 IN(RESERVED)
DISC18 IN(RESERVED)
DISC19 IN(RESERVED)
SVC1 MIC HI
SVC2 MIC HI
SVC3 MIC HI
SVC4 MIC HI
DISC20 IN(RESERVED)
DISC21 IN(RESERVED)
SVC4 PTT
SVC2 PTT
DISC22 IN(RESERVED)
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
P1-103
P1-104
P1-105
P1-106
P1-107
P1-108
P1-109
P1-110
P1-111
P1-112
P1-113
P1-114
P1-115
P1-116
P1-117
P1-118
P1-119
P1-120
P1-121
P1-122
P1-123
P1-124
P1-125
P1-126
P1-127
P1-128
PLT CVR HI
CPLT CVR HI
SVC1 MIC LO
SVC2 MIC LO
SVC3 MIC LO
SVC4 MIC LO
DISC23 IN(RESERVED)
DISC24 IN(RESERVED)
SVC3 PTT
SVC1 PTT
PLT CVR LO
CPLT CVR LO
SVC1 HDPH HI
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
SVC1 HDPH LO
SVC2 HDPH HI
SVC2 HDPH LO
SVC3 HDPH HI
SVC3 HDPH LO
SVC4 HDPH HI
SVC4 HDPH LO
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 38
INSTALLATION AND OPERATION MANUAL
Table 6 Pin Identification List, Numerical
Model 4420-000
P2 - 79-pin connector
Connector P2 PINOUT LIST
P2-1
P2-2
P2-3
P2-4
P2-5
P2-6
P2-7
P2-8
P2-9
P2-10
P2-11
P2-12
P2-13
P2-14
P2-15
P2-16
P2-17
P2-18
P2-19
P2-20
P2-21
P2-22
P2-23
PLT CANBUS A1 SHLD-PLT EMR
SWITCH
TX1-429-A(RESERVED)
TX1-429-B(RESERVED)
TX2-429-A(RESERVED)
TX3-429-A(RESERVED)
TX4-429-A(RESERVED)
RS232 TX-A(N/C)
RS232 TX-B(N/C)
RX1-429-A(RESERVED)
RX2-429-A(RESERVED)
RX2 SHLD(RESERVED)
RX3-429-A(RESERVED)
RX3 SHLD(RESERVED)
N/C
N/C
N/C
PLT AMU MIC IN HI
PLT AMU HDPH OUT HI
PLT AMU HDPH SHLD
CPLT CANBUS B1 HI
CPLT CANBUS A2 HI
N/C
N/C
P2-24
P2-25
P2-26
P2-27
P2-28
P2-29
P2-30
P2-31
P2-32
P2-33
P2-34
P2-35
P2-36
P2-37
P2-38
P2-39
P2-40
CPLT AMU HDPH SHLD
CPLT AMU HDPH OUT HI
CPLT AMU MIC IN HI
PLT CANBUS B2 HI
PLT CANBUS A1 HI
PLT CANBUS B2 LO
TX1 SHLD(RESERVED)
TX2-429-B(RESERVED)
TX3-429-B(RESERVED)
TX4-429-B(RESERVED)
RS232 GND
N/C
RX1-429-B(RESERVED)
RX2-429-B(RESERVED)
RX3-429-B(RESERVED)
CHASSIS GND
N/C
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
P2-41 N/C
P2-42 PLT AMU HDPH OUT LO
P2-43 PLT AMU MIC IN LO
P2-44 CPLT CANBUS A2 LO
P2-45 CPLT CANBUS B1 LO
P2-46 N/C
P2-47 N/C
P2-48 CPLT AMU MIC IN LO
P2-49 CPLT AMU HDPH OUT LO
P2-50 PLT CANBUS A1 LO
P2-51 PLT CANBUS B2 SHLD-PLT EMR PTT
BYPASS
P2-52 TX2 SHLD(RESERVED)
P2-53 TX3 SHLD(RESERVED)
P2-54 TX4 SHLD(RESERVED)
P2-55 N/C
P2-56 N/C
P2-57 RX1 SHLD(RESERVED)
P2-58 RX4-429-A(RESERVED)
P2-59 RX4 SHLD(RESERVED)
P2-60 N/C
P2-61 PLT AMU MIC SHLD
P2-62 CPLT CANBUS B1 SHLD-CPLT EMR
SWITCH
P2-63 CPLT CANBUS A2 SHLD-CPLT EMR PTT
BYPASS
P2-64 N/C
P2-65 N/C
P2-66 CPLT AMU MIC SHLD
P2-67 N/C
P2-68 GND
P2-69 RS232 RX-B(N/C)
P2-70 RS232 RX-A(N/C)
P2-71 RX4-429-B(RESERVED)
P2-72 USB2 SHLD(RESERVED)
P2-73 USB2 D-(RESERVED)
P2-74 USB2 D+(RESERVED)
P2-75 USB1 D+(RESERVED)
P2-76 USB1 SHLD(RESERVED)
P2-77 USB2 SEL 5V(RESERVED)
P2-78 USB1 SEL 5V(RESERVED)
P2-79 USB1 D-(RESERVED)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 39
INSTALLATION AND OPERATION MANUAL
Connector P1 CONNECTOR MAP
8
1
XMT1 PTT
XMT1 MIC HI
25
15
XMT1 MIC LO
DISC1 IN
36
DISC2 IN
59
RCVR12 RX LO
48
RCVR1 RX LO
RCVR1 RX HI
RCVR12 RX HI
(RESERVED)
RCVR2 RX LO
71
(RESERVED)
82
SVC1 MIC HI
94
SVC1 MIC LO
RCVR13 RX LO
(RESERVED)
105
115
XMT2 MIC LO
RCVR2 RX HI
RCVR13 RX HI
(RESERVED)
SVC2 MIC HI
SVC1 HPDH HI
DISC3 IN
XMT2 MIC HI
RCVR3 RX LO
(RESERVED)
AUX3 LO
SVC2 MIC LO
28VDC-A
XMT3 MIC LO
(RESERVED)
RCVR3 RX HI
(RESERVED)
AUX3 HI
SVC3 MIC HI
SVC1 HPDH LO
DISC4 IN AUX2 LO
XMT3 MIC HI
(RESERVED)
RCVR4 RX LO
(RESERVED)
SVC3 MIC LO
28VDC-A XMT2 PTT
XMT4 MIC LO
(RESERVED)
RCVR4 RX HI
(RESERVED)
AUX2 HI
SVC4 MIC HI
PWR RETURN
SVC2 HPDH HI
DISC5 IN
XMT4 MIC HI
(RESERVED)
RCVR5 RX LO
(RESERVED)
AUX1 LO
SVC4 MIC LO
28VDC-A XMT3 PTT
(RESERVED)
XMT5 MIC LO
(RESERVED)
RCVR5 RX HI
(RESERVED)
AUX1 HI
DISC20 IN
(RESERVED)
PWR RETURN
SVC2 HPDH LO
XMT5 MIC HI
(RESERVED)
DISC6 IN
RCVR6 RX LO
AUX4 LO
28VDC-B
4
XMT4 PTT
(RESERVED)
BKUP 28VDC
RCVR6 RX HI
AUX4 HI
DISC21 IN
(RESERVED)
DISC23 IN
(RESERVED)
PWR RETURN
125
SVC3 HPDH HI
28VDC-B
28VDC-B
7
XMT5 PTT
(RESERVED)
BIT DISC OUT
XMT6 MIC LO
(RESERVED)
DISC7 IN
(RESERVED)
RCVR7 RX LO
RCVR7 RX HI
RCVR14 RX LO
(RESERVED)
SVC4 PTT
RCVR14 RX HI
(RESERVED)
DISC24 IN
(RESERVED)
PWR RETURN
XMT6 MIC HI
(RESERVED)
DISC8 IN
(RESERVED)
RCVR8 RX LO
RCVR15 RX LO
(RESERVED)
SVC3 PTT
XMT6 PTT
(RESERVED)
XMT7 MIC LO
(RESERVED)
RCVR8 RX HI
RCVR15 RX HI
(RESERVED)
SVC2 PTT
SVC3 HPDH LO
PWR RETURN SVC4 HPDH HI
XMT7 MIC HI
(RESERVED)
DISC9 IN
(RESERVED)
RCVR9 RX LO
DISC16 IN
(RESERVED)
SVC1 PTT
XMT7 PTT
(RESERVED)
N/C
N/C
14
N/C
N/C
DISC10 IN
(RESERVED)
RCVR9 RX HI
RCVR10 RX HI
(RESERVED)
DISC13 IN
(RESERVED)
RCVR10 RX LO
(RESERVED)
DISC14 IN
(RESERVED)
DISC17 IN
(RESERVED)
DISC22 IN
(RESERVED)
SVC4 HPDH LO
PWR RETURN
128
PLT CVR LO
PLT CVR HI
121
N/C
24
N/C
35
DISC11 IN
(RESERVED)
ICS TIE HI
(RESERVED)
47
RCVR11 RX LO
(RESERVED)
DISC18 IN
(RESERVED)
DISC12 IN
(I-BIT)
58
70
RCVR11 RX HI
(RESERVED)
CPLT CVR HI
DISC15 IN
(RESERVED)
81
DISC19 IN
(RESERVED)
104
93
CPLT CVR LO
114
CONNECTOR P1
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
Figure 7. P1 Connector Map for Model 4420-000
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 40
INSTALLATION AND OPERATION MANUAL
Connector P2 CONNECTOR MAP
1
TX1-429-A
(RESERVED)
PLT CANBUS A1 HI
PLT CANBUS A1 SHLD-
PLT EMR SWITCH
PLT CANBUS B2 HI
CPLT AMU MIC IN HI
TX1-429-B
(RESERVED)
CPLT AMU HDPH OUT HI
PLT CANBUS
A1 LO
CPLT AMU HDPH OUT LO
PLT CANBUS B2 LO
TX1 SHLD
(RESERVED)
51
31
TX2-429-B
(RESERVED)
CPLT AMU HDPH SHLD
CPLT AMU MIC IN LO
PLT CANBUS B2 SHLD-
PLT EMR PTT BYPASS
CPLT AMU MIC SHLD
TX2 SHLD
(RESERVED)
TX3 SHLD
(RESERVED)
TX2-429-A
(RESERVED)
TX3-429-B
(RESERVED)
TX3-429-A
(RESERVED)
N/C N/C
N/C
N/C GND
TX4 SHLD
(RESERVED)
TX4-429-B
(RESERVED)
TX4-429-A
(RESERVED)
CPLT CANBUS B1 HI
CPLT CANBUS
A2 LO
USB1 SHLD
(RESERVED)
RS232 RX-B
N/C N/C
N/C
USB2 SEL 5V
(RESERVED)
21
CPLT CANBUS B1 LO
CPLT CANBUS A2 HI
RS232 RX-A
USB1 D+
(RESERVED)
USB1 SEL 5V
CPLT CANBUS A2 SHLD
CPLT EMR PTT BYPASS
USB2 D+
USB1 D-
(RESERVED)
(RESERVED)
(RESERVED)
USB2 SHLD
(RESERVED)
71
RX4-429-B
(RESERVED)
CPLT CANBUS B1 SHLD
CPLT EMR SWITCH
61
USB2 D-
(RESERVED)
RX1 SHLD
(RESERVED)
N/C
N/C
RS232 GND
N/C
RX1-429-B
(RESERVED)
RS232 TX-A
RS232 TX-B
RX1-429-A
(RESERVED)
PLT AMU MIC SHLD
PLT AMU MIC IN LO
PLT AMU HDPH SHLD
PLT AMU HDPH OUT LO
41
PLT AMU HDPH OUT HI
N/C
N/C
N/C
RX4-429-A
(RESERVED)
RX4 SHLD
(RESERVED)
RX2-429-B
(RESERVED)
11
CHASSIS GND
RX3-429-B
(RESERVED)
RX2 SHLD
(RESERVED)
RX2-429-A
(RESERVED)
PLT AMU MIC IN HI
RX3-429-A
(RESERVED)
N/C
RX3 SHLD
(RESERVED)
N/C
N/C
CONNECTOR P2
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
Figure 8. P2 Connector Map for Model 4420-000
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 41
P1-16
P1-17
P1-18
P1-19
P1-20
P1-21
P1-22
P1-23
P1-24
P1-25
P1-26
P1-1
P1-2
P1-3
P1-4
P1-5
P1-6
P1-7
P1-8
P1-9
P1-10
P1-11
P1-12
P1-13
P1-14
P1-15
P1-27
P1-28
P1-29
P1-30
P1-31
P1-32
P1-33
P1-34
P1-35
P1-36
P1-37
P1-38
INSTALLATION AND OPERATION MANUAL
Table 7 Pin Identification List, Numerical
Model 4420-003
P1 - 128-pin connector
Connector P1 PINOUT LIST
28VDC-A
28VDC-A
28VDC-A
28VDC-B
28VDC-B
28VDC-B
XMT7 PTT(RESERVED)
XMT1 PTT(COM1)
XMT2 PTT(COM2)
XMT3 PTT(RESERVED)
XMT4 PTT(RESERVED)
XMT5 PTT(RESERVED)
XMT6 PTT(RESERVED)
XMT8 PTT(RESERVED)
XMT1 MIC HI(COM1)
XMT2 MIC HI(COM2)
XMT3 MIC HI(RESERVED)
XMT4 MIC HI(RESERVED)
XMT5 MIC HI(RESERVED)
BIT DISC OUT
XMT6 MIC HI(RESERVED)
XMT7 MIC HI(RESERVED)
XMT8 MIC HI(RESERVED)
PLT SPKR HI(RESERVED)
XMT1 MIC LO(COM1)
XMT2 MIC LO(COM2)
XMT3 MIC LO(RESERVED)
XMT4 MIC LO(RESERVED)
XMT5 MIC LO(RESERVED)
BKUP 28VDC
XMT6 MIC LO(RESERVED)
XMT7 MIC LO(RESERVED)
XMT8 MIC LO(RESERVED)
PLT SPKR LO(RESERVED)
ICS TIE LO(RESERVED)
DISC1 IN(OVERSPEED WARN)
DISC2 IN(MASTER WARN/CAUTION)
DISC3 IN(OVER G WARN)
P1-39
P1-40
P1-41
P1-42
P1-43
P1-44
P1-45
P1-46
P1-47
P1-48
P1-49
P1-50
P1-51
P1-52
P1-53
P1-54
P1-55
P1-56
P1-57
P1-58
P1-59
P1-60
P1-61
P1-62
P1-63
P1-64
P1-65
P1-66
P1-67
P1-68
P1-69
P1-70
P1-71
P1-72
P1-73
P1-74
P1-75
P1-76
DISC4 IN(ALTITUDE WARN)
DISC5 IN(BINGO FUEL WARN)
DISC6 IN(LANDING GEAR WARN)
DISC7 IN(WARNING 7)(RESERVED)
DISC8 IN(WARNING 8)(RESERVED)
DISC9 IN(WARNING 9)(RESERVED)
DISC10 IN(WARNING 10)(RESERVED)
DISC11 IN(WARNING 11)(RESERVED)
ICS TIE HI(RESERVED)
RCVR1 RX HI(COM1)
RCVR2 RX HI(COM2)
RCVR3 RX HI(RESERVED)
RCVR4 RX HI(RESERVED)
RCVR5 RX HI(RESERVED)
RCVR6 RX HI(NAV)
RCVR7 RX HI(ADF)
RCVR8 RX HI(DME)
RCVR9 RX HI(MKR)
RCVR10 RX HI(RESERVED)
DISC12 IN(I-BIT)
RCVR1 RX LO(COM1)
RCVR2 RX LO(COM2)
RCVR3 RX LO(RESERVED)
RCVR4 RX LO(RESERVED)
RCVR5 RX LO(RESERVED)
RCVR6 RX LO(NAV)
RCVR7 RX LO(ADF)
RCVR8 RX LO(DME)
RCVR9 RX LO(MKR)
RCVR10 RX LO(RESERVED)
RCVR11 RX LO(RESERVED)
RCVR11 RX HI(RESERVED)
RCVR12 RX HI(RESERVED)
RCVR13 RX HI(RESERVED)
AUX3 HI(RESERVED)
AUX2 HI
AUX1 HI(TAS)
AUX4 HI
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 42
P1-88
P1-89
P1-90
P1-91
P1-92
P1-93
P1-94
P1-95
P1-96
P1-97
P1-98
P1-99
P1-100
P1-101
P1-102
P1-77
P1-78
P1-79
P1-80
P1-81
P1-82
P1-83
P1-84
P1-85
P1-86
P1-87
INSTALLATION AND OPERATION MANUAL
Table 7 Pin Identification List, Numerical (continued)
Model 4420-003 (continued)
P1 - 128-pin connector (continued)
Connector P1 PINOUT LIST (continued)
RCVR14 RX HI(RESERVED)
RCVR15 RX HI(RESERVED)
DISC13 IN(AW TEST)
DISC14 IN(RESERVED)
DISC15 IN(RESERVED)
RCVR12 RX LO(RESERVED)
RCVR13 RX LO(RESERVED)
AUX3 LO(RESERVED)
AUX2 LO
AUX1 LO(TAS)
AUX4 LO
RCVR14 RX LO(RESERVED)
RCVR15 RX LO(RESERVED)
DISC16 IN(RESERVED)
DISC17 IN(RESERVED)
DISC18 IN(RESERVED)
DISC19 IN(RESERVED)
SVC1 MIC HI
SVC2 MIC HI
SVC3 MIC HI
SVC4 MIC HI
DISC20 IN(RESERVED)
DISC21 IN(RESERVED)
SVC4 PTT
SVC2 PTT
DISC22 IN(RESERVED)
P1-103
P1-104
P1-105
P1-106
P1-107
P1-108
P1-109
P1-110
P1-111
P1-112
P1-113
P1-114
P1-115
P1-116
P1-117
P1-118
P1-119
P1-120
P1-121
P1-122
P1-123
P1-124
P1-125
P1-126
P1-127
P1-128
PLT CVR HI
CPLT CVR HI
SVC1 MIC LO
SVC2 MIC LO
SVC3 MIC LO
SVC4 MIC LO
DISC23 IN(RESERVED)
DISC24 IN(RESERVED)
SVC3 PTT
SVC1 PTT
PLT CVR LO
CPLT CVR LO
SVC1 HDPH HI
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
SVC1 HDPH LO
SVC2 HDPH HI
SVC2 HDPH LO
SVC3 HDPH HI
SVC3 HDPH LO
SVC4 HDPH HI
SVC4 HDPH LO
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 43
INSTALLATION AND OPERATION MANUAL
Table 8. Pin Identification List, Numerical
Model 4420-003
P2 - 79-pin connector
Connector P2 PINOUT LIST
P2-1
P2-2
P2-3
P2-4
P2-5
P2-6
P2-7
P2-8
P2-9
P2-10
P2-11
P2-12
P2-13
P2-14
P2-15
P2-16
P2-17
P2-18
P2-19
P2-20
P2-21
P2-22
P2-23
PLT CANBUS A1 SHLD-PLT EMR
SWITCH
TX1-429-A(AIC1)
TX1-429-B(AIC1)
TX2-429-A(RESERVED)
TX3-429-A(RESERVED)
TX4-429-A(RESERVED)
RS232 TX-A(N/C)
RS232 TX-B(N/C)
RX1-429-A/TX1-429-A(AIC2)
RX2-429-A(RESERVED)
RX2 SHLD(RESERVED)
RX3-429-A(RESERVED)
RX3 SHLD(RESERVED)
N/C
N/C
N/C
PLT AMU MIC IN HI
PLT AMU HDPH OUT HI
PLT AMU HDPH SHLD
CPLT CANBUS B1 HI
CPLT CANBUS A2 HI
N/C
N/C
1
P2-24
P2-25
P2-26
P2-27
P2-28
P2-29
P2-30
P2-31
P2-32
P2-33
P2-34
P2-35
P2-36
P2-37
P2-38
P2-39
P2-40
CPLT AMU HDPH SHLD
CPLT AMU HDPH OUT HI
CPLT AMU MIC IN HI
PLT CANBUS B2 HI
PLT CANBUS A1 HI
PLT CANBUS B2 LO
TX1 SHLD(AIC1)
TX2-429-B(RESERVED)
TX3-429-B(RESERVED)
TX4-429-B(RESERVED)
RS232 GND
N/C
RX1-429-B/TX1-429-B(AIC2)
1
RX2-429-B(RESERVED)
RX3-429-B(RESERVED)
CHASSIS GND
N/C
Note 1: TX1-429 and RX1-429 are internally tied together.
P2-41 N/C
P2-42 PLT AMU HDPH OUT LO
P2-43 PLT AMU MIC IN LO
P2-44 CPLT CANBUS A2 LO
P2-45 CPLT CANBUS B1 LO
P2-46 N/C
P2-47 N/C
P2-48 CPLT AMU MIC IN LO
P2-49 CPLT AMU HDPH OUT LO
P2-50 PLT CANBUS A1 LO
P2-51 PLT CANBUS B2 SHLD-PLT EMR PTT
BYPASS
P2-52 TX2 SHLD(RESERVED)
P2-53 TX3 SHLD(RESERVED)
P2-54 TX4 SHLD(RESERVED)
P2-55 N/C
P2-56 N/C
P2-57 RX1 SHLD(AIC2)
P2-58 RX4-429-A(RESERVED)
P2-59 RX4 SHLD(RESERVED)
P2-60 N/C
P2-61 PLT AMU MIC SHLD
P2-62 CPLT CANBUS B1 SHLD-CPLT EMR
SWITCH
P2-63 CPLT CANBUS A2 SHLD-CPLT EMR PTT
BYPASS
P2-64 N/C
P2-65 N/C
P2-66 CPLT AMU MIC SHLD
P2-67 N/C
P2-68 GND
P2-69 RS232 RX-B(N/C)
P2-70 RS232 RX-A(N/C)
P2-71 RX4-429-B(RESERVED)
P2-72 USB2 SHLD(RESERVED)
P2-73 USB2 D-(RESERVED)
P2-74 USB2 D+(RESERVED)
P2-75 USB1 D+(RESERVED)
P2-76 USB1 SHLD(RESERVED)
P2-77 USB2 SEL 5V(RESERVED)
P2-78 USB1 SEL 5V(RESERVED)
P2-79 USB1 D-(RESERVED)
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 44
INSTALLATION AND OPERATION MANUAL
Connector P1 CONNECTOR MAP
8
1
XMT1 PTT
XMT1 MIC HI
25
15
XMT1 MIC LO
DISC1 IN
36
DISC2 IN
48
RCVR1 RX HI
59
RCVR2 RX LO
RCVR12 RX LO
RCVR1 RX LO
71
(RESERVED)
82
SVC1 MIC HI
94
SVC1 MIC LO
RCVR12 RX HI
(RESERVED)
RCVR13 RX LO
(RESERVED)
105
115
XMT2 MIC LO
RCVR2 RX HI
RCVR13 RX HI
(RESERVED)
SVC2 MIC HI
SVC1 HPDH HI
DISC3 IN
XMT2 MIC HI
RCVR3 RX LO
(RESERVED)
AUX3 LO
SVC2 MIC LO
28VDC-A
XMT3 MIC LO
(RESERVED)
RCVR3 RX HI
(RESERVED)
AUX3 HI
SVC3 MIC HI
SVC1 HPDH LO
DISC4 IN
XMT3 MIC HI
(RESERVED)
RCVR4 RX LO
(RESERVED)
AUX2 LO
SVC3 MIC LO
28VDC-A XMT2 PTT
XMT4 MIC LO
(RESERVED)
RCVR4 RX HI
(RESERVED)
AUX2 HI
SVC4 MIC HI
PWR RETURN
SVC2 HPDH HI
DISC5 IN
XMT4 MIC HI
(RESERVED)
RCVR5 RX LO
(RESERVED)
AUX1 LO
SVC4 MIC LO
28VDC-A XMT3 PTT
(RESERVED)
XMT5 MIC LO
(RESERVED)
RCVR5 RX HI
(RESERVED)
AUX1 HI
DISC20 IN
(RESERVED)
PWR RETURN
SVC2 HPDH LO
XMT5 MIC HI
(RESERVED)
DISC6 IN
RCVR6 RX LO
AUX4 LO
28VDC-B
4
XMT4 PTT
(RESERVED)
BKUP 28VDC
RCVR6 RX HI
AUX4 HI
DISC21 IN
(RESERVED)
DISC23 IN
(RESERVED)
PWR RETURN
125
SVC3 HPDH HI
28VDC-B
28VDC-B
7
XMT7 PTT
(RESERVED)
BIT DISC OUT
XMT5 PTT
(RESERVED)
XMT6 MIC LO
(RESERVED)
DISC7 IN
(WARNING7)
(RESERVED)
RCVR7 RX LO
RCVR7 RX HI
RCVR14 RX LO
(RESERVED)
(RESERVED)
RCVR14 RX HI
SVC4 PTT
XMT6 PTT
(RESERVED)
XMT6 MIC HI
(RESERVED)
XMT7 MIC LO
(RESERVED)
DISC8 IN
(WARNING8)
(RESERVED)
RCVR8 RX LO
RCVR8 RX HI
RCVR15 RX LO
(RESERVED)
RCVR15 RX HI
(RESERVED)
SVC2 PTT
DISC24 IN
(RESERVED)
SVC3 PTT
PWR RETURN
SVC3 HPDH LO
PWR RETURN SVC4 HPDH HI
XMT8 PTT
(RESERVED)
14
XMT7 MIC HI
(RESERVED)
DISC9 IN
(WARNING9)
(RESERVED)
RCVR9 RX LO
DISC16 IN
(RESERVED)
SVC1 PTT
XMT8 MIC HI
(RESERVED)
XMT8 MIC LO
(RESERVED)
PLT SPKR LO
(RESERVED)
DISC10 IN
(WARNING10)
(RESERVED)
RCVR9 RX HI
RCVR10 RX HI
(RESERVED)
DISC13 IN
(AW TEST)
RCVR10 RX LO
(RESERVED)
DISC14 IN
(RESERVED)
DISC17 IN
(RESERVED)
DISC22 IN
(RESERVED)
PWR RETURN
128
PLT CVR LO
SVC4 HPDH LO
PLT CVR HI
121
PLT SPKR HI
(RESERVED)
24
ICS TIE LO
(RESERVED)
DISC11 IN
(WARNING11)
(RESERVED)
35
ICS TIE HI
(RESERVED)
47
DISC12 IN
(I-BIT)
58
RCVR11 RX LO
(RESERVED)
DISC18 IN
(RESERVED)
CPLT CVR HI
CPLT CVR LO
114
70
DISC15 IN
(RESERVED)
RCVR11 RX HI
(RESERVED)
81
DISC19 IN
(RESERVED)
93
104
CONNECTOR P1
Figure 9. P1 Connector Map for Model 4420-003
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 45
INSTALLATION AND OPERATION MANUAL
Connector P2 CONNECTOR MAP
1
TX1-429-A
(AIC1)
PLT CANBUS A1 HI
PLT CANBUS A1 SHLD-
PLT EMR SWITCH
PLT CANBUS B2 HI
CPLT AMU MIC IN HI
TX1-429-B
(AIC1)
CPLT AMU HDPH OUT HI
PLT CANBUS
A1 LO
CPLT AMU HDPH OUT LO
PLT CANBUS B2 LO
TX1 SHLD
(AIC1)
51
31
TX2-429-B
(RESERVED)
CPLT AMU HDPH SHLD
CPLT AMU MIC IN LO
PLT CANBUS B2 SHLD-
PLT EMR PTT BYPASS
CPLT AMU MIC SHLD
TX2 SHLD
(RESERVED)
TX3 SHLD
(RESERVED)
TX2-429-A
(RESERVED)
TX3-429-B
(RESERVED)
TX3-429-A
(RESERVED)
N/C N/C
N/C
N/C GND
TX4 SHLD
(RESERVED)
TX4-429-B
(RESERVED)
TX4-429-A
(RESERVED)
RS232 RX-B
USB1 SHLD
(RESERVED)
N/C N/C USB2 SEL 5V
N/C
(RESERVED)
21
CPLT CANBUS B1 LO
CPLT CANBUS A2 HI
RS232 RX-A
USB1 D+
(RESERVED)
USB1 SEL 5V
CPLT CANBUS A2 SHLD
CPLT EMR PTT BYPASS
USB2 D+
USB1 D-
(RESERVED)
(RESERVED)
(RESERVED)
USB2 SHLD
(RESERVED)
71
RX4-429-B
(RESERVED)
CPLT CANBUS B1 HI
CPLT CANBUS
A2 LO
CPLT CANBUS B1 SHLD
CPLT EMR SWITCH
61
USB2 D-
(RESERVED)
RX1 SHLD
(AIC2)
N/C
N/C
PLT AMU MIC SHLD
PLT AMU MIC IN LO
PLT AMU HDPH SHLD
PLT AMU HDPH OUT LO
41
PLT AMU HDPH OUT HI
N/C
N/C
RS232 GND
N/C
RX1-429-B
/TX1-429-B
(AIC2)
RS232 TX-A
RS232 TX-B
RX1-429-A
/TX1-429-A
(AIC2)
N/C
RX4 SHLD
(RESERVED)
RX4-429-A
(RESERVED)
RX2-429-B
(RESERVED)
11
CHASSIS GND
RX3-429-B
(RESERVED)
RX2 SHLD
(RESERVED)
RX2-429-A
(RESERVED)
PLT AMU MIC IN HI
RX3-429-A
(RESERVED)
N/C
RX3 SHLD
(RESERVED)
N/C
N/C
CONNECTOR P2
4420-804-0 Rev AA
Figure 10. P6 Connector Map for Model 4420-003
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 46
INSTALLATION AND OPERATION MANUAL
Table 9 Pin Identification List, Numerical
Model 4420-006
P1 - 128-pin connector
P1-22
P1-23
P1-24
P1-25
P1-26
P1-27
P1-28
P1-29
P1-30
P1-31
P1-32
P1-33
P1-34
P1-35
P1-36
P1-37
P1-38
P1-1
28VDC-A
P1-2
P1-3
28VDC-A
28VDC-A
P1-4
P1-5
28VDC-B
I
28VDC-B
P1-6
P1-7
P1-8
28VDC-B
XMT7 PTT(RESERVED)
XMT1 PTT(COM1)
P1-9
P1-10
P1-11
P1-12
P1-13
P1-14
P1-15
P1-16
P1-17
P1-18
P1-19
P1-20
P1-21
XMT2 PTT(COM2)
XMT3 PTT(RESERVED)
XMT4 PTT(RESERVED)
XMT5 PTT(RESERVED)
XMT6 PTT(RESERVED)
XMT8 PTT(RESERVED)
XMT1 MIC HI(COM1)
XMT2 MIC HI(COM2)
XMT3 MIC HI(RESERVED)
XMT4 MIC HI(RESERVED)
XMT5 MIC HI(RESERVED)
BIT DISC OUT
XMT6 MIC HI(RESERVED)
XMT7 MIC HI(RESERVED)
XMT8 MIC HI(RESERVED)
PLT SPKR HI(RESERVED)
XMT1 MIC LO(COM1)
XMT2 MIC LO(COM2)
XMT3 MIC LO(RESERVED)
XMT4 MIC LO(RESERVED)
XMT5 MIC LO(RESERVED)
BKUP 28VDC
XMT6 MIC LO(RESERVED)
XMT7 MIC LO(RESERVED)
XMT8 MIC LO(RESERVED)
PLT SPKR LO(RESERVED)
ICS TIE LO(RESERVED)
DISC1 IN(OVERSPEED WARN)
DISC2 IN(MASTER WARN/CAUTION)
DISC3 IN(OVER G WARN)
Connector P1 PINOUT LIST
P1-39
P1-40
P1-41
P1-42
P1-43
P1-44
P1-45
P1-46
P1-47
P1-48
P1-49
P1-50
P1-51
P1-52
P1-53
P1-54
P1-55
P1-56
P1-57
P1-58
P1-59
P1-60
P1-61
P1-62
P1-63
P1-64
P1-65
P1-66
P1-67
P1-68
P1-69
P1-70
P1-71
P1-72
P1-73
P1-74
P1-75
P1-76
DISC4 IN(ALTITUDE WARN)
DISC5 IN(BINGO FUEL WARN)
DISC6 IN(LANDING GEAR WARN)
DISC7 IN(INFRARED MISSILE WARN)
DISC8 IN(MISSILE GUIDANCE WARN)
DISC9 IN(TARGET THREAT WARN)
DISC10 IN(RESERVED)
DISC11 IN(RESERVED)
ICS TIE HI(RESERVED)
RCVR1 RX HI(COM1)
RCVR2 RX HI(COM2)
RCVR3 RX HI(RESERVED)
RCVR4 RX HI(RESERVED)
RCVR5 RX HI(RESERVED)
RCVR6 RX HI(NAV)
RCVR7 RX HI(ADF)
RCVR8 RX HI(DME)
RCVR9 RX HI(MKR)
RCVR10 RX HI(RESERVED)
DISC12 IN(I-BIT)
RCVR1 RX LO(COM1)
RCVR2 RX LO(COM2)
RCVR3 RX LO(RESERVED)
RCVR4 RX LO(RESERVED)
RCVR5 RX LO(RESERVED)
RCVR6 RX LO(NAV)
RCVR7 RX LO(ADF)
RCVR8 RX LO(DME)
RCVR9 RX LO(MKR)
RCVR10 RX LO(RESERVED)
RCVR11 RX LO(RESERVED)
RCVR11 RX HI(RESERVED)
RCVR12 RX HI(RESERVED)
RCVR13 RX HI(RESERVED)
AUX3 HI
AUX2 HI
AUX1 HI(TAS)
AUX4 HI
Connector P1 PINOUT LIST
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 47
INSTALLATION AND OPERATION MANUAL
Table 5 Pin Identification List, Numerical (continued)
Model 4420-006 (continued)
P1 - 128-pin connector (continued)
Connector P1 PINOUT LIST (continued)
P1-88
P1-89
P1-90
P1-91
P1-92
P1-93
P1-94
P1-95
P1-96
P1-97
P1-98
P1-99
P1-100
P1-101
P1-102
P1-77
P1-78
P1-79
P1-80
P1-81
P1-82
P1-83
P1-84
P1-85
P1-86
P1-87
RCVR14 RX HI(RESERVED)
RCVR15 RX HI(RESERVED)
DISC13 IN(RESERVED)
DISC14 IN(RESERVED)
DISC15 IN(RESERVED)
RCVR12 RX LO(RESERVED)
RCVR13 RX LO(RESERVED)
AUX3 LO
AUX2 LO
AUX1 LO(TAS)
AUX4 LO
RCVR14 RX LO(RESERVED)
RCVR15 RX LO(RESERVED)
DISC16 IN(RESERVED)
DISC17 IN(RESERVED)
DISC18 IN(RESERVED)
DISC19 IN(RESERVED)
SVC1 MIC HI
SVC2 MIC HI
SVC3 MIC HI
SVC4 MIC HI
DISC20 IN(RESERVED)
DISC21 IN(RESERVED)
SVC4 PTT
SVC2 PTT
DISC22 IN(RESERVED)
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
P1-103
P1-104
P1-105
P1-106
P1-107
P1-108
P1-109
P1-110
P1-111
P1-112
P1-113
P1-114
P1-115
P1-116
P1-117
P1-118
P1-119
P1-120
P1-121
P1-122
P1-123
P1-124
P1-125
P1-126
P1-127
P1-128
PLT CVR HI
CPLT CVR HI
SVC1 MIC LO
SVC2 MIC LO
SVC3 MIC LO
SVC4 MIC LO
DISC23 IN(RESERVED)
DISC24 IN(RESERVED)
SVC3 PTT
SVC1 PTT
PLT CVR LO
CPLT CVR LO
SVC1 HDPH HI
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
PWR RETURN
SVC1 HDPH LO
SVC2 HDPH HI
SVC2 HDPH LO
SVC3 HDPH HI
SVC3 HDPH LO
SVC4 HDPH HI
SVC4 HDPH LO
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 48
INSTALLATION AND OPERATION MANUAL
Table 10 Pin Identification List, Numerical
Model 4420-006
P2 - 79-pin connector
Connector P2 PINOUT LIST
P2-1
P2-2
P2-3
P2-4
P2-5
P2-6
P2-7
P2-8
P2-9
P2-10
P2-11
P2-12
P2-13
P2-14
P2-15
P2-16
P2-17
P2-18
P2-19
P2-20
P2-21
P2-22
P2-23
PLT CANBUS A1 SHLD-PLT EMR
SWITCH
TX1-429-A(AIC1)
TX1-429-B(AIC1)
TX2-429-A(RESERVED)
TX3-429-A(RESERVED)
TX4-429-A(RESERVED)
RS232 TX-A(N/C)
RS232 TX-B(N/C)
RX1-429-A/TX1-429-A(AIC2)
RX2-429-A(RESERVED)
RX2 SHLD(RESERVED)
RX3-429-A(RESERVED)
RX3 SHLD(RESERVED)
N/C
N/C
N/C
PLT AMU MIC IN HI
PLT AMU HDPH OUT HI
PLT AMU HDPH SHLD
CPLT CANBUS B1 HI
CPLT CANBUS A2 HI
N/C
N/C
1
P2-24
P2-25
P2-26
P2-27
P2-28
P2-29
P2-30
P2-31
P2-32
P2-33
P2-34
P2-35
P2-36
P2-37
P2-38
P2-39
P2-40
CPLT AMU HDPH SHLD
CPLT AMU HDPH OUT HI
CPLT AMU MIC IN HI
PLT CANBUS B2 HI
PLT CANBUS A1 HI
PLT CANBUS B2 LO
TX1 SHLD(AIC1)
TX2-429-B(RESERVED)
TX3-429-B(RESERVED)
TX4-429-B(RESERVED)
RS232 GND
N/C
RX1-429-B/TX1-429-B(AIC2)
1
RX2-429-B(RESERVED)
RX3-429-B(RESERVED)
CHASSIS GND
N/C
Note 1: TX1-429 and RX1-429 are internally tied together.
P2-41 N/C
P2-42 PLT AMU HDPH OUT LO
P2-43 PLT AMU MIC IN LO
P2-44 CPLT CANBUS A2 LO
P2-45 CPLT CANBUS B1 LO
P2-46 N/C
P2-47 N/C
P2-48 CPLT AMU MIC IN LO
P2-49 CPLT AMU HDPH OUT LO
P2-50 PLT CANBUS A1 LO
P2-51 PLT CANBUS B2 SHLD-PLT EMR PTT
BYPASS
P2-52 TX2 SHLD(RESERVED)
P2-53 TX3 SHLD(RESERVED)
P2-54 TX4 SHLD(RESERVED)
P2-55 N/C
P2-56 N/C
P2-57 RX1 SHLD(AIC2)
P2-58 RX4-429-A(RESERVED)
P2-59 RX4 SHLD(RESERVED)
P2-60 N/C
P2-61 PLT AMU MIC SHLD
P2-62 CPLT CANBUS B1 SHLD-CPLT EMR
SWITCH
P2-63 CPLT CANBUS A2 SHLD-CPLT EMR PTT
BYPASS
P2-64 N/C
P2-65 N/C
P2-66 CPLT AMU MIC SHLD
P2-67 N/C
P2-68 GND
P2-69 RS232 RX-B(N/C)
P2-70 RS232 RX-A(N/C)
P2-71 RX4-429-B(RESERVED)
P2-72 USB2 SHLD(RESERVED)
P2-73 USB2 D-(RESERVED)
P2-74 USB2 D+(RESERVED)
P2-75 USB1 D+(RESERVED)
P2-76 USB1 SHLD(RESERVED)
P2-77 USB2 SEL 5V(RESERVED)
P2-78 USB1 SEL 5V(RESERVED)
P2-79 USB1 D-(RESERVED)
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 49
INSTALLATION AND OPERATION MANUAL
Figure 11. P1 Connector Map for Model 4420-006
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 50
INSTALLATION AND OPERATION MANUAL
Connector P2 CONNECTOR MAP
1
TX1-429-A
(RESERVED)
PLT CANBUS A1 HI
PLT CANBUS A1 SHLD-
PLT EMR SWITCH
PLT CANBUS B2 HI
CPLT AMU MIC IN HI
TX1-429-B
(RESERVED)
CPLT AMU HDPH OUT HI
PLT CANBUS
A1 LO
CPLT AMU HDPH OUT LO
PLT CANBUS B2 LO
TX1 SHLD
(RESERVED)
51
31
TX2-429-B
(RESERVED)
CPLT AMU HDPH SHLD
CPLT AMU MIC IN LO
PLT CANBUS B2 SHLD-
PLT EMR PTT BYPASS
CPLT AMU MIC SHLD
TX2 SHLD
(RESERVED)
TX3 SHLD
(RESERVED)
TX2-429-A
(RESERVED)
TX3-429-B
(RESERVED)
TX3-429-A
(RESERVED)
N/C N/C
N/C
N/C GND
TX4 SHLD
(RESERVED)
TX4-429-B
(RESERVED)
TX4-429-A
(RESERVED)
CPLT CANBUS B1 HI
CPLT CANBUS
A2 LO
USB1 SHLD
(RESERVED)
RS232 RX-B
N/C N/C
N/C
USB2 SEL 5V
(RESERVED)
21
CPLT CANBUS B1 LO
CPLT CANBUS A2 HI
RS232 RX-A
USB1 D+
(RESERVED)
USB1 SEL 5V
CPLT CANBUS A2 SHLD
CPLT EMR PTT BYPASS
USB2 D+
USB1 D-
(RESERVED)
(RESERVED)
(RESERVED)
USB2 SHLD
(RESERVED)
71
RX4-429-B
(RESERVED)
CPLT CANBUS B1 SHLD
CPLT EMR SWITCH
61
USB2 D-
(RESERVED)
RX1 SHLD
(RESERVED)
N/C
N/C
RS232 GND
N/C
RX1-429-B
(RESERVED)
RS232 TX-A
RS232 TX-B
RX1-429-A
(RESERVED)
PLT AMU MIC SHLD
PLT AMU MIC IN LO
PLT AMU HDPH SHLD
PLT AMU HDPH OUT LO
41
PLT AMU HDPH OUT HI
N/C
N/C
N/C
RX4-429-A
(RESERVED)
RX4 SHLD
(RESERVED)
RX2-429-B
(RESERVED)
11
CHASSIS GND
RX3-429-B
(RESERVED)
RX2 SHLD
(RESERVED)
RX2-429-A
(RESERVED)
PLT AMU MIC IN HI
RX3-429-A
(RESERVED)
N/C
RX3 SHLD
(RESERVED)
N/C
N/C
CONNECTOR P2
FILE: 4420-000 405-0110.DOC DWG NO. 4420-000\405-0 REV 1.10
4420-804-0 Rev AA
Figure 12. P2 Connector Map for Model 4420-006
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 51
4420-804-0 Rev AA
P1: AMPHENOL
P/N 91-569769-35P
128 PIN CONNECTOR
MATES WITH J1:
TVS06RF-25-35S
GLENAIR BACKSHELL
M85049/38S25N
MIL-DTL-38999 SERIES III
ESD CAUTION DECAL
P2: AMPHENOL
P/N 91-569767-35P
79 PIN CONNECTOR
MATES WITH J2:
TVS06RF-21-35S
GLENAIR BACKSHELL
M85049/38S21N
MIL-DTL-38999 SERIES III
1.130 [28.70]
TAMPER-PROOF LABEL
CG
11.242 [285.55]
10.125 [257.18]
5.812 [147.62]
2.904 [73.76]
CG
6.10 [154.94]
INSTALLATION AND OPERATION MANUAL
1.13 [28.70]
2.260 [57.40]
7.640 [194.06]
3.90 [99.06]
CONFIDENTIAL AND PROPRIETARY TO COBHAM
Figure 13 Installation, Model 4420-000, 4420-006 AMU
(Sheet 1)
Page 52
4420-804-0 Rev AA
INSTALLATION AND OPERATION MANUAL
13.536 [343.81]
TAMPER-PROOF
LABEL (REF)
UID
LABEL
BAR CODE
TSO
LABEL
12.734 [323.44]
13.382 [339.90]
CONFIDENTIAL AND PROPRIETARY TO COBHAM
1.890 [48.01]
1.642 [41.71]
ESD CAUTION
DECAL (REF)
(Sheet 2)
Page 53
4420-804-0 Rev AA
P1: AMPHENOL
P/N 91-569769-35P
128 PIN CONNECTOR
MATES WITH J1:
TVS06RF-25-35S
GLENAIR BACKSHELL
M85049/38S25N
MIL-DTL-38999 SERIES III
ESD CAUTION DECAL
P2: AMPHENOL
P/N 91-569767-35P
79 PIN CONNECTOR
MATES WITH J2:
TVS06RF-21-35S
GLENAIR BACKSHELL
M85049/38S21N
MIL-DTL-38999 SERIES III
1.130 [28.70]
TAMPER-PROOF LABEL
CG
11.242 [285.55]
10.125 [257.18]
5.812 [147.62]
2.904 [73.76]
CG
6.10 [154.94]
INSTALLATION AND OPERATION MANUAL
1.13 [28.70]
2.260 [57.40]
3.90 [99.06]
7.640 [194.06]
CONFIDENTIAL AND PROPRIETARY TO COBHAM
FILE: 4420-003_922-0100.DWG DWG: 4420-003_922-0 REV 1.00 SH1
Figure 14. Installation, Model 4420-003 AMU
(Sheet 1)
Page 54
4420-804-0 Rev AA
INSTALLATION AND OPERATION MANUAL
13.536 [343.81]
TAMPER-PROOF
LABEL (REF)
UID
LABEL
BAR CODE
TSO
LABEL
1.890 [48.01]
1.642 [41.71]
ESD CAUTION
DECAL (REF)
12.734 [323.44]
13.382 [339.90]
CONFIDENTIAL AND PROPRIETARY TO COBHAM
FILE: 4420-003_922-0100.DWG DWG: 4420-003_922-0 REV 1.00 SH2
Figure 14. Installation, Model 4420-003 AMU
(Sheet 2)
Page 55
INSTALLATION AND OPERATION MANUAL
3.0 CALIBRATION AND TEST PROCEDURES
Calibration procedures are included in Document No. 4420 614-0, Acceptance Test Procedure.
No scheduled or routine maintenance is required for the Model 4420-[ ]. Assembly drawings, parts lists, and schematics for each detail part number are included in Repair Manual Document
No. 4420 824-0. Repair of the Model 4420-[ ] is available by contacting the manufacturer.
4.0 DETAIL PART NUMBER PROCEDURES AND LEVELS
The detail part numbers associated with the Model 4420-[ ] Audio Management Unit may define different level adjustments, different internal mode configurations, or customized warnings.
Table 11 Detail Part Numbers for Model 4420-[ ] describes those differences.
NOTE: A Model 4420-[ ] with an associated detail part number is designated as a Model
4420-XXX, where XXX is the applicable detail part number.
Table 11 Detail Part Numbers for Model 4420-[ ]
Detail Part No. Description of Detail
000
003
006
Base Model. SVC1 and SVC2 microphone and headset interfaces set for compatibility with high impedance headsets with 150 ohm biased, amplified dynamic microphones and 150 ohm headphones. SVC3 and
SVC4 microphone and headset set for compatibility with low impedance headsets with 8 non-amplified carbon microphones and 8 ohm headphones. Customized aural warnings are installed.
See Table 12 4420-000 Warning Descriptions.
Same as Base Model, with the following exceptions:
ARINC 429 BIT fault reporting is added by the addition of U684 and lightning protection circuitry.
Gains of PLT MIC, CPLT MIC and SVC MICs to INPH output have been changed to make INPH output less susceptible to temperature variation.
Initiated Built In Test functions have been corrected and made to function.
ARINC 429 BIT fault reporting TX1/RX1 and TX3/RX3 channel filtering is added by the addition of filter components.
ARINC 429 BIT fault reporting TX1/RX1 and TX3/RX3 channel loopback is added by the addition of jumpers between TX1-A/B/RX1-A/B and TX3-
A/B/RX3-A/B external connector pins.
Same as Base Model, with the following exceptions:
ARINC 429 BIT fault reporting is added by the addition of U684 and lightning protection circuitry.
Gains of PLT MIC, CPLT MIC and SVC MICs to INPH output have been changed to make INPH output less susceptible to temperature variation.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 56
INSTALLATION AND OPERATION MANUAL
Initiated Built In Test functions have been corrected and made to function.
ARINC 429 BIT fault reporting TX1/RX1 and TX3/RX3 channel filtering is added by the addition of filter components.
ARINC 429 BIT fault reporting TX1/RX1 and TX3/RX3 channel loopback is added by the addition of jumpers between TX1-A/B/RX1-A/B and TX3-
A/B/RX3-A/B external connector pins.
Pilot and Copilot Mic and Headphones impedances are set for 150 ohm
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 57
INSTALLATION AND OPERATION MANUAL
Table 12 4420-000 Warning Descriptions
Name
Overspeed
Characteristics
Repetitive swept frequency tone; increasing from
500 +100Hz to 1,670Hz, about 5 times per second.
Landing Gear Continuous warning tone is 250 +25Hz, on 0.1
Bingo Bingo second, off 0.1 second
“Bingo Bingo” male voice warning, continuous
Altitude
“Altitude” male voice warning, continuous
Over G
MASTER
WARNING/
CAUTION
Repetitive swept frequency tone; 714-769Hz
+25Hz, 150mS rise, 50mS fall.
Swept frequency tone from 0Hz to 1,430 +100Hz, in 0.85 second with an interruption interval of 0.14
+0.05 second.
Discrete #
Discrete 1
Discrete 6
Discrete 5
Discrete 4
Discrete 3
Discrete 2
Table 13 4420-006 Warning Descriptions
Name
Overspeed
Characteristics
Repetitive swept frequency tone; increasing from
500 +100Hz to 1,670Hz, about 5 times per second.
Landing Gear Continuous warning tone is 250 +25Hz, on 0.1
Bingo Bingo second, off 0.1 second
“Bingo Bingo” male voice warning, continuous
Altitude
“Altitude” male voice warning, continuous
Over G
MASTER
WARNING/
CAUTION
Repetitive swept frequency tone; 714-769Hz
+25Hz, 150mS rise, 50mS fall.
Swept frequency tone from 0Hz to 1,430 +100Hz, in 0.85 second with an interruption interval of 0.14
+0.05 second.
IR Missile Warn Continuous burst sawtooth tone, 1000 Hz, on 50 ms, off 50 ms
Missile
Guidance Warn
Continuous burst sawtooth tone, 1000 Hz, on 125 ms, off 125 ms
Target Threat
Warn
Continuous sawtooth tone, 275 Hz, 50% duty cycle
Discrete #
Discrete 1
Discrete 6
Discrete 5
Discrete 4
Discrete 3
Discrete 2
Discrete 7
Discrete 8
Discrete 9
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 58
INSTALLATION AND OPERATION MANUAL
Table 14 Environmental Qualification Form
AUDIO MANAGEMENT UNIT NOMENCLATURE:
TYPE/MODEL/PART NO.: MODEL 4420-[ ] TSO NUMBER: TSO-C139
MANUFACTURERS SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION:
Document No. 4420 804-0, Equipment Manual
MANUFACTURER: NAT SEATTLE, INC.
ADDRESS:
Conditions
TEMPERATURE & ALTITUDE)
TEMPERATURE (
C)
LOW OPERATING
LOW SHORT TIME
HIGH OPERATING
HIGH SHORT TIME
LOW GROUND SURVIVAL
HIGH GROUND SURVIVAL
LOSS OF COOLING
VIBRATION
EXPLOSION
WATERPROOFNESS
FLUIDS SUSCEPTIBILITY
SAND & DUST
FUNGUS
SALT SPRAY
MAGNETIC EFFECT
22125 17
TH
AVE SE, SUITE 107, BOTHELL, WA 98021
ALTITUDE (FEET-THOUSANDS]
DECOMPRESSION
OVERPRESSURE
TEMPERATURE VARIATION
HUMIDITY
SHOCK (operation and crash safety)
Section
4.0
4.5.2
4.5.3
4.5.5
4.6.1
4.6.2
4.6.3
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
13.0
14.0
15.0
X
F2 Equipment meets the Category requirements with the following:
-35°C
-40°C
+55° C
+75° C
-55°C
+85° C
Testing Not Required
F2 Equipment meets the Category requirements at
31000.
A2 Equipment meets the Category requirements.
A2 Equipment meets the Category requirements.
B Equipment meets the Category requirements.
B
B
[(RBB1)
(U2FF1)
(SCM)]
X
Equipment meets the Category requirements.
Equipment meets the Category requirements.
Equipment meets the Category requirements as follows: Random Vibration for 30 min. performance level per DO-160E Figure 8-1 Curve
B followed by 3 hours endurance level per DO-
160E Figure 8-4 Curve B1 (RBB1). In addition
Random Vibration at 30 min performance level per DO-160E Figure 8-7 Curve F followed by 3 hours endurance level per DO-160E Figure 8-7
Curve F1 followed by 30 min performance level per DO-160E Figure 8-7 Curve F (U2FF1). In addition Standard Random Vibration for 1 hour performance level per DO-160E Figure 8-1 Curve
C and Standard Sinusoidal Vibration for 1 hour per DO-160E Figure 8-3 Curve M (SCM). Repeat this vibration testing for all 3 axes.
Testing Not Required
W
X
D
F
S
Z
Description of Tests Conducted
Equipment meets the Category requirements.
Testing Not Required
Equipment meets the Category requirements.
Equipment meets the Category requirements.
Equipment meets the Category requirements.
Equipment meets the Category requirements.
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 59
INSTALLATION AND OPERATION MANUAL
Table 14 Environmental Qualification Form (continued)
TYPE/MODEL/PART NO: Model 4420-[ ]
Conditions Section Description of Tests Conducted
POWER INPUT
VOLTAGE SPIKE CONDUCTED
16.0
17.0
18.0
BZ
A
Z
Equipment meets the Category requirements as follows: Whichever (B or Z) is MOST severe on a case by case basis; Category B for Momentary
Power Interruptions, Low Voltage for engine starting undervoltage shall be 10VDC
Equipment meets the Category requirements.
Equipment meets the Category requirements.
AUDIO FREQUENCY CONDUCTED
SUSCEPTIBILITY
INDUCED SIGNAL SUSCEPTIBILITY
RADIO FREQUENCY
SUSCEPTIBILITY
RADIO FREQUENCY EMISSION
LIGHTNING INDUCED TRANSIENT
SUSCEPTIBILITY
19.0
20.0
21.0
22.0
AC Equipment meets the Category requirements.
RR Equipment meets the Category requirements.
M
[A3
(G3)
(J3)3]
Equipment meets the Category requirements.
LIGHTNING DIRECT EFFECTS
ICING
ELECTROSTATIC DISCHARGE
FIRE FLAMMIBILITY
23.0
24.0
25.0
26.0
X
X
A
X
Equipment meets the Category requirements as follows: Pin Injection Waveform Set A, level 3.
Cable Bundle Waveform Set G, Single and
Multiple Stroke level 3 and Multiple Burst level 3 for all unshielded cables and Cable Bundle
Waveform Set J, Single and Multiple Stroke level 3 and Multiple Burst level 3 for all shielded cables
Testing Not Required
Testing Not Required
Equipment meets the Category requirements.
Testing Not Required
4420-804-0 Rev AA
CONFIDENTIAL AND PROPRIETARY TO COBHAM Page 60
Download
Public link updated
The public link to your chat has been updated. You may view and manage your chat links after registration here.
Document public link
Advertisement
Key features
Remotely controlled
Digital signal commands
Control audio volume for 15 receiver inputs
Interphone audio control
Auxiliary inputs
VOX & noise reduction
Dual redundant ACB's
Frequently asked questions
It is controlled by a pair of 5520-[ ] Audio Control Panels (ACP).
It can switch and control the volume of up to 15 receiver inputs, as well as handle interphone audio and provide auxiliary inputs.
The VOX feature, along with noise reduction, allows for interphone operation without transmitting ambient cockpit noise and reduces unwanted noise while the pilot is talking.
If one ACB fails, the Model 4420-[ ] automatically switches to the functional ACB, ensuring continuous operation without disruption to the user.
It needs to be mounted on a metal surface, and it's crucial to ground the mounting rack to the metal aircraft ground structure. The AMU enclosure should be bonded to the aircraft ground structure.
