Northern Airborne Technology 806 User Manual
Installation and Operation Manual
806 and 807
Audio Selector Panels
806
807
SM806
ISSUE 4.01
Northern Airborne Technology Ltd.
1925 Kirschner Road
Kelowna, BC, Canada.
V1Y 4N7
Telephone (250) 763-2232
Facsimile (250) 762-3374
Issued on the authority of Northern Airborne Technology Ltd.
Copyright 2008
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
Table of Contents
Section Title Page
1. Description
1.1 Introduction 1-1
1.2 Product Description 1-1
1.3 Design Features 1-1
1.4 Specifications 1-1
1.4.1 Electrical Specifications 1-1
1.4.2 Physical Specifications 1-4
1.4.3 Environmental Specifications 1-4
1.4.4 Product Approval 1-4
2. Installation
2.1 Introduction 2-1
2.2 Unpacking and Inspection 2-1
2.2.1 Warranty 2-1
2.3 Continued Airworthiness 2-1
2.4 Installation Procedures 2-1
2.4.1 Warnings 2-1
2.4.2 Cautions 2-2
2.4.3 Cabling and Wiring 2-2
2.4.4 Mounting 2-2
2.4.5 Post-Installation Checks 2-3
2.5 Adjustments and Connections 2-3
2.6 Accessories Required But Not Supplied 2-4
2.7 Installation Drawings 2-4
3. Operation
3.1 Introduction 3-1
3.2 General Information 3-1
3.3 Controls and Indicators 3-1
3.3.1 806 and 807 Control Functions 3-2
3.3.2 Row 1 Controls 3-2
3.3.3 Row 2 Controls 3-3
3.3.4 Row 3 Controls 3-3
3.3.5 Row 4 Controls 3-4
3.3.6 Row 5 Controls 3-5
3.3.7 Row 6 Controls 3-6
Installation and Operation Manual Page iii
ENG-FORM: 820-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the 806
and 807 Audio Selector Panels. All derivative product information shall be contained in the applicable
manual supplement, which may be obtained from NAT as required.
Review all notes, warnings and cautions.
1.2 Product Description
The 806 and 807 Audio Selector Panels are each designed to control a separate 700 serie s Digital Audio
Control Amplifier. They provide microphone audio switching and keying operations for radio transmitters,
receivers and passenger address (PA) amplifier control.
1.3 Design Features
The 806 and 807 Audio Selector Panels continuously read the status of their own front panel switches
and potentiometers and compile this information into the form of a digital signal, which is sent to the
appropriate Model 700 in RS-422 serial format. The Model 700 receives, demultiplexes and converts this
digital signal into useful audio control information.
The 806 and 807 Audio Selector Panels are capable of digitally controlling all Model 700 amplifier
functions. These include the receiver input switches and individual volume controls, the sidetone input
switches and sidetone volume control, the microphone input switch, the interphone switches and volume
control, the cockpit speaker switch and volume control, the headphone volume control and the NAV/ADF
Voice/Ident filter switching functions.
The Audio Selector Panels have several dedicated hardwired switches. Both the 806 and 807 Audio
Selector Panels have MIC, HF, AUTO-COMM, SPKR, BOTH/VOICE/IDENT, GYRO MODE SEL and
SLEW switches. In addition, the 806 has AUDIO, MKR, ADC, CDU REV, AHRS and TDR switches.
1.4 Specifications
1.4.1 Electrical Specifications
Operating Voltage 27.5 Vdc nominal
(normal) 22.0 Vdc minimum
30.3 Vdc maximum
18.0 Vdc emergency
Operating Voltage 27.5 Vdc nominal
(abnormal) 20.5 Vdc minimum
32.2 Vdc maximum
Input Current 150 mA maximum
Lighting Voltage 115Vac, 400Hz, 20 mA rms max.
Section 1 Rev: 1.00 Issue 4 Page 1-1
ENG-FORM: 800-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
Input Signals (806 and 807)
NAME TYPE LABEL SPECIFICATION
Speaker input Audio SPKR INPUT HI Passive feed through
Normal Microphone Audio NORMAL MIC HI
Oxygen Microphone Audio OXY MIC HI
Hand Microphone Audio HAND MIC HI Impedance: External
Aural Warning Bypass Audio AW BYPASS IN
Oxygen Microphone
Interconnect
(Yoke) Push to Talk Key Control PTT KEY SWITCH Active Low
Normal / Oxygen
Microphone Key
Hand Microphone Key Control HAND MIC PTT Active Low
Vox Threshold Control VOX THLD 10 mA maximum
Interphones Listen Control INPH LISTEN Active Low
Test Mode Jumper In Control
Input Signals (807 only)
NAME TYPE LABEL SPECIFICATION
Emergency Switch In Control EMER SWITCH IN 28 Vdc, 100 mA maximum
Control OXY MIC MODE
INTERCONNECT
Control NORM/OXY
MIC TIP PTT
TEST MODE
JUMPER IN
Impedance: 130 Ω -65/+390 Ω
Circuitry: Single ended
Mic bias: 26 ±5mA dc
Impedance: 130 Ω -65/+390 Ω
Circuitry: Single ended
Mic bias: 26 ±5mA dc
Circuitry: Single ended
Mic bias: External
1.5 Vrms when AW BYPASS OUT
terminated into 600 Ω
Active Low
10 mA maximum
10 mA maximum
Active Low
10 mA maximum
10 mA maximum
10 mA maximum
10 mA maximum
Section 1 Rev: 1.00 Issue 4 Page 1-2
ENG-FORM: 800-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
Output Signals (806 and 807)
NAME TYPE LABEL SPECIFICATION
Speaker Output Audio SPKR OUTPUT HI Passive feed through
Com 1 Microphone Audio COM 1 MIC HI Passive feed through
Com 2 Microphone Audio COM 2 MIC HI Passive feed through
HF Microphone Audio HF MIC HI Passive feed through
PA Microphone Audio PA MIC HI Passive feed through
Interphone Microphone
Out
Aural Warning Bypass Audio AW BYPASS OUT
Normal Switch Out Control NORM SWITCH OUT Optional
Interphone Switch Control INPH SWITCH 10 mA maximum
PA Volume Control PA VOL Optional
Com 1 Key Control COMM 1 KEY 10 mA maximum
Com 2 Key Control COMM 2 KEY 10 mA maximum
HF Key Control HF KEY 10 mA maximum
PA Key Control PA KEY 10 mA maximum
Test Mode Jumper Out Control
Output Signals (806 only)
NAME TYPE LABEL SPECIFICATION
Audio Alternate Switch Control
Emergency Switch Out Control EMER SWITCH OUT Passive feed through
Bi-directional Signals
NAME TYPE LABEL SPECIFICATION
Multiplexed Data Control MUX DATA OUT RS422 differential data transmission
Audio INPH MIC OUT Passive feed through
1.5 Vrms when terminated into 600 Ω
Active Low
10 mA maximum
10 mA maximum
TEST MODE
10 mA maximum
JUMPER OUT
AUDIO ALTN
28 Vdc, 100 mA maximum
SWITCH
Section 1 Rev: 1.00 Issue 4 Page 1-3
ENG-FORM: 800-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
1.4.2 Physical Specifications
Model 806-000 Model 807-000
Height 8.07" (205.0 mm) max. 8.08" (205.2 mm) max.
Width 5.32" (135.1 mm) max. 4.30" (134.6 mm) max.
4.08" (103.6 mm) behind panel 4.58" (116.3 mm) behind panel Depth
5.47" (138.9 mm) max. 6.97" (151.6 mm) max.
Weight 2.81 lbs (1.28 kg) max. 2.35 lbs (1.07 kg) max.
Faceplate Grey, electro-luminescent
Mounting
Four 6-32, 513-4233
captive screws.
Material/Finish Aluminum / Chromate Conversion
Connector J1 61-Pin Circular, Male, Crimp 61-Pin Circular, Male, Crimp
Connector J2
61-Pin Circular, Male, Crimp,
Alt Keying
Three 6-32, 513-4233 captive
screws
61-Pin Circular, Male, Crimp
1.4.3 Environmental Specifications
Temperature -55 to +70°C (operating)
-55 to +85°C (survival)
Altitude 70,000 feet
Humidity 95%, 48 hours
Shock 12g (any axis)
Vibration Conforms to DO -160B category ‘P’
Qualification of the 806 and 807 Audio Selector Panels was completed in accordance with DO-160C
Env. Cat. [A2F2]–BA[BM]XXXXXXZ[BZ]AZZUZLXX. Tested to DO-160C pre-change 1, 2 and 3.
Note: Refer to Environmental Qualification Form located in Section 2 of this Manual for complete details
of the environmental categories.
1.4.4 Product Approval
FAA: TSO-C50c (RTCA/DO-170, RTCA/DO-160C, RTCA/DO-178B Level C)
Section 1 ends
Section 1 Rev: 1.00 Issue 4 Page 1-4
ENG-FORM: 800-0113.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
Section 2 Installation
2.1 Introduction
Information in this section consists of unpacking and inspection procedures, installation procedure s, po stinstallation checks and installation drawings for the 806 and 807 Audio Selector Panels.
Review all notes, warnings and cautions.
2.2 Unpacking and Inspection
Unpack the equipment carefully and locate the warranty card. Inspect the unit visually for damage due to
shipping and report all such claims immediately to the carrier involved. Check that all items listed below
are present before proceeding and report any shortage immediately to your supplier:
- Warranty Card
- Operators Manual
- Certificate of Conformity or Release Certification
2.2.1 Warranty
All Northern Airborne Technology Ltd. products are warranted for 2 years from date of installation by an
authorized NAT dealer, to be free of defects in workmanship or performance. This warranty covers all
materials and labour, but is exclusive of any transport to deliver the defective unit to and from NAT or its
designated warranty repair center, or any labour to remove or re-install the defective unit in the aircraft.
Contact NAT for any questions regarding this warranty, its applicability to your units and/or for return
authorization. NAT is the final arbitrator concerning warranty administration. Units which have been
physically damaged, burned, immersed in water or otherwise abused beyond the scope of normal use will
not be considered for warranty. WARRANTY IS VOID UNLESS THE PRODUCT IS INSTALLED BY AN
AUTHORIZED NAT DEALER. Product for which a warranty card is not returned shall be warranted from
date of manufacture.
2.3 Continued Airworthiness
Maintenance of the 806 and 807 Audio Selector Panels is ‘on condition’ only. Periodic maintenance of
this product is not required.
2.4 Installation Procedures
2.4.1 Warnings
WARNING:
High volume settings can cause hearing damage.
Set the headset volume control to the minimum volume setting prior to
conducting tests, and slowly increase the headset volume to a
comfortable listening level.
Section 2 Rev: 1.00 Issue 4 Page 2-1
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CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
2.4.2 Cautions
CAUTION:
In all installations, use shielded cable exactly as shown and ground as
indicated. Significant ground loop and noise problems may result from not
following these guidelines. Check that the chassis is grounded to provide
proper shield terminations.
Check that the microphone and headphone jacks are isolated from the
airframe ground. Use caution when routing microphone wiring, as it carries
low-level signals prone to coupling from other sources.
Do not take a ground from the instrument panel or similar location that shares
a ground return with a turn and bank, horizon or other motor driven
instrument. This may cause the unit to pick up the sound of the motor as
ground loop interference.
2.4.3 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 solde r sleeve s (fo r shield
terminations) to make the most compact and easily terminated interconnect. Follow the connector map in
Section 2.7 as required.
Allow 3" from the end of the shielded wiring to the shield termination to allow the connector hood to be
easily installed. Reference the interconnect drawing in Section 2.7 for shield termination details. Aircraft
harnessing shall permit the unit to be lowered from the panel for easy access to all side adjustments. Do
NOT mount the unit until all adjustments have been performed.
Maintain wire segregation and route wiring in accordance with the original aircraft manufacturers
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. Reference 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. Power to this unit must
be supplied from a separate circuit breaker or fuse (fast blow), and not attached to any other circuit
breaker without additional protection. Verify that the selected circuit breaker size and wire gauge are
adequate for the installation using the techniques specified in AC43.13-1B Change 1, Paragraphs 11-47
through 11-51 and 11-66 through 11-69.
2.4.4 Mounting
No shock or vibration isolators are required for mounting. The unit should be mounted to a metal surface
and grounded to the aircraft ground structure. The unit and mounting surface is finished with an
electrically conductive film, which should not be removed for electrical bonding to any metal aircraft
ground structure because the coating prevents corrosion. The 806 is mounted using 4 ca ptive 6-32
screws, and the 807 is mounted using 3 captive 6-32 screws, which are supplied with the unit as part of
the enclosure front panel assembly.
Section 2 Rev: 1.00 Issue 4 Page 2-2
ENG-FORM: 805-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
2.4.5 Post Installation Checks
2.4.5.1 Voltage/Resistance Chec ks
Do not attach the 806/807 until the following conditions are met.
Check the following:
a) Check P1-p for +28 Vdc relative to ground.
b) Check pins P1-CC and P1-DD for 110 Vac 400 Hz.
c) Check pins P1-q, P1-T and P1-H for continuity to ground (less than 0.5 Ω).
d) Check pin P1-BB for continuity to ground (less than 0.5 Ω) when the yoke PTT KEY switch is
activated.
e) Check all shielded cable grounds for continuity to ground (less than 0.5 Ω).
f) Check all speaker and mic inputs and outputs for correct Hi/Lo orientation.
2.4.5.2 Power On Checks
Power up the aircraft’s systems and confirm normal operation of all functions of the 806/807. Refer to
Section 3 (Operation) for specific operational details.
a) Begin with only the Pilot's headset installed, no hand mic. Confirm correct radio operation,
both receive and transmit. Check yoke (or cyclic) switch action. Check radio audio inputs a nd
selection of same.
b) Plug in the Co-pilot's headset. Check for correct ICS and SPLIT transmit operation. Check
that the Co-pilot loses transmit capability during PLT ISO. Check yoke switch functions.
c) Plug in the hand mic, if installed, and test for correct operation in all modes.
d) Plug in any remaining headsets, and check for correct ICS operation.
e) To verify proper operation, all functions and levels shall be checked in-flight.
f) Check that preset adjustments are completed before aircraft departure.
Upon satisfactory completion of all performance checks, make all required log book entries, electrical
load, weight and balance amendments and other documentation as required by your local regulatory
agency before releasing the aircraft for service.
2.5 Adjustments and Connections
The OXY MODE INPH VOL can be adjusted by rotating the potentiometer at the rear of the unit, which
can be accessed through an aperture in the chassis. The volume is increased by rotating the
potentiometer clockwise and decreased by rotating it counter clockwise.
Section 2 Rev: 1.00 Issue 4 Page 2-3
ENG-FORM: 805-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
806 and 807 Audio Selector Panels
SM806 Installation and Operation Manual
2.6 Accessories Required But Not Supplied
The aircraft connectors required to complete the installation are:
Item Ident Description Part No.
External Connector 1 J1 61 Pin Circular, Female, Crimp D38999/26WJ61SN
Models 806 and 807
External Connector 2 J2 Pin Circular, Female, Crimp, Alt Keying D38999/26WJ61SC
Models 806 only
Backshell, Strain Relief N/A N/A M85049/38-25W
Models 806 and 807
2.7 Installation Drawings
DOCUMENT REV. DESCRIPTION TYPE SERIAL NO.
806-000
806\000\403-0 1.00 Audio Selector Panel Interconnect All
806\000\403-1 1.00 Audio Selector Panel Interconnect All
806\000\403-2 1.00 Audio Selector Panel Interconnect All
806\000\403-3 1.00 Audio Selector Panel Interconnect All
806\000\405-0 1.00 Audio Selector Panel Connector Map All
806\000\952-0 1.01 Audio Selector Panel Custom Mechanical Installation Up to 1126
806\000\952-0 1.02 Audio Selector Panel Custom Mechanical Installation 1127 and up
806\521-0 1.00 Audio Selector Panel Environmental Qualification Form All
807-000
807\000\403-0 1.00 Audio Selector Panel Interconnect All
807\000\403-1 1.00 Audio Selector Panel Interconnect All
807\000\403-2 1.00 Audio Selector Panel Interconnect All
807\000\405-0 1.00 Audio Selector Panel Connector Map All
807\000\952-0 1.01 Audio Selector Panel Custom Mechanical Installation All
807\521-0 1.01 Audio Selector Panel Environmental Qualification Form All
Section 2 ends following the above documents
Section 2 Rev: 1.00 Issue 4 Page 2-4
ENG-FORM: 805-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
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