SPECIAL NOTICE
This product is now licensed to Anodyne Electronics Manufacturing (AEM) from Northern
Airborne Technology (NAT). AEM is responsible for all matters related to this product, including
sales, support and repair services.
Please note the transition to convert product manuals and supporting documentation is an
ongoing process and is being addressed on an ‘as needed’ basis.
All references to NAT product part numbers (and associated images) are equivalent to AEM
product part numbers.
Contact info:
Anodyne Electronics Manufacturing Corp.
#15-1925 Kirschner Road
Kelowna B.C. Canada
V1Y 4N7
Email: support@aem-corp.com
Toll Free: 1-888-763-1088
Phone: 1-250-763-1088
Fax: 1-250-763-1089
www.aem-corp.com
SM46
N335 Series
Audio Controllers
INSTALLATION AND OPERATION MANUAL
Rev: 2.00 May 18, 2012
Anodyne Electronics Manufacturing Corp.
15-1925 Kirschner Road
Kelowna, BC, Canada.
V1Y 4N7
Telephone (250) 763-1088
Facsimile (250) 763-1089
Website: www.aem-corp.com
© 2012 Anodyne Electronics Manufacturing Corp. (AEM),
All Rights Reserved
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
SM46 Installation and Operation Manual
COPYRIGHT STATEMENT
© 2012 Anodyne Electronics Manufacturing Corp. (AEM), All Rights Reserved
This publication is the property of AEM and is protected by Canadian copyright laws. No part of
this
document may be reproduced or transmitted in any form or by any means including electronic,
mechanical, photocopying, recording, or otherwise, without the prior written permission of AEM.
Installation and Operation Manual Page ii
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
Prepared By:
Checked By:
Approved By:
ISSUE/REVISION RECORD
Manual Issue
Number
Section
Revision Number
Revision Description
Issue Date
4.21
Section 1 Rev: 1.00
Section 2 Rev: 1.00
Section 3 Rev: 1.00
New Format
Apr 14, 2009
Section
Revision Number
Revision Description
Date
May 18, 2012
SM46 Installation and Operation Manual
Tony Pearson
Designer
May 18, 2012
Loen Clement
Designer
Jun 26/12
Tom Betzelt
Product Support
Manager
June 26, 2012
The status of this installation and operation manual is controlled by the revision shown on the title page.
The status of each section is controlled by revision shown in the footer of each page. All revisions
affecting sections of this manual have been incorporated.
AEM MANUAL REVISIONS
All Rev 2.00 Updated template
Installation and Operation Manual Page iii
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
SM46 Installation and Operation Manual
Table of Contents
Section Title Page
1.0 Description
1.1 Introduction 1-1
1.2 Product Description 1-1
1.3 Design Features 1-1
1.4 Specifications 1-2
1.4.1 Electrical Specifications 1-2
1.4.2 Physical Specif ic ati ons 1-5
1.4.3 Environmental Specificatio ns 1-6
1.4.4 Product Approval 1-6
1.5 Unit Nomenclature 1-6
2.0 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 2-2
2.4.2 Cautions 2-2
2.4.3 Cabling and Wiring 2-3
2.4.4 Tie Lines 2-3
2.4.5 Mechanical Mounting 2-3
2.4.6 Post Installation Checks 2-4
2.5 Adjustments and Connections 2-5
2.5.1 Left side Adjustments 2-5
2.5.2 Right Side Adjustments 2-5
2.5.3 Adjustment Options 2-5
2.6 Accessories Required But Not Supplied 2-6
2.7 Installation Drawings 2-6
3.0 Operation
3.1 Introduction 3-1
3.2 General Information 3-1
3.3 Controls and Indicators 3-1
3.3.1 Receiver Input Controls (N335-001 and -201 only) 3-2
3.3.2 Transceiver Input Controls 3-2
3.3.3 Transmit Selection 3-3
3.3.4 Emergency Switch 3-3
3.3.5 CALL 3-4
3.3.6 Miscellaneous Controls 3-4
Installation and Operation Manual Page iv
ENG-FORM: 820-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
SM46 Installation and Operation Manual
Section 1.0 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for N335001, N335-002, N335-201, and N335-202 Audio Contro llers. All derivative product information shall be
contained in the applicable manual supplement, which may be obtained from AEM as required. Review
all notes, warning and cautions.
1.2 Purpose of Equipment
The N335 audio controllers are compatible with military and civil aviation headsets. The N335 controls the
audio from multiple receivers, and allows transmission of mic audio to a selected transmitter. VOX intercom
operation is al so p roved on a p r opri et ary ti e l ine to mul ti ple un it s. A ful ly redun dan t backup sy ste m is se le ctabl e
from the front pan el, an d a CV R o ut put i s p rovi ded .
1.3 Design Features
The N335 is a Dzus rail mounted audio contro ller with various faceplat e lighting o ptions. T he N335 has a
composite Radio Audio out put to pro vide m onitorin g capab ilities f or additional users. It c an be conf igured
in the field to suit various commercial and m ilitary headsets, and microphone outputs. Receive Audio
inputs and Direct Audio inputs are adjustable to suit installation requirements. Emergency mode
operation provides switchin g to a fully redundant bac k-up system that provides full perf ormance. A front
panel annunciator provides indication that the EMER mode is active.
N335-001 The N225-001 Audio Controller has a NVIS Green ‘A’ lighted front panel. It
provides radio transmit and receive audio select capability for the cockpit position.
It will support four microphone t ypes a standard – dynamic 5-ohm, dynamic 75ohm, dynamic 150-ohm and amplified dynamic 150-o hm types. It provides NAT
ICS tie line capabilit y from 1 to 4 loads. T ransmit capability is provided for t wo
users (user 1 and user 2), and an annunciator on the front panel indicates
transmit status. It provides common intercom functions for up to two headset
stations, and allows for int ercom capability to other audio controllers via an ICS
Tie Line. A CALL annunciator advises the op erator th a t other users in the system
need to communicate, if they are in an ‘isolate’ mode.
N335-002 The N335-002 Audio Controller has an NVIS Green ‘A’ lighted front panel. It
provides radio transmit and receive audio select capability for the Crew position.
The crew position is restricted in its radio capability to the ‘communication’ radios.
It also provides common intercom functions for up to two hea dset stations, and
allows intercom capabilit y to other audio controllers v ia the IC S Tie Line. A CAL L
switch allows the operator to signal other users in the system that they need to
communicate, if they are in an ‘isolate’ mode.
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N335 Series Audio Controller
N335-201
The N335-201 Audio Controller is identical to the N335- 001, but with ‘deadfront’
CALL, EMEER and TX text annunciators on the front panel. It will support only
two microphone types as stand ard
dynamic 150
ohm. It provides
ICS tie line capability from 2 to 4 loads, with o ne switch
position functioning to e nable Super
ICS tie line operation, which m aintains
the rated output level independent of the number of units connected to the tie
line. It may be confi gured to provide auto emergency power mode switchover,
ICS tie line muting during transmit, and pilot over copilot transmit priority.
N335-202
The N335-202 Audio Controller is identical to the N335- 002, but with ‘deadfront’
text annunciators on the front panel. I t will su pport o nly t wo m icrophon e t ypes as
standard
ICS
tie line capabilit y from 2 to 4 loads, with one s witch po sition f unctionin g to enab le
Super
ICS tie line operation, which maintains the rated output level
independent of the number of units connected to the tie line. It may be
configured to provide auto emergency power mode switchover, ICS tie line
muting during transmit, and pilot over co-pilot transmit priority.
SM46 Installation and Operation Manual
NAT
– dynamic 5-ohm and amplified dynamic 150 ohm. It provides NAT
NAT
1.4 Specifications
1.4.1 Electrical Specifications
– d ynamic 5 ohm and amplified -
NAT
Power Supply: Multiple switchers and linear regulators with reverse and
over voltage protection.
Normal Operating Conditions:
Nominal Operating Voltage: 27.5 Vdc
Maximum Operating Voltage: 30.3 Vdc
Minimum Operating Voltage: 24.8 Vdc
Emergency Operating Voltage: 10.0 Vdc
Other:
Lighting:
N335-001 400 mA @ 27.5 Vdc max.
N335-002 300 mA @ 27.5 Vdc max
N335-201 550 mA @ 27.5 Vdc max
N335-202 425 mA @ 27.5 Vdc max
Input current:
N335-001/002 500 mA @ 27.5 Vdc max
N335-201/202 750 mA @ 27.5 Vdc max
Input Signals:
Quantity: 15 Receive channels (N335-001 and -201)
8 Receive channels (N335-002 and -202)
2 Mic channels
6 Direct channels
1 Call annunciator (N335-001 and -201)
2 transmit PTT key inputs
2 ICS PTT key inputs
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N335 Series Audio Controller
SM46 Installation and Operation Manual
Audio level: 1 – 10 Vrms for receiver inputs
(Internally selectable gain switches)
1 – 10 Vrms for direct inputs
(Internally selectable gain switches)
0.25 Vrms for Amplified 150 : mic input
1.1 mVrms for Dynamic 150 : mic input
(N335-001 and -002 only)
0.850 mVrms for Dynamic 75 : mic input
(N335-001 and -002 only)
0.250 mVrms for Dynamic 5 : mic input
Transmit PTT (-00x) <10 mA input current, active low (3 Vdc max.)
(-20x) <75 mA input current, active low (3 Vdc max.)
ICS PTT (-00x) <25 mA input current, active low (3 Vdc max.)
(-20x) <25 mA input current, active low (3 Vdc max.)
CALL annunciator (-001 only) <10 mA input current, active low (3 Vdc max.)
CALL annunciator (-201 only) <50 mA input current, active low (3 Vdc max.)
Impedance: 1 k:r10% for Receive and Direct inputs
150 :r10% for Amplified-dynamic 150 : mic input
150 :r10% for Dynamic 150 : mic input
(N335-001 and -002 only)
75 :r10% for Dynamic 75 : mic input
(N335-001 and -002 only)
5:r2 : for Dynamic 5 : mic input
(N335-001 and -002 only)
5:r2 : for Dynamic 5 : mic input
(N335-001 and -002 only)
Circuitry Type: All audio inputs are balanced except for the 150 :
amplified dynamic mic input
Coupling: < -60 dB input to input crosstalk
Output Signals:
Quantity: 2 Phones outputs
8 Transmitter mic outputs (N335-001 and -201 on l y)
7 Transmitter mic outputs (N335-001 and -201 only)
8 Transmitter keyline outputs(N335-001 and -201 only)
7 Transmitter keyline outputs(N335-001 and -201 only)
1 CVR output
1 Composite Receive Audio output
1 CALL switch output (N335-002 and -202 only)
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CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
SM46 Installation and Operation Manual
Rated level: >15.5 Vrms or 400 mW for 600 : phones outpu t
>7.7 Vrms or 400 mW for 150 : phones output
>1.8 Vrms or 400 mW for 8 : phones output
0.1 -1 Vrms for TX Mic output (250 mVrms nominal)
>450 mVrms into 5 k: for CVR output with TX selector
set to IC, or ICS VOL control fully ccw (>70 mVrms into
5 k: for other TX selector / ICS VOL control positions).
> 2.5 Vrms to 600 : Composite Receive output
1 A / 0.5 : max Transmitter keyline output
100 mA max sink current for CALL switch output.
(N335-001 and -002 only)
Rated Impedance: 100 :r10% for TX Mic output
5 k:r10% for CVR output
600 :r10% for Composite Receive output
Circuitry Type: Phones, CVR, Microphone and Composite RX outputs are
transformer outputs
The CVR output is composed of both mic inputs and user #1
phones output
Frequency Response: Headphone Outputs:
Receive inputs <3 dB from 350 Hz to 6000 Hz
Direct inputs <3 dB from 350 Hz to 6000 Hz
Intercom <3 dB from 350 Hz to 3000 Hz
TX Mic output: <3 dB from 350 Hz to 6000 Hz
CVR output:
SuperNAT input: <3 dB from 350 Hz to 3000 Hz
(N335-20x only)
All other inputs <3 dB from 350 to 6000 Hz
Composite RX output: <3 dB from 350 to 6000 Hz
Distortion: < 4% THD @ Rated power output
Audio Noise Level Without Signal: > 60 dB down from rated output
Coupling: < -55 dB input to output crosstalk
Output Regulation at 400% and 75% of rated load:
< 10% distortion / '7 dB max. of rated output power
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N335 Series Audio Controller
N335-001
N335-002
N335-201
N335-202
Height
3.4” (87 mm)
2.63” (67 mm)
3.4” (87 mm)
2.63” (67 mm)
Depth
6.2” (158 mm)
6.2” (158 mm)
6.2” (158 mm)
6.2” (158 mm)
Width
5.0” (127 mm)
5.0” (127 mm)
5.0” (127 mm)
5.0” (127 mm)
Weight
3.5 lbs (1.6 kg)
2.9 lbs (1.3 kg)
3.6 lbs (1.6 kg)
3.0 lbs (1.4 kg)
SM46 Installation and Operation Manual
Bi-directional:
Quantity: 1 ICS tie channel*
Rated level: 340 ±50 mVrms for NAT ICS tie (1 load)
(N335-001 and -002 only)
230 ±40 mVrms for NAT ICS tie (2 loads)
170 ±30 mVrms for NAT ICS tie (3 loads)
135 ±20 mVrms for NAT ICS tie (4 loads)
1.2 ±0.2 Vrms for SuperNAT ICS tie (2-4 loads)
(N335-201 and -202 only)
Rated Impedance: 1.8 k:r10% for NAT ICS tie input
1.8 k:r10% for SuperNAT ICS tie
(N335-201 and -202 only)
Circuitry Type: Balanced
*Default configuration is NAT ICS tie – 4 loads (135 ± 20 mVrms, 1.8 k: ± 10%)
Annunciators:
(N335-00x) CALL LED illuminates when activated (N335-001 only)
EMER LED illuminates when activated
TX LED illuminates when activated
(N335-20x) CALL annunciator text illuminates when activated
EMERG annunciator text illuminates when activated
TX annuci ator text illuminates when activated
Dimming Threshold:
(N335-00x) 5.25 r1.5 Vdc (+28 VDC LIGHTS input)
(N335-20x) 11.5 ±3.25 Vdc (+28 VDC LIGHTS input)
1.4.2 Physical Specifications
Mounting Dzus Rail, four fasteners
(N335-001/-201) 2.25” vertical spacing
(N335-002/-202) 1.5” vertical spacing
Faceplate Laser-engraved acrylic edge lit panel NVIS green ‘A’
(N335-00x) NVIS green ‘A’ Friendly
(N335-20x) NVIS green ‘A’ Compliant
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N335 Series Audio Controller
N335-001
14 user-adjustable receive audio level controls
Support for two users
ICS Call annunciation
Composite receive audio output
High
Complete redundant Emergency circuit
Suitable for High or Low impedance systems
8 TX selections
6 direct inputs
3 ICS modes
CVR output
NVIS friendly with LED annunicators
SM46 Installation and Operation Manual
Finish/Material
(N335-00x) Chassis – 5052-H32 brushed aluminum with conversion
coating finish
Cover is 1100-H19 aluminum with anodized black
lettering
(N335-20x) Chassis and cover are 5052-H32 brushed aluminum with
conversion coating finish
Connectors One male 50-pin filtered D-subminiature connector
utilizing lock posts
One male 50-pin and one male 15-pin filtered
D-subminiature connector utilizing jack posts
Installation kit N335-IKC (D50S50S15SL-IKC)
1.4.3 Environmental Specifications
Operating Tem perature -45q C. to +70q C
Survival Temperatures -55q C. to +85q C
Vibration/Shock DO-160C Cat. N/P
Humidity 95%
Altitude 35,000 feet max
1.4.4 Product Approval
Compliance: N335-00x DO-160C Env. Cat. C4 –BB[NP]XXXXFXABABXVAXXX
N335-20x DO-160C Env. Cat. C4 –BB[NP]XXXXFXABABZVAXXX
1.5 Unit Nomenclature
May 18, 2012 Rev: 2.00 Page 1-6
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CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
Crosstalk filtering
– LIVE/KEYED/VOX
N335 Series Audio Controller
N335-002
7 user-adjustable receive audio level controls
Support for two users
ICS Call annunciation
Composite receive audio output
High Crosstalk filtering
Complete redundant Emergency circuit
Suitable for High or Low impedance systems
7 TX selections
6 direct inputs
3 ICS modes
CVR
NVIS friendly with LED annunciators
N335-201
14 user-adjustable receive audio level controls
Support for two users
ICS Call annunciation
Composite receive audio output
High Crosstalk filtering
Complete redundant Emergency circuit
Suitable for High
8 TX selections
6 direct inputs
3 ICS modes
CVR output
Super
Selectable Auto
Tie
Pilot TX priority
NVIS compliant with dead front text annunciators
N335-202
7 user-adjustable receive audio level controls
Support for two users
ICS Call annunciation
Composite receive audio output
High Crosstalk filtering
Complete redundant Emergency circuit
Suitable for High or Low impedance systems
7 TX selections
6 direct inputs
3 ICS modes
CVR output
Super
Selectable Auto
Tie
Pilot TX priority
NVIS compliant with dead front text annunciators
SM46 Installation and Operation Manual
– LIVE/KEYED/VOX
output
or Low impedance systems
May 18, 2012 Rev: 2.00 Page 1-7
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CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
– LIVE/KEYED/VOX
NAT ICS tie
-Emergency mode
-line muting during TX
– LIVE/KEYED/VOX
NAT ICS tie
-Emergency mode
-line muting during TX
End of Section 1.0
N335 Series Audio Controller
SM46 Installation and Operation Manual
Section 2.0 Installation
2.1 Introduction
Information in this section consists of unpacking and inspection procedures, installation procedures, postinstallation checks and installation drawings for the N335 Series Audio Controller.
Review all notes, warnings and cautions.
2.2 Unpacking and Inspection
Unpack the equipment carefully. Inspect the unit visually for damage due to shipping and report all such
claims immediately to the carrier involved. Note that each unit should have the following:
- N335 Series Audio Controller
- Product Information Card
- Certificate of Conformity or Release certification
Verify that all items are present before proceeding and report any shortage immediately to your supplier.
2.2.1 Warranty
All Anodyne Electronics Manufacturing Corp. (AEM) products are warranted for 2 years. See the website
www.aem-corp.com/warranty for complete details.
2.3 Continued Airworthiness
Maintenance of the N335 Dual User Audio Controllers is ‘on condition’ only. Periodic maintenance of
these products is not required.
2.4 Installation Procedures
Installation Notice
The installation requirements for this product are subject to change without notice. This may affect wiring,
cable and connector configurations. The factory must be consulted for the latest product installation
requirements. All risk associated with this equipment installation contrary to the factory instructions shall
be the responsibility of the end user or installing agency.
May 18, 2012 Rev: 2.00 Page 2-1
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2.4.1 Warnings
CAUTION:
nts from the product while the unit is turned on. This
with transmitter coax lines. Do not
bundle any logic, audio, or DC power lines from this unit with 400 Hz synchro
ring or AC power lines. Do not position this unit next to any device with a
ing magnetic field such as an inverter, motor or blower, or
In all installations, use shielded cable e xactly a s shown,
.
Significant problems may result from not following these guidelines.
All audio installations can be seriously degraded by incorrect wiring and shielding, and
may result in abnormal cross
ally careful
with all microphone wiring and tie line wiring, as these lines carry the lowest level
signals in the aircraft.
The intercom tie lines should also be properly termi
appropriate number of additional units, or with a load
2.
In all installations that use the Dynamic microphone capability of the N335,
extreme care must be taken with the shielding and routing of the microphone
wiring. This is especially true of the 5
ut, where typical
signals are in the range of 100
shielding should be considered if there are any concerns about installation
related noise.
(headphone, radio
Headset and/or helmet wiring may also need to be reviewed if using Dynamic
microphones. Many of the headsets and helmets on the market have minimal
shielding for the wiring associated with the mic and phone circuits. Those with
shielded wiring often use the Phone Lo connection for the shield ground. In the
N335, the Phone Lo connection is not ground referenced, so the shielding has
no effect. This will result in substantial coupling of the Phone signal onto the
Microphone wires, leading to high levels of crosstalk in the intercom system.
These shielding considerations also apply to in
line PTT cordsets. If a review
of the headset wiring indicates there will be a problem with the shield
termi
ground at the headset jack/connector.
Set the headset volume control to the minimum volume setting prior to
conducting tests, and slowly increase the headset volume to a
2.4.2 Cautions
Do not remove compone
Do not bundle any lines from this unit
wi
strong alternat
N335 Series Audio Controller
SM46 Installation and Operation Manual
WARNING:
High volume settings can cause hearing damage.
comfortable listening level.
could cause damage to the component or unit.
significant audio interference will result.
and ground as indicat ed
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4.4, Tie Lines.
Do not bundle the microphone wiring with high-level lines
audio, coaxial cables, etc.).
nation, it is acceptable to ground the Phone Lo connection to a local
-talk, hum and ground-loop noise. Be especi
-ohm Dynamic mic inp
-250 μVrms. Special wire with Mumetal
-
nated with either the
resistor. See section
-
N335 Series Audio Controller
SM46 Installation and Operation Manual
2.4.3 Cabling and Wiring
All wire shall be selected in acco rdance 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 solder sleeves (for 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. Note that
the hood is a "clamshell" hood, and is installed after the wiring is complete. Aircraft harnessing shall
permit the unit to be removed 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 22 AWG, except power and ground lines, which
shall be a minimum of 20 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 Tie Lines
2.4.4.1 N335-001/-002
When no other unit is to be connected to the tie-line, set the ICS TIE ADJUST switch to the '1 NAT LOAD'
position (position 1), and connect a 1.8 k:resistor between the ICS TIE HI and ICS TIE LO lines (refer to
the appropriate drawings listed in section 2.7).
2.4.4.2 N335-201/-202
When no other units are to be connected to the tie-line, set the SUPER TIE SELECT switch to the 'NAT
TIE' position (position 0), set the NAT TIE SELECT switch to the '2 NAT LOADS' position (position 1), and
connect a 910 :resistor between the ICS TIE HI and ICS TIE LO lines (refer to the appropriate drawings
listed in section 2.7).
2.4.5 Mechanical Mounting
The N335 can be mounted vertically or horizontally in standard Dzus rails.
Before the unit is mounted, make all functional tests, and trimpot adjustments. Be sure the harness has
enough clearance to permit the unit to be pulled out for re-adjustment, if needed later. Make sure unit is
securely fastened to the Dzus rail, and that the connector locks are tightened before any flight is
attempted.
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N335 Series Audio Controller
SM46 Installation and Operation Manual
2.4.6 Post Installation Checks
WARNING:
High volume settings can cause hearing damage.
Set the headset volume control to the minimum volume setting prior to
conducting audio tests, and slowly increase the headset volume to a
comfortable listening level.
2.4.6.1 Voltage/Resistance Checks
These instructions apply to all N335 models unless otherwise indicated. Do not attach the N335 until the
following conditions are met.
Check the following:
a) P102 pins <1>, <2> and <8> for +28 Vdc relative to ground.
b) P102 pins <3>, <9>, <10> and <11> for continuity to ground.
2.4.6.2 Power On Checks
Power up the aircraft’s systems and confirm normal operation of all functions of the N335. Refer to
Section 3 (Operation) for specific operational details.
a) Turn on the radios and accessories required for the system.
b) Check for correct radio audio and adjust for acceptable level.
c) Run through all installed functions, and check the ICS and TX functions for all users. Refer to
Section 3 for specific operation details.
Notes: Significantly different he ad sets may have di ffe r ent mic cha ra cte ristics.
The David Clark M-7 mic is much more active than the M-4 or M-1 mics, and may
aggravate headset imbalance if used in a mixed system.
d) If any preset requires adjustm ent, be sure this is carried out before the aircr aft leaves, and t hat
the unit and its mating connector are secured before departure. Make all required log book
entries, electrical load, weight and balance amendments and other paperwork as required by your
local regulatory agency.
Note: The unit is shipped from the factory with all internal adjustments set to the normal test levels. Once
installed in th e aircraft, it may be desirabl e to c ha ng e some of t h e se s e tt in gs to be st sui t th e lo cal
operating en vironment. See Section 2.5 for adjustment information.
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.
May 18, 2012 Rev: 2.00 Page 2-4
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
N335 Series Audio Controller
SM46 Installation and Operation Manual
2.5 Adjustments and Connections
The internal adjustments that can be varied are located along the sides of the unit (refer to the drawings
listed below, where xxx refers to the specific unit). The cover must be removed to access the necessary
switches and trimpots. On the drawings, an asterisk (*) against the relevant values indicates the factory
settings.
2.5.1 Left side Adjustments
Refer to the relevant drawing (N335\xxx\404-0) for all adjustments.
2.5.2 Right Side Adjustments
Refer to the relevant drawing (N335\xxx\404-1) for all adjustments.
2.5.3 Adjustment Options
The available adjustments are liste d below. The locations and options may vary from model to m odel;
check the appropriate drawing (sections 2.5 .1 and 2.5. 2) for the unit under consid eration. Some of these
adjustments, indicated by an asterisk (*), are available on the N335-2xx models only.
NAT Tie Select / ICS Tie Adjust
match the number of units connected to the tie line.
*Super Tie Select:
rated O/P level independent of the number of units connected to the tie line.
RX Input Level:
TX Mic Output:
LS Volume Adjust:
CVR Adjust:
VOX Delay Adjust
circuits.
MIC/MIC Impedance:
provides for adjustment of the automatic level control set point associated with the #1 and #2
ALC:
microphone circuits.
Output Impedance
headphone circuits.
*Auto Emergency:
selects the gain of the intercom channel for outgoing ICS t ie audio to maintain the
selects the input level for each RX input to match the radio output level.
provides for adjustment of each TX mic output to match the radio mic input requirements.
provides for adjustment of the loudspeaker volume level.
provides for adjustment of the CVR audio output level.
: provides for adjustment of the VOX dela y associated with the #1 an d #2 microphone
provides for adjustment of microphone gain, input impedance, and bias.
: provides for adj ustment of phones output im pedance associated with the #1 and #2
provides for selection of automatic emergency power switchover.
: selects the gain of the interc om channel for incoming ICS t ie audio to
*Tie Line Mute:
*PLT TX Priority:
May 18, 2012 Rev: 2.00 Page 2-5
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
provides for selection of incoming tie line audio muting during transmit.
provides for selection of user #1 priority over user #2 during transmit.
N335 Series Audio Controller
DRAWING
REV.
DESCRIPTION
TYPE
N335-001
N335\001\403-0
1.01
Dual User Audio Controller
Interconnect
N335\001\403-1
1.01
Dual User Audio Controller
Interconnect
N335\001\403-2
1.01
Dual User Audio Controller
Interconnect
N335\001\404-0
1.00
Left Side View
Options
N335\001\404-1
1.00
Right Side View
Options
N335\001\405-0
1.01
Dual User Audio Controller
Connector Map
N335\001\905-0
1.00
Audio Controller
Faceplate
N335\001\922-0
1.00
Audio Controller
Mechanical Installation
N335-002
N335\002\403-0
1.01
Dual User Audio Controller
Interconnect
N335\002\403-1
1.01
Dual User Audio Controller
Interconnect
N335\002\403-2
1.01
Dual User Audio Controller
Interconnect
N335\002\404-0
1.10
Left Side View
Options
N335\002\404-1
1.00
Right Side View
Options
N335\002\405-0
1.01
Dual User Audio Controller
Connector Map
N335\002\905-0
1.00
Audio Controller
Faceplate
N335\002\922-0
1.10
Audio Controller
Mechanical Installation
SM46 Installation and Operation Manual
2.6 Accessories Required But Not Supplied
Installation kit p/n N335-IKC (crimp) is required to complete the installation. The kit (AEM Part No.
D50S50S15SL-IKC) consists of 2 x D50SL-IKC and 1 x D15SL-IKC.
D50SL-IKC consists of:
Quantity Description AEM Part No
1 D-min 50 Socket Housing 20-21-050
50 MS Crimp Socket 20-26-901
1* Jack Screw Set 20-27-002
1* Lock Clip Set 20-27-004
1 50 Pin Connector Hood 20-29-051
D15SL-IKC consists of:
Quantity Description AEM Part No
1 D-min 15 Socket Housing 20-21-015
15 MS Crimp Socket 20-26-901
1* Jack Screw Set 20-27-002
1* Lock Clip Set 20-27-004
1 15 Pin Connector Hood 20-29-015
* Use as required.
2.7 Installation Drawings
May 18, 2012 Rev: 2.00 Page 2-6
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
N335 Series Audio Controller
DRAWING
REV.
DESCRIPTION
TYPE
N335-201
N335\201\403-0
1.00
Audio Controller
Interconnect
N335\201\403-1
1.00
Audio Controller
Interconnect
N335\201\403-2
1.00
Audio Controller
Interconnect
N335\201\404-0
1.00
Left Side View
Options
N335\201\404-1
1.00
Right Side View
Options
N335\201\405-0
1.00
Audio Controller
Connector Map
N335\201\905-0
1.00
Audio Controller
Faceplate
N335\201\922-0
1.00
Audio Controller
Mechanical Installation
N335-202
N335\202\403-0
1.00
Audio Controller
Interconnect
N335\202\403-1
1.00
Audio Controller
Interconnect
N335\202\403-2
1.00
Audio Controller
Interconnect
N335\202\404-0
1.00
Left Side View
Options
N335\202\404-1
1.00
Right Side View
Options
N335\202\405-0
1.00
Audio Controller
Connector Map
N335\202\905-0
1.00
Audio Controller
Faceplate
N335\202\922-0
1.00
Audio Controller
Mechanical Installation
SM46 Installation and Operation Manual
Section 2.0 ends following above documents
May 18, 2012 Rev: 2.00 Page 2-7
ENG-FORM: 805-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRONICS MANUFACTURING CORP.
ON
NORM
EMER
NAV1
NAV2
DME1
DME2
MKRADF
DF
0
VHF1
0
UHF
VHF2
VHF1
FM1
0
VHF2
0
FM2
0
UHF
0
FM3
IC
GSM
LS
TX
0
FM1
0
RX SEL
0
0
FM2
VOL
0
0
VOL
FM3
RXICS
0
GSM
0
HOT
MIC MODE
VOX
DME2NAV2NAV1 DME1 ADF MKR DF
0
0
UHF
VHF2
VHF1
VHF1
FM1
0
VHF2
0
FM2
0
0
FM3
IC
UHF
GSM
0
0
RX SEL
LS
TX
FM1
0
FM2
0
ICS RX
VOL
0
0
FM3
VOL
0
GSM
0
VOX
HOT
MIC MODE
NORM
EMER
DFFM2VHF2VHF1 FM1 FM3 AUX
0 0 0
FM3
FM2
FM1
VHF2
VHF1
AUX
LS
IC
TX
0
RX SEL
CALL
0 0 0
EMER
NORM
ICS RX
VOL
VOL MIC MODE
VOXHOT
VHF1
VHF2
FM1
FM2 FM3
AUX DF
0
FM1
VHF1
FM2
0
FM3
0
AUX
LS
0
RX SEL
00
0
EMER
NORM
ICVHF2
TX
CALL
ICS
VOL
RX
VOL
HOT
VOX
MIC MODE
N335 Series Audio Controller
SM46 Installation and Operation Manual
Section 3.0 Operation
3.1 Introduction
Information in this section consists of the functional and operational procedures for the N335-001,
N335-002, N335-201 and N335-202 Dual User Audio Controllers.
The unit will be referred to as the N335, and the operational features described in this m anual wi ll app l y to
the N335-001, N335-002, N335-201 and N335-202 unless otherwise noted.
3.2 General Information
The N335 audio controllers are compatible with military and civil aviation headsets. The N335 controls the
audio from multiple receivers, and allows transmission of mic audio to a selected transm itter. VOX
intercom operation is also provided on a proprietary tie line to multiple units. A fully redundant backup
system is selectable from the front panel, and a CVR output is provided.
3.3 Controls and Indicators
N335-001 N335-002
May 18, 2012 Rev: 2.00 Page 3-1
ENG-FORM: 806-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
NAV1
NAV2
N335 Series Audio Controller
SM46 Installation and Operation Manual
N335-201 N335-202
DF
DME1
DME2
MKRADF
0
0
FM3
IC
UHF
GSM
0
0
FM1
FM2
0
0
RX SEL
LS
TX
VOL
0
0
FM3
GSM
0
0
HOT
RXICS
VOL
VOX
MIC MODE
0 0 0
FM3
FM2
FM1
VHF2
VHF1
AUX
0
0 0 0
RX SEL
LS
IC
TX
CALL
ICS RX
VOL
DFFM2VHF2VHF1 FM1 FM3 AUX
EMER
NORM
VOL MIC MODE
VOXHOT
VHF2
VHF1
0
VHF1
0
UHF
FM1
0
VHF2
0
FM2
The N335-201 and N335-202 are identical to the N335-001 an d N335-002 except that instead of
annunciator LEDs, they have deadfront text annunciators.
All volume controls and the TX selector knob are illuminated for night operations.
3.3.1 Receiver Input Controls (N335-001 and -201 only)
The receiver input controls are plastic, edge-lighted knobs. The N335 has individual volume controls for
each receiver. Rotating the control cw increas es the volume, and when the control is in the detent
position (fully ccw) the receiver audio is switched off.
3.3.2 Transceiver Input Controls
N335-001 and N335-201 N335-002 and N335-202
The transceiver input controls are plastic, edge-lighted knobs. The N335 has individual volume controls
for each transceiver. Rotating the control cw increases the volume, and when the control is in the detent
position (fully ccw) the receiver audio is switched off.
May 18, 2012 Rev: 2.00 Page 3-2
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CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
The emergency switch is a locking, two-position switch, which manually switches the
microphones and earphones over to a second complete system.
N335-201 and -202
When
e to warn the operator that the
controller is operating in the emergency mode.
N335-001 and -002
When
e to warn the operator
that the controller is operating in the emergency mode.
SM46 Installation and Operation Manual
3.3.3 Transmit Selection
The transmit selection control is an edge lighted plastic rotary control used to select the microphone for
radio transmit, loudspeaker (LS) or Intercom (IC) operation. The TX function is ‘shared’ by the two
headsets that can be connected to the N335. For N335-20x TX operations, the unit is configurable to
allow user #1 to have priority over user #2.
N335-001 and -201 N335-002 and -202
For each of the transceivers there is an associated receive volume control knob (RX SEL, see section
3.2.2), which will effectively turn the receiver off if the fully ccw detent position is selected. However, if the
Transmit Selection control has been used to select a radio for transmission that has been turned off by
the relevant RX SEL control, an auto-receive feature will ensure a fixed level signal is audible at the
headset.
The green TX LED or deadfront text will illuminate while the unit is in transmit mode.
Selecting LS diverts microphone audio to the loudspeaker system. The loudspeaker sidetone (if
required) is pre-selected at the time of installation.
When IC is selected, the transmit controls are keyed to ICS only.
3.3.4 Emergency Switch
EMER is selected, the green EMERG L ED will illum inat
EMER is selected, the deadfront text will illuminat
Note: The N335 can be configured at the factory or by a qualified installer to provide automatic
selection of the Emergency mode in the event of power failure to the Normal channel. The
manual selection describe d above is the def ault settin g for the N335 -001 and -0 02; for the N33 5-
201 and -202, automatic selection is the default setting.
May 18, 2012 Rev: 2.00 Page 3-3
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CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
N335 Series Audio Controller
These controls are plastic, edge-lighted knobs.
SM46 Installation and Operation Manual
3.3.5 CALL
CALL LED (N335-001) CALL Button (N335-002 and -202)
(Deadfront text on N335-201)
When the N335-002 or -202 user presses the momentary CALL button, the green CALL LED (N335-001)
or deadfront text (N335-201) will illuminate to indicate that communication is requested.
The CALL LED or deadfront text will only be illuminated while the CALL button is being pressed.
3.3.6 Miscellaneous Controls
3.3.6.1 ICS VOL
The ICS volume control (ICS VOL) controls the intercom volume at the operator’s headphones. Rotating the
control cw increases the volume, ccw reduces the volume, and fully ccw is switched off.
3.3.6.2 RX VOL
The main RX volume control (RX VOL) is a master control for all receive inputs except direct audio inputs.
Rotating the control cw increases the volume, ccw reduces the volume, and fully ccw is switched off.
3.3.6.3 MC MODE
The MIC MOD E control selects the mode of operation of the intercom mic. When the control is in the
centre of its range, the intercom is in the VOX mode (voice activated). As the control is rotated
counterclockwise, the system becomes more sensitive, until in the fully counterclockwise position it is in
HOT mode (on constantly). As the control is rotated clockwise, the sensitivity decreases, until at the fully
clockwise position it is in PTT mode (activated by cyclic or foot switch closure only).
May 18, 2012 Rev: 2.00 Page 3-4
ENG-FORM: 806-0100.DOTX
CONFIDENTIAL AND PROPRIETARY TO ANODYNE ELECTRON ICS MANUFACTURING CORP.
End of Section 3.0
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