Honeywell Bendix/King KMA 30 User manual

KMA 30
Audio Panel with Marker Beacon Receiver
High-fidelity Stereo Intercom
FAA- TSO C50c, C35d
EASA ETSO C50c, 2C35d
Patented under one or more of the following;
No. 4,941,187; 5,903,227; 6,160,496 and 6,493,450
Document P/N 200-890-5464 Rev. 1, Aug. 2012
Bendix/King, Inc. 2012 ©
Copyright Notice
Any reproduction or retransmittal of this publication, or any portion thereof, without the expressed written permission of Bendix/King,
Inc. is strictly prohibited. For further information contact the Publications Manager at Phone [phone].
Manufactured for Bendix/King, a division of Honeywell Int’l, Inc.
Albuquerque, NM 87113, USA

Table of Contents
Section I – GENERAL INFORMATION..............................................................1-1
1.1 INTRODUCTION...................................................................................................................... 1-1
1.2 SCOPE ....................................................................................................................................... 1-1
1.3 EQUIPMENT DESCRIPTION ................................................................................................. 1-1
1.4 APPROVAL BASIS ................................................................................................................... 1-2
1.5 SPECIFICATIONS.................................................................................................................... 1-2
1.6 EQUIPMENT SUPPLIED......................................................................................................... 1-4
1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED .................................................................. 1-4
1.8 OPTIONAL ITEMS................................................................................................................... 1-4
1.9 LICENSE REQUIREMENTS ................................................................................................... 1-4
Section II - INSTALLATION ................................................................................2-1
2.1 GENERAL INFORMATION .................................................................................................... 2-1
2.1.1 SCOPE........................................................................................................................ 2-1
2.1.2 CERTIFICATION REQUIREMENTS................................................................................... 2-1
2.2 UNPACKING AND PRELIMINARY INSPECTION ............................................................................... 2-1
2.3 EQUIPMENT INSTALLATION PROCEDURES ................................................................................... 2-1
2.3.1 COOLING REQUIREMENTS............................................................................................ 2-1
2.3.2 MOUNTING REQUIREMENTS......................................................................................... 2-1
2.3.3 AUDIO PANEL MOUNTING RACK INSTALLATION........................................................... 2-1
2.3.4 AUDIO PANEL TRAY AND CONNECTOR ASSEMBLY....................................................... 2-2
2.4 CABLE HARNESS WIRING ............................................................................................................ 2-2
2.4.1 ELECTRICAL NOISE ...................................................................................................... 2-2
2.4.2 EXISTING GMA340 INSTALLATION .............................................................................. 2-3
2.4.3 POWER ........................................................................................................................ 2-3
2.4.4 AUDIO PANEL INTERFACE ............................................................................................ 2-3
2.4.5 TRANSMIT INTERLOCK................................................................................................. 2-3
2.4.6 BACKLIGHTING ............................................................................................................ 2-4
2.4.7 UNSWITCHED INPUTS ................................................................................................... 2-4
2.4.8 "SWAP" MODE ............................................................................................................. 2-4
2.4.9 TEL (DUPLEX) FUNCTION FOR CELL PHONES .............................................................. 2-5
2.4.10 PUBLIC ADDRESS MODE ............................................................................................ 2-5
2.4.11 PA MUTE (J2, PIN 12)................................................................................................ 2-7
2.4.12 MISCELLANEOUS LOGIC OUTPUT (J2, PIN 18) ............................................................ 2-7
2.4.13 AUDIO ACTIVE OUTPUT ............................................................................................. 2-7
2.5 INTERCOM WIRING ...................................................................................................................... 2-7
2.5.1 ENTERTAINMENT INPUTS ............................................................................................. 2-7
2.5.2 ENTERTAINMENT MUTING............................................................................................ 2-7
2.5.3 CONFIGURING MUSIC INPUT WITH FUNCTION KEYS ..................................................... 2-8
2.5.4 PLAYBACK BUTTON INSTALLATION.............................................................................. 2-8
2.6 MARKER BEACON INSTALLATION ............................................................................................... 2-8
2.6.1 MARKER ANTENNA INSTALLATION .............................................................................. 2-8
2.6.2 EXTERNAL MARKER LIGHTS........................................................................................ 2-9
2.6.3 MIDDLE MARKER SENSE ............................................................................................. 2-9
2.7 ADJUSTMENTS ............................................................................................................................. 2-9
2.8 COMMUNICATIONS ANTENNA INSTALLATION NOTES ................................................................ 2-10
2.9 KMA 30 PIN ASSIGNMENTS ....................................................................................................... 2-11
2.10 WIRING CHECKOUT ................................................................................................................ 2-12
2.11 UNIT INSTALLATION ................................................................................................................ 2-12
2.12 OPERATIONAL CHECKOUT ...................................................................................................... 2-12

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page ii Rev. 1, Aug. 2012
2.12.1 REQUIRED TEST EQUIPMENT ................................................................................... 2-12
2.12.2 AUDIO PANEL TEST ................................................................................................. 2-12
2.12.3 MARKER CHECKOUT ............................................................................................... 2-13
2.12.4 TEL CHECKOUT ...................................................................................................... 2-13
2.12.5 INTERNAL RECORDER CHECKOUT............................................................................ 2-13
2.12.6 FUNCTION BUTTON CHECKOUT ............................................................................... 2-13
2.13 FINAL INSPECTION................................................................................................................... 2-13
Section III OPERATION .......................................................................................3-1
3.1 SCOPE ....................................................................................................................................... 3-1
3.2 COMMUNICATIONS TRANSMIT (XMT) SELECTION (2) ................................................................ 3-1
3.3 AUDIO SELECTOR (4)................................................................................................................... 3-2
3.4 TELEPHONE (TEL) (9)................................................................................................................. 3-2
3.4.1 CELL PHONE SIDETONE................................................................................................ 3-3
3.5 SPEAKER AMPLIFIER (5).............................................................................................................. 3-3
3.6 MARKER BEACON OPERATION (10)............................................................................................. 3-3
3.7 INTERCOM OPERATION ............................................................................................................... 3-4
3.7.1 INTELLIVOX® VOX-SQUELCH...................................................................................... 3-4
3.7.2 INTERCOM VOLUME CONTROL (7) ............................................................................... 3-4
3.7.3 INTERCOM MODES (8) ................................................................................................. 3-5
3.8 MUSIC AND MUSIC MUTING (6)................................................................................................... 3-5
3.8.1 MUSIC IN PILOT ISO MODE .......................................................................................... 3-6
3.9 TELEPHONE MODE (9)................................................................................................................. 3-6
3.9.1 CELLULAR TELEPHONE SIDETONE ................................................................................ 3-7
3.10 UTILITY JACK ........................................................................................................................... 3-7
3.10.1 CELLULAR PHONE ...................................................................................................... 3-7
3.10.2 AUDIO ADVISORY INPUT............................................................................................ 3-7
3.10.3 MUSIC INPUT ............................................................................................................. 3-7
3.11 SMART FUNCTION KEYS (SFK) ................................................................................................. 3-8
3.11.1 “INTERCOM” ALTERNATE INTERCOM FUNCTION (A) .................................................... 3-8
3.11.2 MONITOR (B)............................................................................................................. 3-9
3.11.3 MUSIC (C) ................................................................................................................. 3-9
3.11.4 MUSIC 1 VOLUME .................................................................................................... 3-10
3.11.5 POWER ON ANNOUNCEMENT.................................................................................... 3-11
3.12 BLUETOOTH® INTERFACE....................................................................................................... 3-11
3.12.1 PAIRING AND UNPAIRING BLUETOOTH DEVICES ........................................................ 3-11
3.13 INTERNAL RECORDER AND PLAYBACK..................................................................................... 3-11
Section IV – Warranty ...........................................................................................4-1
4.1 WARRANTY ................................................................................................................................. 4-1
Appendix A – KMA 30 Installation Drawings ........................................................ A
Appendix B – J1 Connector Interconnect ............................................................... B
Appendix C – J2 Connector Interconnect............................................................... C
Appendix D – Instructions for FAA Form 337 and continuing airworthiness....... D
8.1 INSTRUCTIONS FOR FAA FORM 337, AUDIO PANELS ......................................................................D
8.2 INSTRUCTIONS FOR CONTINUING AIRWORTHINESS, AUDIO SYSTEM ..............................................D
Appendix E – RTCA DO160D Environmental Qualification Form............................ E
Rev Date Change
New July 2012 New release
1 Aug. 2012 Updated picture of panel for Playback feature

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 1-1 Rev. 1, Aug. 2012
Section I – GENERAL INFORMATION
1.1 INTRODUCTION
The KMA 30 represents another evolutionary step in cockpit audio control and intercommunications util-
ity. Using our patented IntelliVox® design, front panel utility jack, and pilot programmable configura-
tions, this marks the next level of audio control. The unit is designed for outstanding ergonomics and
visually defined mode annunciation and selection.
Before installing and/or using this product, please read this manual completely. This will ensure that you
will take full advantage of all the advanced features in the KMA 30.
1.2 SCOPE
This manual provides detailed installation and operation instructions for the Bendix/King KMA 30-series
of Audio Selector Panel/Intercom Systems. This includes the following units:
Model Description Bendix/King
Part Number
PS Part Number
KMA 30 Stereo Audio Selector Panel with Marker Beacon, in-
cludes utility jack and Internal Recorder System
89000003-100 050-890-5464
1.3 EQUIPMENT DESCRIPTION
The KMA 30 is a state-of-the-art audio isolation amplifier and audio selector that contains an automatic
voice activated (VOX) intercom system and integral marker beacon receiver. It can switch two transceiv-
ers (Com 1, Com 2) and six receivers (Nav 1, Nav 2, ADF, DME, MKR and AUX).
A full duplex TEL mode allows the KMA 30 to act as an audio interface between aircraft headphone and
microphones and specific aircraft approved (FAA/FCC) cellular telephone equipment, through the front
mounted jack.
Warning: Use of non-aviation approved cellular telephone equipment may be prohibited by FCC regulation.
Bendix/King is not responsible for unauthorized airborne use of cellular telephones.
For airborne use, the KMA 30 must be interfaced with an approved system.
There are five unswitched inputs, available for traffic or EGPWS, autopilot disconnect, and/or radar al-
timeter warning, with the fifth unswitched input through a front-mounted utility jack, when configured to
act as a fifth unswitched input.
Pushbuttons select the receiver audio source provided to the headphones. A SPR button allows the user to
listen to the receiver(s) selected on the cabin speaker. Except for the unswitched inputs, all speaker audio
is muted during transmit. Unswitched inputs 1,3, and 4 are always presented to the aircraft speaker.
Unswitched input 2 will be presented to the speaker when the front panel SPR push button has been se-
lected.
Pushbutton switches select one of the communication transceivers for the pilot and copilot position, and
allows radio transmission. In "Split Mode" the KMA 30 has the ability to allow the pilot to transmit on
Com 1 while the copilot can transmit on Com 2. A fail-safe mode connects the pilot headphone and mi-
crophone to COM 1 if power is removed for any reason, or if the power switch is placed in the Off (Fail-
safe) position. Unswitched input #1 is also provided to the pilot headphone in fail-safe
A six-station voice activated (VOX) intercom is included in the KMA 30. This system has Bendix/King’s
patented IntelliVox® circuitry that eliminates manual adjustments. The intercom system incorporates pilot
isolate, all and crew modes, two independent stereo music inputs with "SoftMute™". Intercom volume
control is through two concentric front panel knobs and a pushbutton intercom mode switch. The small

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 1-2 Rev. 1, Aug. 2012
volume knob controls the intercom level for the pilot and copilot, while the large knob controls the pas-
senger intercom volume. Intercom squelch is automatic.
A 3-light, 75 MHz Marker Beacon receiver is integrated in the KMA 30. This provides the necessary
Marker Beacon lights and audio indications necessary for that portion of an Instrument Landing System
(ILS) approach. A pushbutton labeled MKR allows the pilot select high or low sensitivity as well as test
and mute modes.
In the KMA 30, a Bluetooth® wireless interface is available for wireless telephone and music connection.
1.4 APPROVAL BASIS
FAA TSO Approval.
The KMA 30-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and
TSO C35d (Marker Beacon Receivers), ETSO C50C/ and 2C53d.
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (Marker
Beacon Receivers), ED-14C/DO-160C (Environmental Conditions and Test Procedures for Airborne
Equipment), ED12B/DO-178B, Level D (Software Considerations for Airborne Equipment) and ED-
18/DO-214 (Audio Systems Characteristics and Minimum Operational Performance Standards for Air-
craft Audio Systems).
Operation is subject to the following conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired opera-
tion.
1.5 SPECIFICATIONS
TSO COMPLIANCE
Marker Beacon: FAA TSO C35d, Class A ETSO 2C35d
Audio Selector/Intercom: FAA TSO C50c, Class 1a ETSO C50c
APPLICABLE DOCUMENTS: RTCA/DO-214 RTCA/DO-143 RTCA/DO-160D
RTCA/DO-178B DO-254
ENVIRONMENTAL Qualifications: A1D1CABSMXXXXXXZBABATBXXE2XXX
Operating Temperature Range: -15º C to 55ºC
Altitude: Up to 50,000 feet in an non-pressurized area
DIMENSIONS: Height: 1.3 in. (3.3 cm) Width: 6.25 in. (16.9 cm)
Depth behind panel 7.15 in. (18.16 cm)
WEIGHT
KMA 30 Unit
Rack with connectors
1.34 lb. (0.61 kg)
0.51 lb. (0.24 kg)
POWER REQUIREMENTS (Including Internal Lighting):
Voltage: 11 to 33 VDC
Maximum Current: 2.5 Amp (Externally protected by a 5A pull-type
breaker)

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 1-3 Rev. 1, Aug. 2012
Audio Selector Specifications
Audio selector panel input impedance: 510 
Input Isolation: -60 dB (min.)
Speaker Muting: -60 dB (min.)
Speaker Output (into 4 ) with no clipping
14 VDC:
28 VDC:
3 Watts (min.)
10 Watts (min.)
Receiver Inputs: 9 (Com 1, Com 2, TEL, Nav 1, Nav 2, ADF, DME,
MKR, AUX)
Unswitched Inputs: 5 (including front jack)
Transmitter Selections: 4 (Com 1, Com 2, TEL
Com1/2)
Speaker Impedance: 4 
Headphone Impedance: 150 – 1000 
Headphone Output: 38 mW each headset, no clipping <1% THD typical
Microphone Impedance: 150 - 600 
Bluetooth Radio (KMA 30 -0702 only) Class 3, FCC ID QOQWT32AE
Intercom Specifications
Intercom Positions: 6 places (with individual IntelliVox® circuits)
Music Inputs: 2, (Independent, Stereo)
Music Muting: >-30 dB "Soft Mute" when Com or intercom active.
Distortion: <1% THD @ 38 mW into 150
Mic Freq. Response, 3 dB: 300 Hz - 6000 Hz
Music Freq. Response, 3 dB: 10 Hz – 26 kHz
MARKER BEACON RECEIVER:
Frequency: 75 MHz Crystal Controlled
Sensitivity:
Low:
High:
Capable of: (preset at factory for field application)
1000 Volts (Hard) (360 to 570 V soft)
200 Volts (Hard) (130 to 200 V soft)
Selectivity: -6 dB at ±10 kHz
-40 dB at ±120 kHz
External Lamp Output: 7.5 (±4 VDC unloaded, at maximum brightness) VDC
positive when active, max. current 125 mA
MM Sense: Active high (4.5 ± 1.0VDC)
Table 1-1 Specifications

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 1-4 Rev. 1, Aug. 2012
1.6 EQUIPMENT SUPPLIED
1 ea. of the following units:
Model Description Bendix/King Part
Number
PS Part Number
KMA 30 KMA 30 Audio Panel with Marker, Stereo Intercom, and Bluetooth
connectivity
89000003-100 050-890-5464
Table 1-2 Unit Part numbers
KMA 30 Installation Kit: 250-890-5464 Bendix/King Part Number 89000003-200
Description Quantity Part
Number
Installation rack assembly 1 430-890-5464
Rack back plate 1 430-890-0050
44-pin connector kit 2 120-891-2045-
Backshell, connector 2 625-025-2465
Backshell Retainer 2 431-881-0100
4 40 X 7/16 screw w/nylon patch 4 475-440-0007
4 40 X 3/8 screw w/nylon patch 4 475-440-1038
4-40 x ¼” screw with lock washer 2 475-440-0001
Solder Lug 2 475-009-0001
Cable Clamp 1 625-001-0002
#6-32 x ½” Flat head Philips screw 6 475-632-0012
#6-32 Clip Nut 6 475-630-0002
Table 1-3 Installation Kit Contents
1.7 EQUIPMENT REQUIRED BUT NOT SUPPLIED
a. Circuit Breaker: 1 ea; 5 amp PULL TYPE REQUIRED for KMA 30
b. Speaker, 4 
c. Headphone Jacks (Stereo, as Required)
d. Microphone Jacks (as Required)
e. Headphones, 150  (Stereo), up to 6 as required
f. Microphones, up to 6 as required
g. Marker Antenna (75 MHz, VSWR <1:1.5, and appropriate for the airspeed)
h. Interconnect Wiring
1.8 OPTIONAL ITEMS
a. Cell Phone Patch Cord, 2.5mm to 2.5mm, PS Part Number 425-006-7026
b. Music Patch Cord, 3.5mm to 2.5mm, PS Part Number 425-006-2535
c. Phone patch cord for iPhone or Blackberry 3.5 mm 4-conductor to 2.5 mm
(Phone only, no music) 425-006-0354
1.9 LICENSE REQUIREMENTS
None
KMA 30 (050-890-5464 only) Bluetooth™ Radio approval:
 FCC ID: QOQWT32AE
 Industry Canada ID: 5123A-BGTWT32AE
 CE EMC Directive 89/336/EEC as amended by Directives 92/31/EEC and 93/68/EEC

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-1 Rev. 1, Aug. 2012
Section II - INSTALLATION
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnection instructions for the Bendix/King KMA 30
Audio Selector Panel/Intercom/ with internal Marker Beacon.
Please read this manual carefully before beginning any installation to prevent damage and post-
installation problems. Installation of this equipment requires special tools, test equipment (refer to section
2.12.1) and knowledge as required by 14 CFR 65.81 (b).
2.1.2 Certification Requirements
NOTE
The KMA 30 requires specialized knowledge and tools for an effective installation. An appropriately rated
Certified Aircraft Repair Station must install this equipment in accordance with applicable regulations.
Bendix/King, Incorporated warranty is not valid unless the equipment is installed by an authorized Ben-
dix/King, Incorporated dealer.
Failure to follow any of the installation instructions, or installation by a non-certified individual or agency
will void the warranty, and may result in an unairworthy installation.
2.2 Unpacking and Preliminary Inspection
Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping
damage. Examine the unit for loose or broken buttons, bent knobs, etc. Verify the correct quantity of
components supplied with the list in Section 1.6 (B). If any claim is to be made, save the shipping mate-
rial and contact the freight carrier. Do NOT return units damaged in shipping to Bendix/King. If the unit
or accessories show any sign of external shipping damage, contact Bendix/King to arrange for a replace-
ment. Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned to
Bendix/King for any other reason should be shipped in the original Bendix/King packaging, or other UPS
approved packaging.
2.3 Equipment Installation Procedures
2.3.1 Cooling Requirements
Forced air-cooling of the KMA 30 is not required. However, the units should be kept away from heat pro-
ducing sources (i.e. defrost or heater ducts, dropping resistors, heat producing avionics) without adequate
cooling air provided.
2.3.2 Mounting Requirements
The KMA 30 must be rigidly mounted to the instrument panel of the aircraft structure, within view and
reach of the pilot position(s). Installation must comply with FAA Advisory Circular AC 43.13-2B, or
other FAA-approved aircraft technical data. The unit may be mounted in any area where adequate clear-
ance for the unit and associated wiring bundle exist.
To prevent noise, avoid installing the unit close to high current devices or systems with high-voltage pulse
type outputs, such as DME or transponders. Avoid running the interconnecting bundles near any high
current wires.
2.3.3 Audio Panel Mounting Rack Installation
Remove the unit from the mounting tray by unscrewing the 3/32" hex-head screw that is in the center of
the unit. Use caution to avoid hitting the photo-detector lens. Carefully slide the unit free of the tray. Set

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-2 Rev. 1, Aug. 2012
the unit aside in a safe location until needed. Install the tray using six clip nuts (475-630-0002), and six
FHP 6-32 x ½" screws (475-632-0012). The audio selector panel must be supported at front and rear of
the mounting tray.
2.3.4 Audio Panel Tray and Connector Assembly
The rack connectors mate with two 44-pin connectors in the KMA 30. The connectors are a sub-miniature
crimp-type, and require the use a hand crimp tool, from table below (or equiv.). The connectors are
mounted to the tray back plate with #4-40 screws (475-440-1038), from the inside of the tray and the
mounting block, 431-891-0100. Ensure that proper strain relief and chafing precautions are made during
wiring and installation, using the cable clamp (625-001-0002).
Two grounding lugs are provided, which may be attached to the rear mounting plate with 2 ea #4-40 x ¼”
screws with captivated lock washers. These provide a convenient location to connect the shield ground
terminations.
Manufacturer Crimping Tool Positioner Extraction tool
AMP 601966-1 601966-6 91067-1
Daniels AFM8 K42 M24308-1
ITT-Cannon 995-0001-584 995-0001-739 91067-1
Table 2-1 Connector Pin crimping tools
2.4 Cable Harness Wiring
Referring to the appropriate Appendix, assemble a wiring harness as required for the installation. All
wires must be MIL-SPEC in accordance with current regulations. Two- and three-conductor shielded wire
must be used where indicated, and be MIL-C-27500 or equivalent specification. Proper stripping, shield-
ing and soldering technique must be used at all times. It is imperative that correct wire be used.
Refer to FAA Advisory Circular 43.13-2B for more information. Failure to use correct techniques may
result in improper operation, electrical noise or unit failure. Damage caused by improper installation will
void the Bendix/King warranty.
2.4.1 Electrical Noise
Due to the variety and the high power of radio equipment often found in today's general aviation aircraft,
there is a potential for both radiated and conducted noise interference.
The KMA 30 power supply is specifically designed to reduce conducted electrical noise on the aircraft
power bus by at least 50dB. Although this is a large amount of attenuation, it may not eliminate all noise,
particularly if the amplitude of noise is very high. There must be at least 13.8 VDC present at the connec-
tor, J2 pins 8 & 9, of the KMA 30 for the power supply to work in its designed regulation. Otherwise, it
cannot adequately attenuate power line noise. Shielding can reduce or prevent radiated noise (i.e., beacon,
electric gyros, switching power supplies, etc.) However, installation combinations can occur where inter-
ference is possible. The KMA 30 was designed in a RFI hardened chassis and has internal Electromag-
netic Interference (EMI) filters on all inputs and outputs.
Ground loop noise occurs when there are two or more ground paths for the same signal (i.e., airframe and
ground return wire). Large cyclic loads such as strobes, inverters, etc., can inject noise signals onto the
airframe that are detected by the audio system. Follow the wiring diagram very carefully to help ensure a
minimum of ground loop potential. Use only Mil Spec shielded wires (MIL-C-275000, or better). Under
no circumstances combine a microphone and headphone wiring into the same shielded bundle. Always
use a 2- or 3-conductor, shield wire as shown on the installation-wiring diagram.
The shields can be daisy-chained together, and then connected to the ground lugs mounted on the back
plate shown in Appendix B.

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-3 Rev. 1, Aug. 2012
Radiated signals can be a factor when low level microphone signals are "bundled" with current carrying
power wires. Keep these cables physically separated. It is very important that you use insulated washers to
isolate the ground return path from the airframe to all headphone and microphone jacks.
2.4.1.1 Music Inputs and Noise
KMA 30 units utilize a differential input to help prevent noise from entering the music system. This fea-
ture is usually transparent to the installer; however, it is important that the appropriate music signal and
ground connections are made directly to the dedicated music signal and ground inputs on the KMA 30.
The power for IFE and audio panel should be a common bus.
If a music jack instead of a music source is installed for Music 1 or 2, we recommend grounding the jack
to airframe ground.
NOTE
Adding a high-performance audio control system, particularly in conjunction with high-performance ac-
tive noise canceling headsets, cannot improve on older avionics that were designed for cabin-speaker use.
Bendix/King makes no claim that the audio panel will provide a noise-free audio quality under all instal-
lation conditions, particularly with older avionics.
2.4.2 Existing GMA340 Installation
If the installation replaces a GMA340, no changes are necessary as long as the existing installation meets
the requirements. All existing functions of the GMA340 as well as all of the new capabilities afforded by
the KMA 30 will become instantly available. Be advised, the KMA 30 does not support 3 VHF Coms,
however. The KMA 30 handles two COM transceivers and a full-duplex cellular/satellite telephone.
Added capabilities include, IntelliVox®, DuTel™ duplex telephone, improved music fidelity and Soft
Mute™ and Karaoke™ muting modes, improved and more flexible music distribution control, internal
recorder function, and additional unswitched audio inputs.
Installations where the external marker outputs are connected to a Sandel 3308 Navigation Display will
require additional loading resistors. Refer to the Sandel installation data for more information.
2.4.3 Power
The KMA 30 is compatible with both 14 and 28 Volt DC systems. A five (5) Amp circuit breaker is re-
quired for all installations. Power and ground wires should be #22 connected to J2 Pins 8 and 9. Connect
airframe ground to J2 Pin 10 and 11 only. No dropping resistors are required.
2.4.4 Audio Panel interface
The KMA 30 is designed to interface with standard aircraft avionics, and presents a 510 receiver im-
pedance. For best results, a twisted-shielded cable is recommended from the avionics audio source to the
audio panel, with the shield grounded at the audio panel end.
Some avionics do not provide a separate audio low, and may introduce additional electrical noise into the
system. For best results, connect the audio low from the audio panel to the radio ground, using one con-
ductor of the twisted-shielded cable.
2.4.4.1 Speaker Load
The KMA 30 contains one speaker amplifier. Some units with internal speaker amplifiers, such as the
King Radio KX170-series, require a resistive load to prevent damage if their speaker amplifier is not used.
Connect the speaker output from the unit to the COM 2 Speaker load input on the KMA 30 (J1 27 WRT
28). The speaker load is 16 , 3W.
2.4.5 Transmit Interlock
Some communications transceivers use a transmit-interlock system. To fully utilize the Split Mode fea-
ture, this function must be disabled. Consult that manufacturer's installation manual.

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-4 Rev. 1, Aug. 2012
2.4.6 Backlighting
The KMA 30 has an automatic dimming of the pushbutton annunciation LEDs and marker lamps con-
trolled by a photocell. Control of the unit backlighting is through the aircraft avionics dimmer For 14 V
aircraft, connect J2 Pins 6 and 7 to the aircraft dimmer bus, and pin 5 to ground. For 28-volt systems,
connect pin 7 to the aircraft dimmer, and pins 5 and 6 to ground.
If an external dimmer control is not used, a constant back light illumination can be established for night-
time viewing. Pin 6 or 7 (depending on system voltage) must be tied to power (J2, pin 8 or 9) for the back
lighting system to work. The photocell mounted in the unit face will automatically adjust the intensity of
the push-button annunciator LEDs.
2.4.7 Unswitched inputs
J1, pins 31, 29 and J2 pin 15 are unswitched, unmuted (by transmitter keying), inputs # 1, 3 and 4, re-
spectively. These inputs are presented to the pilot and copilot regardless of the audio configuration, and
will always mute the entertainment inputs. These 510Ω inputs can be used for altimeter DH audio, GPS
waypoint audio, autopilot disconnect tones, or any other critical audio signal. Unswitched #1 is always
presented to the speaker, plus to the crew headphones, and is available to the pilot in fail-safe (off) mode.
Unswitched 3 and 4 inputs are always presented to the crew headphones and to the aircraft speaker.
Unswitched
Input
Hear in
Fail Safe
Hear in
Crew Headset
SPR button
Select
Gain
1 Yes Yes No 1:1(fixed)
2 No Yes Yes 1:1(fixed)
3 No Yes No Adjustable
4 No Yes No 1:1(fixed)
5 (jack) No Yes No 1:1(fixed)
Table 2-2 Unswitched input table
Unswitched #2, J1 pin 44 is unswitched is always connected to the Pilot’s headphone. However, this
unswitched audio is only presented to the aircraft speaker when the SPR push button has been selected.
The audio low for unswitched #4 (J2, pin 15) should be connected to a convenient audio low. However,
this should NOT be connected to Music Low.
Unswitched #1 is presented to the pilot headphone in fail-safe (off) mode.
NOTE
Inputs 1, 2 and 4 are fixed (1:1), and any audio level adjustments must be made at the input source.
Unswitched #3 has a variable adjustment control located on the bottom side of the unit. This control al-
lows you to adjust the volume level of that unswitched input. Refer to Adjustments section.
The front panel jack can be configured to act as a fifth unswitched input. When configured through the
front panel function switches (see operational section), the audio input to this jack will be presented to the
pilot and copilot headsets, and not muted.
NOTE
The front-mounted utility jack is intended for portable equipment that is advisory in nature. It is NOT
INTENDED for use as a primary warning channel. Audio of importance MUST ALWAYS be hard-wired
into the unswitched inputs of the audio panel.
2.4.8 "Swap" Mode
When a momentary, normally open, push-button switch is connected between pin 20 on the J2 connector
and aircraft ground, the user can switch between Com 1 and 2 by depressing this switch without having to
touch the mic selector switch. This yoke-mounted switch eliminates the need to remove your hands from

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-5 Rev. 1, Aug. 2012
the yoke to change transceivers. The transfer of TX indication from Com 1 to Com 2 shows that the swap
has been initiated; there is no dedicated swap indicator.
2.4.9 TEL (Duplex) Function for Cell Phones
Audio streams selected by the intercom mode are provided to the TEL output, and audio from TEL is pre-
sented to the headset. This allows a telephone-like audio interface.
The TEL mode in the KMA 30 is compatible with many cellular telephones with hands-free headset inter-
faces. The front panel 3/32” utility jack can be used as the interface to the Cell Phone, or a jack can be
installed somewhere on the aircraft panel. The wired interface jack is connected with the KMA 30 as
shown: A patch cord (3/32” to 3/32”) is available from Bendix/King under P/N 425-006-7026.
3/32" Cellular Jack
COM 3 Mic Input
Com 3 Audio
Audio Lo
KMA 30
J1
Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground
This is a typical interconnect
Bendix/King does not guarantee
compatability in all cases.
Cellular Phone
Interconnect
Figure 2-1 Cellular telephone interface for rear connector, if an additional jack is desired
The KMA 30 is compatible with most Bluetooth® enabled devices for making and receiving telephone
calls through the aircraft audio system.
2.4.9.1 Cell phone Sidetone
As shipped from Bendix/King, the KMA 30 does provide cellular telephone sidetone (the user’s voice fed
back to the headset). Some cell phones already provide sidetone. In KMA 30 audio panels, Telephone
sidetone can be disabled if desired by pressing the TEL and ADF buttons for more than one second.
NOTE
Unauthorized use of unapproved cellular telephone devices in aircraft is subject to FCC enforcement ac-
tion, which may include a $10,000 fine per incident.
FCC Regulation 47 CFR § 22.925 Prohibition on airborne operation of cellular telephones.
Cellular telephones installed in or carried aboard airplanes, balloons or any other type of aircraft must not
be operated while such aircraft are airborne (not touching the ground). When any aircraft leaves the
ground, all cellular telephones on board that aircraft must be turned off.
Bendix/King, Inc. does not endorse using unapproved cellular telephone equipment in flight, and takes no
responsibility for the user’s action.
Bendix/King does not guarantee compatibility with personal cellular telephones.
2.4.10 Public Address Mode
By pressing the Mute and SPR pushbuttons at the same time, the KMA 30 will be placed into public ad-
dress (PA) mode. In this mode, the pilot will be talking over the cockpit speaker when he presses his PTT
switch. Copilot will still continue on the selected COM radio.
When the discrete Output is enabled, J2 Pin 19 will go low when in PA mode, providing a logic level that
can be used to incorporate a speaker-switching scheme. This 50 mA circuit (10Ω Z) can control a switch-
ing means such as a relay that would transfer the speaker output amplifier from the cockpit speaker to

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-6 Rev. 1, Aug. 2012
drive another cabin speaker. If the PA mode is used with a microphone in proximity to an active cockpit
speaker, feedback might result.
To enable the PA discrete Output located at the rear connector, the internal configuration jumper, J4,
MUST be placed across both pins in the header. This jumper is shipped as open from the factory.
2.4.10.1 Public Address Output Jumper
1. Remove qty. 5 Phillip head screws from the PM8000B. NOTE: THE SCREW IN THE REAR
OF THE PANEL IS A DIFFERENT LENGTH THAN THE OTHER FOUR. YOU MUST
PUT THE SHORTER LENGTH SCREW BACK IN THE SAME LOCATION OR
DAMAGE WILL OCCUR. See Figure #1.
Figure 2-2 Screw Locations
2. Move the blue jumper located in the back corner near the sub-D connectors on both pins of J4.
See Figure #2-3.
Long shaft screws
Short shaft screw

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-7 Rev. 1, Aug. 2012
Figure 2-3 Jumper Location
4. Place the lid back on the unit, aligning holes.
5. Install and tighten qty. 4 long thread screws into the lid, and one short screw on the rear.
2.4.11 PA Mute (J2, Pin 12)
Pin 12 of J2 is a TTL logic output that is pulled low during PTT operation.
2.4.12 Miscellaneous Logic Output (J2, Pin 18)
Pin 18 of the J2 connector is pulled to ground whenever the AUX button is depressed. This serves as a
control line for external devices, such as an entertainment system that the pilot wishes to control.
This pin can also be used to control passenger (Music 2) Karaoke Mode, by connecting to pin 13 of the
J2.
NOTE
J2, Pin 18 should NOT be used if the AUX is going to be used to switch DME or auxiliary audio.
2.4.13 Audio Active Output
Pin 24 on the J1 connector (and PA Mute Pin 12 on J2) should be connected to Apollo CNX80 for audio
message prioritization, refer to CNX80 installation manual for details.
2.5 Intercom wiring
See Appendix C and D for intercom connection configurations. It is critical to the proper operation of this
system to have this connector wiring made in accordance with these diagrams. Use 2- and 3-conductor,
MIL-spec cable as shown. Connect the shields at the audio panel end only, and tie to the audio low inputs
as shown.
2.5.1 Entertainment Inputs
The KMA 30 has two INDEPENDENT music inputs, PLUS a front mounted jack that is connected to
Entertainment 1. Entertainment input number 1 is J2 pins 23 (left channel) and 24 (right channel), with
respect to pin 25, and Entertainment number 2 is connected to 26 (left channel), 27 (right channel), with
respect to 28.
KMA 30 (050-890-5464) has wireless connectivity to stream music from a paired Bluetooth device. This
stream is distributed as Music 1. Refer to §3.11.3 for more information.
NO TE
Use th e low level out put of an y addi tion al en tertainmen t devi ce to con n ect to the a u-
dio pa nel. Maxi mum sign al level is 3 VAC p-p. DO NO T use a speaker -level output,
th is will ca use in ternal da mage i n th e audi o pan el.
2.5.2 Entertainment muting
The KMA 30-system incorporates a four-mode "Soft Mute™" system. This will mute the entertainment
devices during ICS and/or radio conversation. See Section 3.8 for more information.
Jumper Off (no
PA mode) Jumper On
(PA mode
enabled)

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-8 Rev. 1, Aug. 2012
Press the Mute switch to activate the four Karaoke modes (disabling crew SoftMute™). Turning down the
entertainment volume allows the pilot to place the entertainment into the background while having the
radios in the foreground and eliminates the constant interruption of the music while still keeping the ra-
dios a priority.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause undesired interference with
other aircraft systems. Before takeoff, operate the entertainment devices to determine if there is any ad-
verse effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off
the entertainment devices.
All additional entertainment devices must be switched off for both takeoff and landing.
2.5.2.1 Entertainment 2 Mute (J2 Pin 13 & 14)
Connecting J2 pin 13 to pin 14 (or ground) through a SPST switch places the entertainment #2 music
source into the Karaoke Mode. In this mode, incoming music and intercom conversation will not mute the
music for the passengers’ intercom net. This allows uninterrupted music during casual conversation and
at times when radio communications are of lesser importance.
If desired, the AUX button can act as the passengers’ mute control. Connect J2 pin 18 (AUX logic) to J2
pin 13 (Entertainment. 2 Mute inhibit). Then, Entertainment 2 will not mute when the AUX button is on.
(Not recommended if DME is input is used.)
2.5.3 Configuring Music Input with Function Keys
The music inputs can be configured by the user from the front panel (see section 3.10). There are three
configurations available, independent, ICS mode dependent, and single input (music 1 to all stations).
If the inputs are independent, Input #1 (or the front jack) is provided to the pilot and copilot. Muting
(SoftMute™) is controlled by the front panel “mute” button. Music 2 is provided to the passengers at all
times, with muting controlled by an external switch (see § 2.5.2.1).
If the inputs are intercom mode dependent, input 1 goes to the pilot, copilot, and all passengers when the
intercom is in the “ALL” mode. In “ISO” mode, the copilot and passengers will hear music input 1. Music
2 is ONLY active in CREW mode, and then provided only to the passengers. The externally switched pas-
senger SoftMute™ control becomes active in CREW.
If the single-source mode is activated through the function keys, the front panel jack (and music 1) is con-
nected to all intercom positions, regardless of the intercom mode. Crew muting is controlled by the front
panel, passenger muting controlled through the switch. See section 3.11 for more details.
2.5.3.1 Annunciation and recorder playback
The pilot and copilot can hear the Function Key annunciations. If the customer wants to exclude playback
and function key annunciation playback from the copilot position, contact Bendix/King for more informa-
tion.
2.5.4 Playback button Installation
Internal Recorder can be played back from the front panel. A remote momentary, normally open (NO)
push button switch may be installed if desired to remotely activate the Recording System playback. This
switch can be located anywhere in cockpit convenient to the pilot's reach. The NO switch should be con-
nected to pin 22 of J2 of the KMA 30, and ground. When installed, this button will act as in § 3.13.
2.6 Marker Beacon Installation
2.6.1 Marker Antenna Installation
A marker beacon antenna, appropriate to the type and speed of the aircraft, is required (not included).
Refer to aircraft and antenna manufacturer's installation instructions, as well as AC43.13-2B (or later

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-9 Rev. 1, Aug. 2012
revision), Chapter 3, for information on proper antenna installation techniques. The marker beacon an-
tenna must be mounted on the bottom of the aircraft.
2.6.2 External Marker Lights
For installations that require external marker beacon lights, there are three outputs that can drive 12-Volt
lamps only. The external output lamps are driven high (typically +7.0 VDC 4.0 VDC unloaded, at MAX
brightness) when active. Maximum source current per lamp is 125 mA. Voltage varies with photocell
dimming.
2.6.3 Middle Marker Sense
A Middle Marker Sense output signal is available from the PMA8000 to certain flight control systems.
This function will not operate during the test mode. This output will go to +4.5 VDC ( 1.0 VDC) when a
valid Middle Marker signal is received. This output is J1, pin 39.
2.7 Adjustments
The KMA 30 is factory adjusted to accommodate the typical requirements for most aircraft configurations.
There are three adjustments in the top cover that allow the installer to tailor the specific functions.
Figure 2-4- KMA 30 Adjustments, top cover
 Speaker Volume- Turn adjustment clockwise to increase cabin speaker output.
 Marker Beacon Volume, turn adjustment counterclockwise to increase marker beacon audio
level.
 TEL volume, turn adjustment Clockwise to increase the incoming telephone audio.
 ANN VOL Function Mode Annunciation Volume – controls the level of the to access voice an-
nunciations contained in the unit. (Top cover must be removed).
Front
of unit
NOTE:
If top cover is removed
for ANY reason, you
MUST replace the cover
screws with the proper
length, otherwise damage
will result.
Shorter Screw

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-10 Rev. 1, Aug. 2012
 Unswitched Input 3 Volume, adjust from 50% to 200% of input value. (Bottom cover must be
removed).
Figure 2-5 – Unswitched 3 Audio Level (bottom cover removed)
2.8 Communications Antenna Installation Notes
For best results while in Split Mode, it is recommended that the one VHF communications antenna is lo-
cated on top of the aircraft while the other communications antenna is installed on the bottom. Any an-
tenna relocation must be accomplished in accordance with AC 43.13-2B, aircraft manufacturers’ recom-
mendations and FAA-approved technical data.
WARNING
It is probable that radio interference will occur in the split mode when the frequencies of the two air-
craft radios are adjacent, and/or the antennas are physically close together. Bendix/King makes no
expressed or implied warranties regarding the suitability of the KMA 30 in Split Mode.

Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-11 Rev. 1, Aug. 2012
2.9 KMA 30 Pin assignments
J1 Function J2 Function
1 Mkr Ant 1 Pilot Phones Low
2 Mkr Ant Low 2 Copilot Phones Low
3 Telephone Audio in 3 Copilot Phones (L)
4 Telephone Low 4 Copilot Phones (R)
5 Telephone Mic Audio 5 Lights Low
6 Telephone Mic Key 6 14/28 V Lights
7 ADF Audio In 7 14/28 V Lights
8 ADF Audio Low 8 Aircraft Power
9 Com 1 Audio 9 Aircraft Power
10 Com 1 Audio Low 10 Aircraft Ground
11 Com 1 Mic 11 Aircraft Ground
12 Com 1 Mic Key 12 PA Mute
13 Com 2 Audio 13 Mute Inhibit
14 Com 2 Audio Low 14 Mute Inhibit Low
15 Com 2 Mic 15 Unswitched #4
16 No Connect 16 Pilot Phones (L)
17 Nav 1 Audio 17 No connect
18 Nav 1 Audio Low 18 Misc (AUX) logic output
19 Nav 2 Audio 19 PA Enable Output
20 Nav 2 Audio Low 20 Swap
21 DME Audio 21 Swap Low
22 DME Audio Low 22 IRS Playback
23 Auxiliary Audio Input 23 Music 1 (L)
24 CNX80 Inhibit 24 Music 1 (R)
25 No connect 25 Music 1 Low
26 No connect 26 Music 2 (L)
27 Com 2 Speaker Load 27 Music 2 (R)
28 Com 2 Speaker Load 28 Music 2 Low
29 Unswitched Audio 3 29 No Connect
30 Com 2 Mic Key 30 No Connect
31 Unswitched # 1 31 Pilot Phones (R)
32 Unswitched #1 Low 32 Copilot Mic Audio
33 Pilot Mic Audio 33 Copilot Mic PTT
34 Pilot Mic PTT 34 Copilot Mic Low
35 Pilot Mic Low 35 Pass 1 Mic Audio
36 Ext IM MKR 36 Pass 1 Mic Audio Low
37 Ext OM MKR 37 Pass 2 Mic Audio
38 Ext MM MKR 38 Pass 2 Mic Audio Low
39 MM Sense 39 Pass 3 Mic Audio
40 Pass HP (L) 40 Pass 3 Mic Audio Low
41 Pass HP (R) 41 Pass 4 Mic Audio
42 Pass HP Low 42 Pass 4 Mic Audio Low
43 Unswitched #2 Low 43 Speaker Low
44 Unswitched #2 Audio 44 Speaker Output
Table 2-3 Pin Assignments

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KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-12 Rev. 1, Aug. 2012
2.10 Wiring Checkout
After wiring is complete, verify power is ONLY on pins 8 and 9 of the J2 and airframe ground on connec-
tor pins 10 and 11. Failure to do so will cause serious internal damage and void Bendix/King's warranty.
2.11 Unit Installation
To install the KMA 30, gently slide the unit into the mounting rack until the hold-down screw is engaged.
While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of the unit
until it is secure. DO NOT OVER TIGHTEN.
CAUTION
Apply steady pressure to the bezel while screwing the unit into the tray to ensure even seating of the unit
and connectors. WARNING Do not over-tighten the lock down screw while installing the unit in tray.
Internal damage will result.
2.12 Operational Checkout
2.12.1 Required Test Equipment
In order to return an aircraft to service after installation of the KMA 30, the installer must have access to
a Marker Beacon signal generator:
a. IFR NAV401L, NAV402AP, IFR4000
b. TIC T-30D, T-36C
Equivalent test equipment is acceptable as long as the testing requirements can be met.
2.12.2 Audio Panel Test
NOTE
The IntelliVox® is designed for ambient noise levels of 80 dB or above. Therefore some clipping may oc-
cur in a quiet cabin, such as without the engine running, in a hangar. This is normal.
1. Apply power to the aircraft and avionics.
2. Plug headsets into the pilot, copilot, and occupied passenger positions.
3. Verify fail-safe operation by receiving and transmitting on com 1 from the pilot position, with the
audio panel power off. The Com audio will be present in one ear cup only.
4. Switch on the unit by pressing the volume (VOL) knob.
5. Check intercom operation.
6. Push the Com 1 Xmt select button (lower row).
7. Verify that both of the Com 1 buttons light. Verify that transmit button LED (Light Emitting Diode)
near the mic selector is not blinking. If the LED is blinking, stop testing and troubleshoot the micro-
phone PTT installation.
8. Verify proper transmit and receive operation from the copilot position, noting that the copilot PTT
switch allows proper transmission on the selected transceiver. Verify that the Com 1 Xmt button
blinks when transmitting.
9. Verify that pushing the COM 2 button causes the button to illuminate, and the Com 2 receiver to be
heard. Verify operation on Com 1 from the pilot position.
10. Repeat for Com 2
11. Press and hold the Com 1 Xmt button. While holding the Com 1 button, press the Com 2 Xmt button.
This places the unit in “split Mode;” Verify that the pilot can transmit and receive on Com 1, while
the copilot transmits and receives on Com 2.
12. Verify proper operation of all receiver sources by selecting them using the appropriate button. The
button illuminates to show which source is in use.
13. Push the SPR button. Verify that all selected audio is heard in the cockpit speaker. Verify that the
audio mutes when the mic is keyed.

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KMA 30 Audio Panel and Intercom System
Installation and Operator’s Manual
200-890-5464 Page 2-13 Rev. 1, Aug. 2012
14. Verify that the appropriate LED in the lower button row blinks when either push to talk is keyed.
15. Verify proper Intercom system operation in the ALL, ISO and CREW modes (see Table 3-1).
16. Verify that the audio selector panel system does not adversely affect any other aircraft system by sys-
tematically switching the unit on and off, while monitoring the other avionics and electrical equip-
ment on the aircraft.
2.12.3 Marker Checkout
1. Connect a ramp generator at the antenna end of the marker coax. With the unit under test in HI sensi-
tivity, verify that a 160 V, modulated 95% with 1300 Hz, signal will illuminate the amber (M)
marker light, and that marker audio is present in the headphones when the Marker Audio (MKR)
push-button has been depressed. Select SPR for speaker to verify marker audio availability on the
cabin speaker. Verify that the white (I) and blue (O) lights will illuminate within  3dB of the amber
lamp, with 3000 HZ and 400 Hz applied, respectively.
2. Repeat with the unit in LOW sensitivity, with 430 Volts applied.
3. Connect the marker antenna and verify proper operation.
2.12.4 TEL Checkout
Press the TEL button. Verify that the pilot headset is connected to the cellular telephone system (if in-
stalled). Verify that by using the pilot side PTT, the pilot can transmit on the other selected radio (Com 1
or Com 2). The telephone function will allow any person heard by the pilot on the intercom, also heard on
the telephone.
2.12.4.1 Bluetooth Checkout (050-890-5464 only)
Verify that the KMA 30 will “pair” with a Bluetooth device, and interface with cellular phone and Music
source. See section 3.12 for more information.
2.12.5 Internal Recorder Checkout
With headset plugged into pilot’s side jacks, tune COM 1 to local frequency, such as FSS or ATC ground.
Select Com 1 on mic selector switch, and record several incoming radio transmissions.
Press the Com receiver pushbutton that corresponds to the selected radio transmitter and hold for ap-
proximately one second. This action will then automatically play back the last recorded message. Press
and HOLD the button again to stop the play back, and then momentarily press again to play prior mes-
sages.
This audio should appear in the pilot and copilot headsets, and only be incoming transmissions from the
transceiver selected in the mic select switch. Depress the audio panel or yoke mounted playback switch,
and verify that messages play, in the order received. Repeat for COM 2. The playback will be stopped by
audio on the selected com. The message can be replayed from the beginning, and audio received during
the playback will not be stored.
2.12.6 Function Button Checkout
While listening to the pilot’s headset, press and hold the “TEL” button. Press the AUX, MUTE and SPR
buttons, verifying that the annunciations play back in pilot headset. See operation section for information.
Incoming audio on selected com will stop the audio.
2.13 Final Inspection
Verify that the wiring is bundled away from all controls and no part of the installation interferes with air-
craft control operation. Move all controls through their full range while examining the installation to see
that no mechanical interference exists. Verify that the cables are secured to the aircraft structure in accor-
dance with good practices, with adequate strain relief. Ensure that there are no kinks or sharp bends in the
cables and coaxial cables. Verify that the cables are not exposed to any sharp edges or rough surfaces, and
that all contact points are protected from abrasion.
Complete documentation that may be required, such as a logbook entry, weight and balance computation and FAA
Form 337. Sample text for FAA Form 337, and instructions for continuing airworthiness can be found in Appendix F.
Return completed warranty registration application to Bendix/King.