BendixKing KMA 30 User Manual

KMA 30

KMA 30

Audio Panel

Marker Beacon Receiver

Stereo Intercom System

with Bluetooth® Connectivity

Pilot’s Guide

Pilot’s Guide

and

and

Operation Manual

Operation Manual

202-890-5464 August 2012

Covered under one or more of the following Patent No. 4,941,187, 5,903,227,

6,160,496, 6,493,450

FAA-Approved: TSO C50c, C35d

EASA-Approved ETSO C50c, 2C35d

August 2012 KMA 30 Pilot Guide Page 1

This pilots guide provides operating instructions for the KMA 30 Audio
Panel. Please read it carefully before using the equipment so that you can
take full advantage of its capabilities.
This guide is divided into operating sections such as Transceiver Selection,
Audio Selector, Intercom, and Marker Beacon Receiver, and special func­tions. The center section provides a handy reference that you can remove.

KMA 30 controls

Power Switch (1) (EMG-Fail Safe Operation)

The power switch controls all audio selector panel functions, intercom and
marker beacon receiver.
When the unit is turned off, either by pressing the volume control, or if the
breaker is pulled removing power, the KMA 30 is in Fail-Safe mode. In this
mode, the pilot’s headset is connected to COM 1 for transmit and receive,
and connected to unswitched input #1 for priority audio alerts. The fail safe
audio will only be heard in the left ear of a stereo headset.

Receiver selection

Communications Transmit
(XMT) Selection (2)

To select COM 1 or COM 2 for transmit,
press the button on the bottom row, next to
the XMT legend. The bottom and top but­ton indicators light, showing that you will
transmit and receive on the selected radio.

Transmitter selection

The audio on the radio selected for trans­mit cannot be deselected.

Communications Receive (RCV) Selection (3)

To listen to the other radio, press the upper button, in the RCV (receive) sec-

Page 2 KMA 30 Pilot Guide 202-890-5464

tion. When a com is selected for receive, it will stay selected until manually
deselected, even if you select, and then deselect its transmitter.

Unless the audio panel is in “split” mode, the KMA 30 gives priority to the
pilot’s radio Push-To-Talk (PTT).
If the MONITOR function is activated (see pg 16 for more details), the au­dio from this radio will be muted when the primary radio (selected for trans­mit) is receiving a signal.

In TEL mode, the pilot is connected to the cell phone, but still hears the
COM radios selected. The radio PTT will switch the mic to the selected com,
and allow continued aircraft com­munications to continue. (See Page
6—TEL)

Audio Selector (4)

These buttons select the switched
navigation receivers. The DME
input (if present) is also shared with AUX. In SPLIT mode, only the pilot
will hear selected navigation audio.

Cockpit Speaker (5)

This switch will place all selected audio on the cockpit
speaker when this switch is selected. In “Split” mode, the
speaker carries the same audio as the pilot.

Depending on installation, important audio alerts such as radar altimeter or
autopilot disconnect will come over the speaker even if it is not selected,
while other unswitched inputs, will only be present if the SPR button is se­lected. Consult your professional avionics installer for these important con­figuration details.

Intercom Operation

IntelliVox® VOX-Squelch

IntelliVox® is a proprietary intercom squelch control. Through the use of
digital processors, each microphone is monitored, and opens instantly when
human speech is detected. This results in seamless conversations aboard the
airplane for crew and passengers, without syllable clipping or fatigue­inducing noise.

No adjustment of the IntelliVox® squelch control is necessary. There is no
field adjustment. The system is designed to block continuous tones, therefore
people humming or whistling in monotone may be blocked after a few mo­ments.

For consistent performance, any headset microphone must be placed within

August 2012 KMA 30 Pilot Guide Page 3

¼-inch of your lips, preferably against them. It is im­portant to have the microphone element parallel to your
mouth, and not twisted inside the cover.

Note: For optimum microphone performance, we rec­ommend use of a Microphone Muff Kit from Oregon
Aero (1-800-888-6910, www.oregonaero.com

). This

will not only optimize VOX performance, but will im­prove the overall clarity of all your communications.

You should also keep the microphone out of a direct wind. Moving your
head through an air stream may cause the IntelliVox® to open momentarily.
This is normal. The IntelliVox® is designed to work with normal aircraft
cabin noise levels (70 dB and above). Therefore, it may not always recognize
speech and clip syllables in a quiet area, such as in the hangar, or without the
engine running. This is also normal.

Intercom Volume Control (7)

The small volume control knob adjusts the loudness of the intercom for the
pilot and copilot. It has no effect on selected radio levels, music input levels
or passengers' volume level.

The larger, outer volume control knob controls intercom volume for the pas­sengers. It has no effect on radio or music levels.

Mono Headsets in Stereo Installation

The pilot and copilot positions work with stereo or mono headsets. If a pas­senger’s monaural headset is plugged in to a KMA 30 Stereo installation,
one channel will be shorted and all
they switch to the “MONO” mode on the headset.

passengers will lose one channel unless

Intercom Modes (8)

The intercom has three modes, ISO, ALL
and CRW. The description of the intercom

mode function is valid only when the unit is
not in the "Split" mode. In split mode, the
pilot and copilot intercom is controlled with
the Mute button.
The ICS button cycles through the intercom
modes, from top to bottom and then back up.

I

SO: The pilot is isolated from the intercom and is connected only to the air-

craft radio system. He hears the radios (and sidetone during radio transmis­sions). The copilot and passengers will hear the music sources as configured
by the audio panel configuration Function keys. See page 15—Smart Func­tion Keys for more details.

While in ISO Mode, the pilot can elect to hear music #1. First, be sure that
the ISO mode is selected. Then press and hold the TEL button, then hold the

Page 4 KMA 30 Pilot Guide 202-890-5464

ICS mode button for more than one second. The ICS indicator will blink
slowly to indicate music is present in ISO.

A

LL: All parties will hear the aircraft radio and intercom. Crew will hear

Music 1, passengers can hear Music 1 or 2. The music mutes in accordance
with the muting mode selected.

C

RW: (Crew) Pilot and copilot are connected on one intercom channel and

have exclusive access to the aircraft radios. The passengers have their own
intercom. The music that the crew and passengers will hear is determined by
the Smart Function Keys.

Marker Beacon Operation (9)

The Marker Beacon Receiver uses vis­ual and audio indicators to alert you
when the aircraft passes over a Beacon
transmitter.

The Blue, Outer Marker lamp has an
associated 400-Hertz 'dash' tone. The lamp and tone will be keyed at a rate of
two tones/flashes per second when the aircraft is in the range of the Outer
Marker.

The Amber, Middle Marker lamp is coupled with a 1300 Hertz tone, keyed
alternately with short 'dot' and long 'dash' bursts at 95 combinations per min­ute.

The White, Inner marker lamp has a 3000 Hertz 'dot' tone, and will be keyed
at a rate of six times per second.

Marker Beacon Receiver audio can be heard by selecting the "MKR" push-

button switch. There is a service adjustment located on the
top of the unit, labeled MKR VOL, to adjust the volume if
desired.

The MKR button located next to the indicator lights is used
to set the receiver sensitivity, to test the indicator lamps, and

mute the marker audio.

Pressing the MKR button for one second will cause the marker audio to
mute. The next beacon received will re-activate the audio.

Holding the MKR button for one second also activates marker test, labeled
"T/M" and illuminates all three lights simultaneously to confirm the lights
(internal and external) are working. Releasing the button returns to the last
sensitivity.

Split Mode

To activate the split mode, push both the COM 1 and
COM 2 XMT (bottom) buttons at the same time. All four

August 2012 KMA 30 Pilot Guide Page 5

indicators will come on. In the split mode, the pilot is on COM 1, while the
copilot is on COM 2.

Select either of the com XMT buttons to exit the split mode. It is not possi­ble to have the pilot on COM 2 and copilot on COM 1 in split mode.

NOTE: Due to the nature of VHF communications signals, and the
size constraints in general aviation aircraft, it is probable that there
will be some bleed-over in the Split mode, particularly on adjacent
frequencies. Bendix/King makes no warranty about the suitability of
Split Mode in all aircraft conditions.

Telephone (TEL) (10)

The TEL mode serves as a full duplex interface and
distribution for telephone systems such as portable
cellular phones with earpiece jacks or Bluetooth
connectivity. Pressing the button connects the tele­phone to the users as follows:

In ALL intercom mode, all crew and passengers will
be heard on the phone when they speak. COM and other selected radio audio
is also heard in the headsets. If the pilot or copilot pushes the radio PTT,
their mic will be transferred to the selected COM radio. The telephone party
will not hear ATC communications, and vice versa.

In CREW mode, only the pilot and copilot are connected to the telephone.
Passengers will not hear the telephone.

In ISO intercom mode, only the pilot will hear the telephone, and only he
will be heard. He will also have access to COM 1 or 2, and will transmit on
that radio using the PTT. Selected radio audio is provided to the pilot.

In cases where the cellular telephone provides sidetone, the audio panel’s
internal sidetone can be turned off, by holding the TEL and ADF buttons for
more than one second.

Warning:

United States FCC Regulations contained in 47 CFR § 22.925 contain 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.”

(Continued on page 15)

Page 6 KMA 30 Pilot Guide 202-890-5464