Pa Mute (J2, Pin 12); Miscellaneous Logic Output (J2, Pin 18); Audio Active Output; Intercom Wiring - Honeywell Bendix/King KMA 30 Manual

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.
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
Use t h e l ow l evel out put of a n y a ddi t i on a l en t er t a i n m en t devi ce t o con n ect t o t h e a u-
di o pa n el . Ma xi m um si gn a l l evel i s 3 VAC p-p. DO NO T use a spea ker -l evel out put ,
t h i s wi l l ca use i n t er n a l da m a ge i n t h e a udi o pa n 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
200-890-5464
Bendix/King by Honeywell
KMA 30 Audio Panel and Intercom System
Installation and Operator's Manual
Jumper Off (no
PA mode)
NOTE
§3.11.3 for more information.
NO TE
Section 3.8
Page 2-7
for more information.
Rev. 1, Aug. 2012
Jumper On
(PA mode
enabled)