PS Engineering, Inc.
IntelliPAX Expansion Unit
200-250-00085
Page
2
-3
Rev. 14, Jan. 2012
2.4.2 Power Requirements
The
IntelliPAX
was designed to work with the main intercom unit. No other power is required.
The Stand Alone unit is connected to a 1A breaker to the avionics bus (2A for dual).
2.4.3 Interconnection with main unit
Interface between the IntelliPAX and the main intercom is through a 4-wire shielded cable.
Function
PMA7000
PM1200
PM1000
Series
PAC24
PMA8000E
Expansion 1
PMA8000E
Expansion 2
Expansion
Power
C
8
15
a
J2 39
J2 41
Expansion
Ground
R
4
2
c
J2 36
J2 38
Audio Input
(rt)
Audio Input
(lt)
S
16
23
J1
41
J1
40
J1
41
J1
40
Audio Output
P
3
3
22
J2 35
J2 37
On the PMA8000D, the expansion is connected to the copilot’s audio panel, except for paralleling pin 3 to
the pilot audio panel. The PMA8000D can support two expansion units, for up to 12 passenger stations.
2.4.4 Auxiliary Inputs
An entertainment device can be connected to the
IntelliPAX
. Install a 1/8" music jack convenient to the
passengers to connect the stereo entertainment device into the system. A "Soft Mute" system is installed in
the
IntelliPAX
that will mute the music during conversation on the local intercom. Radio traffic or
conversation on the main intercom will not mute the music.
A second, monaural input is provided for other purposes, such as public address cabin briefing, or
providing radio interface for cases where the intercom does not have radio on the expansion bus
(PM1000D for example).
NOTE:
The
PM1000D
is not compatible with a music input, due to the specialized interface nature. If this is
used, connect the entertainment input to the IntelliPAX (11626) alone.
A soft mute inhibit switch (not included) can be installed between IntelliPAX connector pins 12 and 24.
Closing this switch places the IntelliPAX into Karoake mode.
WARNING: Local oscillators and other internal signals from CD or radio equipment can cause undesired
interference with VHF navigation and communication equipment. Before takeoff, operate the
entertainment device to determine if there is any adverse effect on aircraft systems. If any unusual
operation is noted in flight, immediately switch the entertainment device off.
2.5
Post Installation Checkout
After wiring is complete, verify power is ONLY on pin 1 of the connector, and ground on pin 14 (with
main unit operating. Failure to do so will cause serious internal damage and void PS Engineering's
warranty. With all units plugged in and operating, verify that all active stations can communicate on the
intercom, and that any music sources are present, and the SoftMute inhibit control operates correctly (if
installed).
