PS Engineering PMA8000MP3-Avidyne - Manual (Page 11)

PS Engineering
PMA8000B-MP3Avidyne Version (-0403) Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-890-0403 Page 2-4 Rev. 4, Jan. 2011
2.4.5 Audio Panel interface
The PMA8000B-MP3 is designed to interface with standard aircraft avionics, and presents a 510  re-
ceiver impedance. 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.
2.4.6 TEL (Duplex) Function for Cell Phones
This mode is designed to operate with telecommunications systems, such as the AirCell Guardian 1000.
Audio streams selected by the intercom mode are provided to the Tel output, and audio from Tel is pr e-
sented to the headset. This allows a telephone-like audio interface.
The TEL mode in the PMA8000B-MP3 is also compatible with many cellular telephones with hands -free
headset interfaces. The front panel 3/32” utility jack can be used as the interface to the Cell Phone, or a
3/32” jack can be installed somewhere on the aircraft panel. The wired interface jack is connected with
the PMA8000B-MP3 as shown: A patch cord (3/32” to 3/32”) is available from PS Engineering under
P/N 425-006-7026.
3/32" Cellular Jack
COM 3 Mic Input
Com 3 Audio
Audio Lo
Cellular Plug (typical)
Tip= Microphone out
Ring= Speaker audio
Base=Ground
This is a typical interconnect
PS Engineering 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
2.4.6.1 Cell phone Sidetone
As shipped from PS Engineering, the PMA8000B-MP3 does not provide cellular telephone sidetone (the
user’s voice fed back to the headset). Some cell phones do not provide sidetone. In PMA8000B MP3
Avidyne audio panels above serial number C10251, Telephone sidetone can be enabled by pressing the
MON 1 and TELK buttons for more than one second. For units with serial number C10250 and below, an
internal modification can be made that will allow the PMA8000B -MP3 to provide this sidetone. Contact
PS Engineering for more information.
NOTE
Unauthorized use of unapproved cellular telephone devices in aircraft is subject to FCC enforcement a c-
tion, which may include a $10,000 fine per incident. PS Engineering, Inc. does not endorse using unap-
proved cellular telephone equipment in flight, and takes no responsibility for the user’s action.
PS Engineering does not guarantee compatibility with personal cellular telephones. For a list of phones
that have been tested, visit
www.ps-engineering.com .
2.4.7 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 ma nual.