PS Engineering PMA7000CD Installation Manual - Manual (Page 5)

PS Engineering
PMA7000CD- Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-790-0010 Page 1-2 Revision 10, September 2005
A six-station voice activated (VOX) intercom is included in the PMA7000CD. This system has PS Engi-
neering’s exclusive IntelliVox® circuitry that eliminates manual adjustments. The system contains six sepa-
rate VOX mic circuits, and only opens the microphone channel in use.
The intercom system incorporates pilot isolate and crew modes, two stereo music inputs with "Soft Mute,"
and flashing LED indicators for transmit indications. Intercom control is through front panel-mounted
knob and 3 position mode switch. A concentric volume controls the music level, and intercom level for the
pilot and copilot. Passenger headphone volume is factory set, and adjusted in flight with headset-mounted
volume controls. Passenger volume control is further adjustable through screwdriver access in the top of
the unit. Intercom squelch is automatic.
An optional 3-light Marker Beacon receiver is integrated in the PMA7000CD. This provides the necessary
Marker Beacon lights and audio indications necessary for an Instrument Landing System (ILS) approach.
1.4 APPROVAL BASIS -
TSO Approval.
The PMA7000-series Audio Selector Panels are FAA approved under TSO C50c (Audio Amplifiers) and
TSO C35d (Marker Beacon Receivers). ). In addition, they are approved by the Joint Airworthiness Au-
thorities under JTSO C50C and JAR-TSO 2C35d.
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 (Software Considerations for Airborne Equipment) and ED- 18/DO-214
(Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft Audio Sys-
tems).
The PCD7100-R is FAA TSO approved under TSO C50c and JAA approved under JAR TSO C50c.
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.