PS Engineering
PMA450C Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0800
Page 1-2
July 2022
Landing System (ILS) approach. A pushbutton labeled MKR allows the pilot select audio on as well as test
and mute modes. Marker high sensitivity is also controlled by this button.
The front panel USB-type connector is available for charging devices, such as iPad or cell phones. Up to 15
Watts and 3.5 Amps are available. This connector
does NOT
provide any data interface.
In the PMA450C, a Bluetooth® wireless interface is available for wireless telephone and music connection.
APPROVAL BASIS
FAA TSO Approval
The PMA450C-series Audio Selector Panels are FAA approved under TSO C139A (Audio Amplifiers) TSO
C35d (Marker Beacon Receivers) and C71 (DC Power Supplies)
All systems comply with relevant portions of EUROCAE RTCA MPS WG No. 7/70, DO-143 and (
Marker
Beacon Receivers
), ED-14C/DO-160G (
Environmental Conditions and Test Procedures for Airborne Equip-
ment
), ED12B/DO-178B, Level D (
Software Considerations for Airborne Equipment
) and ED- 18/DO-214A
(
Audio Systems Characteristics and Minimum Operational Performance Standards for Aircraft Audio Sys-
tems
).
1.4.1
Limitations
This article meets the minimum performance and quality control standards required by a technical standard
order (TSO). Installation of this article requires separate approval.
Refer to Advisory Circular 20-41A for information on TSO installation approval.
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 operation.
