9800 Martel Road Lenoir City, TN 37772 www.ps-engineering.com PMA450 Audio Selector Panel Marker Beacon Receiver Stereo Intercom System USB Charging System with Bluetooth® Connectivity Pilot’s Guide and Operation Manual 202-450-0000 Revision 3 November 2014 Applies to Serial Numbers E01151 and above Covered under one or more of the following Patents 4,941,187; 5,903,227; 6,160,496; 6,493,450; 7,391,877 FAA-Approved: TSO C139a, C35d, C71 Flying never sounded so good ® Nov.
This section provides detailed operating instructions for the PS Engineering PMA450, Audio Selector Panel/Marker Beacon Receiver/Intercom Systems. Please read it carefully before using the equipment so that you can take full advantage of its capabilities. This section is divided into sections covering the basic operating areas of the PMA450 systems.
When navigating the menus, the screen will automatically return to this “home” screen after a period of inactivity. This delay time is configurable for between 1 and 30 seconds, on the initialization menu. A vertical bar next to a button, indicates the button can perform a function on that menu. A split bar indicates that a secondary function is available when that button is held for more than 1 second.
COM Audio Selector (3) Communication audio from the other radio, not selected for transmit, can be heard by pressing the associated RCV button. You will always hear the audio from the selected transceiver. Swap Mode (Switch from Com 1 to Com 2 remotely) With an optional yoke mounted, normally open momentary switch, the pilot can change from the current Com transceiver to the other by pressing this switch.
NOTE: Monitor Mode and Spatial Audio Processing (IntelliAudio) are mutually exclusive – entering one mode will cancel the other. Navaid Selection (4) VHF Navigation receivers can be selected directly from the front panel with the N1 and N2 (VHF Navigation receiver 1 and 2) buttons. The selected source is indicated by a green LED. Additional navigation aid or other audio sources can be selected using the LCD menus. Press the top line select RADIO → SWITCHED INPUTS, → and desired audio source.
complete and uninterrupted announcements. The pilot microphone will be heard on the speaker and headsets when the pilot PTT is used. The copilot can continue to use the selected com radio while the pilot will be heard over the speaker. To exit PA mode, push and hold the middle line-select button again until PUBLIC ADDRESS is off or cycle power on the audio panel.
will indicate the receiver volume in this menu. NOTE: marker volume cannot be turned completely off. Units without marker receiver will not have a MKR Volume menu. Marker Beacon sensitivity is changed from Low to High sensitivity by pressing and holding the MKR button for 2 seconds, or until “H” appears in the display, indicating High sensitivity is activated. Intercom Operation (8) No adjustment of the IntelliVox® squelch control is necessary.
moved, the green volume bar indicator will show the level of the changing intercom volume. Adjust the radios (at the radio itself) and intercom volume for a comfortable listening level. Mono headsets in Stereo Installation Not recommended, because the benefit of IntelliAudio is lost. However, if desired, the PMA450 can be installed monaurally by using the LEFT audio connections only (left side contains Fail-Safe audio). Do NOT short left and right together.
Alternate Intercom Mode The PMA450 includes an Alternate Intercom Mode. This mode allows intercom communications between crew and passengers, without interrupting the crew’s radio communications. The passengers do not hear the aircraft radio audio. The passenger microphones are muted, such that the crew cannot hear the passengers’ microphone audio while the radio is active. Passengers can still talk to each other.
Music Muting The SoftMute™ circuit will mute the music whenever there is conversation on the radio, the intercom, or both, depending on the “Mute” mode selected. When that conversation stops, the music returns to the previous level over a second or so. The mute mode functions are controlled through Music Mute Menu which has three modes for music inputs, ALL, Karaoke & Radio mute.
Pairing and unpairing Bluetooth devices The PMA450 can be paired with up to eight individual devices. When that number is exceeded, the PMA450 will randomly drop a device to allow the new device to be added. Hint, if your old phone is not recognized by the PMA450, you may need to reset from the Bluetooth menu. Pairing separate music and telephone devices It is possible to use a different music source (iPad, iPod with Bluetooth adapter, Bluetooth enabled laptop, etc) and telephone.
NOTE Because the cell phone uses an intercom circuit, all stations on that circuit will lose intercom capability when the cell phone is in use. Intercom conversations will still be present if the cell phone provides sidetone, or if the audio panel is configured for telephone sidetone. PS Engineering does not guarantee compatibility with personal cellular telephones. Cellular telephone sidetone Some cell phones do provide sidetone, and when combined with audio panel sidetone audio distortion may occur.
the unit into the “User Configurable Mode- home screen”. This allows adjustment for: Adjust Screen (LCD) Rename Switched Inputs Bluetooth Cycle the PMA450 power to exit setup screen. LCD Screen Adjustment The first items are adjustments to the Liquid Crystal Display, allowing the installer or user to tailor the contrast and backlight intensity to suit the cockpit conditions. There are two modes: LCD Brightness & LCD Contrast. LCD will vary in real time while adjustments are made.
The three inputs are from top to bottom: Switched input #1 J1, Pin 7 wrt Pin 8 (Default ADF) Switched input #2 J1, Pin 21 wrt Pin 22 (Default DME) Switched input #3 J1, Pin 23 wrt Pin 43 (Default AUX) The user has access to rename these inputs. There is a maximum 9 letters per line, and A — Z, a — z and & 0 – 9 are available. Press the line select for desired input. Turn the large outer knob to select the letter to change. Turn the small, inner knob to increment or decrement the letter.
Warranty & Service In order for the factory warranty to be valid, the installations in a certified aircraft must be accomplished by an FAA-(or other ICAO agency) certified avionics shop and authorized PS Engineering dealer. If the unit is being installed by a non-certified individual in an experimental aircraft, a factory-made intercom harness must be used for the warranty to be valid. PS Engineering, Inc.
PMA450 Serial Number:______________________ Installed by: ________________________________ Installation date: ____________________________ PS Engineering, Inc. 2014 © Copyright Notice Copyrighted information in this manual is subject to change without notice. PS Engineering reserves the right to improve or change the products or contents of this manual, without notification of any person or agency.
