PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000
Page 3-4
Rev. 6, Dec. 2015
Additional navigation aid or other audio sources can be selected using the LCD menus.
Press the bottom line select
RADIO → SWITCHED INPUTS, →
and desired audio source.
NOTE: Switched Inputs can be renamed at the configuration set up. See §
3.13
for more information.
In
SPLIT
mode, only the pilot will hear selected navigation audio.
3.6 Speaker Amplifier (7)
To activate the PMA450 cockpit speaker output, press and hold the bottom line-select button (SPR) for one
second or until SPR appears in the display.
In “Split Mode” all audio that the pilot hear will also be present in the speaker.
Unswitched audio #1 & #2, (the inputs dedicated to autopilot disconnect, altimeter warning, etc.) will come
through the speaker regardless of the speaker button position.
When a cell phone call is active, the selected radio audio is removed from the speaker.
Depending on installation, important audio annunciations such as radar altimeter or autopilot disconnect
will come over the speaker even if it is not selected, while other unswitched, but muted inputs, such as GPS
alerts, will only be present if the SPR button is selected. Consult your professional avionics installer for
these important configuration details.
Unswitched
Input
Hear in
Fail Safe
(Pilot)
Hear in
Crew Headset
Hear in SPR
1
Yes
Yes
Yes
2
No
Yes
Yes
3
No
Yes
When SPR selected
4
No
Yes
When SPR selected
PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000
Page 3-4
Rev. 6, Dec. 2015
Additional navigation aid or other audio sources can be selected using the LCD menus.
Press the bottom line select
RADIO → SWITCHED INPUTS, →
and desired audio source.
NOTE: Switched Inputs can be renamed at the configuration set up. See §
3.13
for more information.
In
SPLIT
mode, only the pilot will hear selected navigation audio.
3.6 Speaker Amplifier (7)
To activate the PMA450 cockpit speaker output, press and hold the bottom line-select button (SPR) for one
second or until SPR appears in the display.
In “Split Mode” all audio that the pilot hear will also be present in the speaker.
Unswitched audio #1 & #2, (the inputs dedicated to autopilot disconnect, altimeter warning, etc.) will come
through the speaker regardless of the speaker button position.
When a cell phone call is active, the selected radio audio is removed from the speaker.
Depending on installation, important audio annunciations such as radar altimeter or autopilot disconnect
will come over the speaker even if it is not selected, while other unswitched, but muted inputs, such as GPS
alerts, will only be present if the SPR button is selected. Consult your professional avionics installer for
these important configuration details.
Unswitched
Input
Hear in
Fail Safe
(Pilot)
Hear in
Crew Headset
Hear in SPR
1
Yes
Yes
Yes
2
No
Yes
Yes
3
No
Yes
When SPR selected
4
No
Yes
When SPR selected
PS Engineering
PMA450 Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-450-0000
Page 3-4
Rev. 6, Dec. 2015
Additional navigation aid or other audio sources can be selected using the LCD menus.
Press the bottom line select
RADIO → SWITCHED INPUTS, →
and desired audio source.
NOTE: Switched Inputs can be renamed at the configuration set up. See §
3.13
for more information.
In
SPLIT
mode, only the pilot will hear selected navigation audio.
3.6 Speaker Amplifier (7)
To activate the PMA450 cockpit speaker output, press and hold the bottom line-select button (SPR) for one
second or until SPR appears in the display.
In “Split Mode” all audio that the pilot hear will also be present in the speaker.
Unswitched audio #1 & #2, (the inputs dedicated to autopilot disconnect, altimeter warning, etc.) will come
through the speaker regardless of the speaker button position.
When a cell phone call is active, the selected radio audio is removed from the speaker.
Depending on installation, important audio annunciations such as radar altimeter or autopilot disconnect
will come over the speaker even if it is not selected, while other unswitched, but muted inputs, such as GPS
alerts, will only be present if the SPR button is selected. Consult your professional avionics installer for
these important configuration details.
Unswitched
Input
Hear in
Fail Safe
(Pilot)
Hear in
Crew Headset
Hear in SPR
1
Yes
Yes
Yes
2
No
Yes
Yes
3
No
Yes
When SPR selected
4
No
Yes
When SPR selected