PS Engineering PMA450 Pilot’s Guide - Manual (Page 3)

202-450-0000 Page 3 Nov. 2014 PMA450 Pilot Guide
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 secon-
dary function is available when
that button is held for more than 1
second. These functions are:

Public Address (PA – middle button)

Speaker (SPR – lower button)
Communications Transmit (XMT) Selection (2)
The PMA450 has four buttons to select communica-
tions transceiver functions, two each C1 and C2. C1
refers to VHF COM 1, and C2, to VHF COM 2. To
select a VHF COM for transmit; push the lower but-
ton in the XMT (transmit) section. The radio is auto-
matically selected to receive incoming radio calls
when the XMT is selected. With a PMA450, you
will never transmit on a radio that you are not receiv-
ing.
To select a VHF COM radio to listen only, push the C1 or C2 button in the
RCV (Receive) section.
The PMA450 will remember when you have selected a radio for receive
only, and then switch to it for transmission and switch back to receive only.
Split Mode
In the SPLIT mode, the pilot position transmits and
receives on COM 1, and the copilot can transmit and
receive on COM 2 independently.
Pressing the C1 and C2 XMT buttons together (above
the └SPLIT┘ legend), puts the PMA450 into SPLIT
com mode.

The intercom is deactivated automatically when
you enter SPLIT mode.
o Push the ICS button until the green LED lights
up CRW to restore intercom between pilot and copilot.
o Intercom between crew and passengers is not possible in split mode
The spatial component of IntelliAudio ® is defeated in split mode.
To exit SPLIT mode, simply select C1 or C2 XMT button