Operating instructions

Page 10 PMA9000EX Pilot Guide Revision 5
Pushing the small data knob will activate the option, and exit the
menu, or, the option will be selected automatically after five (5) sec-
onds.
The menu function will always come up on the display with last used
function first.
4.1 Cockpit Speaker
The speaker (SPR) can be turned on or off in the same manner as the
MKR from the primary menu. This control will place all selected au-
dio on the cockpit speaker when this switch is selected. Except for the
unswitched audio, the speaker amplifier is not active in the "Split
Mode”.
Unswitched audio, (the inputs dedicated to autopilot disconnect, al-
timeter warning, etc.) will come through the speaker regardless of the
speaker button position.
Depending on installation, important audio annunciations such as ra-
dar 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.
4.2 Standard/Alternate Intercom Function
Alternate Intercom Function is a mode that allows everybody to talk
on the intercom, but the passengers do NOT hear the aircraft radios.
In addition, when the aircraft radios are active, the crew does not hear
the passengers’ microphones, although passengers continue to hear
each other. This function is selected through the ECAPS system.
4.3 Utility Jack (9)
The 2.5-millimeter (3/32”) jack on the front of the PMA9000EX has
three distinct functions:
•
Music input
• Advisory audio input
• Wired Cell phone input
4.3.1 Front Jack Music Input
When used as a music input, the front panel jack is treated as Music
#1. However, thanks to the PMA9000EX controls, it can be