PS Engineering PMA9000EX Installation Manual - Manual (Page 15)

PS Engineering
PMA9000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-920-0000 Page 2-8 Rev. 9, Jan. 2011
A remote momentary, normally open (NO) push button switch may be installed if desired to activate the
Recording System playback remotely. This switch can be located anywhere in cockpit convenient to the
pilot's reach. The switch should be connected to pin 22 of J2 of the PMA9000EX, and ground.
2.6 Marker Beacon Installation
2.6.1 Marker Antenna Installation
A marker beacon antenna, appropriate to the type and speed of the aircraft, is required (not included).
Refer to aircraft and antenna manufacturer's installation instructions, as well as AC43.13 -2A (or later
revision), Chapter 3, for information on proper antenna install ation techniques. The marker beacon an-
tenna must be mounted on the bottom of the aircraft.
2.6.2 External Marker Lights
For installations that require external marker beacon lights, there are three outputs that can drive 12 -Volt
lamps only. The external output lamps are driven high (typically +9 VDC 1.5 VDC unloaded, at MAX
brightness) when active. Maximum source current per lamp is 125 mA. Voltage varies with photocell
dimming.
2.6.3 Middle Marker Sense
A Middle Marker Sense output signal is available from the PMA9000EX to flight control systems. This
function will not operate during the test mode. This output will go to +4.5 VDC (  1.0 VDC) when a valid
Middle Marker signal is received. This output is J1, pin 39.
2.7 Adjustments
The PMA9000EX is factory adjusted to accommodate the typical requirements for most aircraft configur a-
tions. There are three adjustments in the top cover that allow the installer to tailor the specific functions.
Figure 2-2- PMA9000EX Adjustments, top cover
Front
of unit
NOTE:
If top cover is removed
for ANY reason, you
MUST replace the cover
screws with the proper
length, otherwise damage
will result.
Shorter Screw