PS Engineering
PMA6000B Audio Selector Panel and Intercom System
Installation Manual
200-066-0200
Page 2-7
Rev 6, Feb. 2013
2.4.11 Intercom
All mic and headphone jacks must have insulating washers, the cable must be Teflon coated, twisted-
shielded wire, and the shield must only be connected to the ground return wire
only
at the intercom con-
nector.
Note: A custom wiring harness is available from PS Engineering, along with 4-place jack kits.
Visit
www.ps-engineering.com
2.5
Adjustments
The PMA6000 is factory adjusted to accommodate the typical requirements for most aircraft configurations.
There are three adjustments however, that will allow the installer to tailor the specific functions. See section
2.4.8.1 for disassembly instructions.
Adjustment
Clockwise Results In
Cabin Speaker Level
Increase Speaker Volume
Marker Beacon Level Decrease Marker Volume
MKR High Sense Increase sensitivity
MKR Low Sense Increase Sensitivity
To make the necessary adjustments, use a small jeweler's slotted screwdriver.
Figure 2-3 Adjustments
2.6
Marker Antenna Installation
Refer to aircraft and antenna manufacturer's installation instructions, as well as AC43.13-2B (or later revi-
sion), Chapter 3, for information on proper antenna installation techniques. The marker beacon antenna
must be mounted on the bottom of the aircraft.
2.7
Communications Antenna Installation Notes
For best results while in Split Mode, it is suggested that the one VHF communications antenna be located
on top of the aircraft while the other communications antenna be on the bottom. Any antenna relocation
Speaker
Volume
VR2
MKR Volume
VR912
MKR HI
Sense
VR917
MKR LO
Sense
VR919
