PS Engineering PMA5000EX Installation Manual - Manual (Page 15)

PS Engineering
PMA5000EX Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-550-0100 Page 2-9 Rev. 1 Jan. 2011
2.9 Post Installation Checkout
After wiring is complete, verify power is ONLY on pins 8 and 9 of the J2 and airframe ground on J2 con-
nector pins 10 and 11. Failure to do so will cause serious internal damage and void PS Engineering's
warranty.
2.10 Unit Installation
To install the PMA5000EX, gently slide the unit into the mounting rack until the hold -down screw is en-
gaged. While applying gentle pressure to the face of the unit, tighten the 3/32" hex-head in the center of
the unit until it is secure. DO NOT OVER TIGHTEN.
CAUTION
Apply steady pressure to the bezel while screwing the unit into the tray to ensure even seating of the unit
and connectors.
WARNING
Do not over-tighten the lock down screw while installing the unit in tray. Internal damage will result.
2.11 Operational Checkout
2.11.1 Audio Panel Test
NOTE
The IntelliVox® is designed for ambient noise levels of 80 dB or above. Therefore some clipping may oc-
cur in a quiet cabin, such as without the engine running, in a hangar. This is normal .
1. Apply power to the aircraft and avionics.
2. Plug headsets into the pilot, copilot, and occupied passenger positions.
3. Verify fail-safe operation by receiving and transmitting on com 1 from the pilot position, with the
audio panel power off. The Com audio will be present in one ear cup only.
4. Switch on the unit by pressing the volume (VOL) knob.
5. Check intercom operation.
6. Push the Com 1 Xmt select button (lower row).
7. Verify that both of the Com 1 buttons light. Verify that transmit button LED (Light Emitting Diode)
near the mic selector is not blinking. If the LED is blinking, stop testing and troubleshoot the micr o-
phone PTT installation.
8. Verify proper transmit and receive operation from th e copilot position, noting that the copilot PTT
switch allows proper transmission on the selected transceiver. Verify that the Com 1 Xmt button
blinks when transmitting.
9. Verify that pushing the C OM 2 button causes the button to illuminate, and the Com 2 r eceiver to be
heard. Verify operation on Com 1 from the pilot position.
10. Repeat for Com 2
11. Press and hold the Com 1 Xmt button. While holding the Com 1 button, press the Com 2 Xmt button.
This places the unit in “split Mode;” Verify that the pilot can tran smit and receive on Com 1, while
the copilot transmits and receives on Com 2.
12. Verify proper operation of all receiver sources by selecting them using the appropriate button. The
button illuminates to show which source is in use.
13. Verify that the appropriate LED in the lower button row blinks when either push to talk is keyed.
14. Verify proper Intercom system operation in the A LL , I SO and C REW modes (see Table 3-1).
15. Verify that the audio selector panel system does not adversely affect any other aircraft system by sys-
tematically switching the unit on and off, while monitoring the other avionics and electrical equi p-
ment on the aircraft.