Post Installation Checkout - PS Engineering PM3000 Installation And Operation Manual

This configuration requires a modified external PTT switch plugged into the copilot's mic jack. (See
Appendix A) When the copilot's PTT is depressed, this activates an internal relay that switches the mic
audio to the aircraft radio from the pilot to the copilot.
No built in PTT switch at all.
Two built-in PTT must be installed or two external, modified PTT switches will be required for both the
pilot and copilot. Modifications to the PTT may be required. (See Appendix A)
2.5

Post installation checkout

After wiring is complete, verify power is ONLY on pin 13 of the connector, and airframe ground on pin 1.
Failure to do so will cause serious internal damage and void PS Engineering's warranty.
1. Apply power to the aircraft and avionics.
2. Plug headsets into the pilot, copilot and passenger positions.
3. Verify that the pilot position can transmit and receive with the PM3000 in the OFF position (left
hand knob controls on/off).
4. Push the volume knob to switch the PM3000 on. Rotate the volume clockwise, about half way.
Verify that the Pwr/Xmt light comes on green. If the LED is red, immediately switch off the
avionics, and troubleshoot the PTT installation.
5. Verify that the pilot can transmit and receive on the com transceivers.
6. Verify proper intercom operation for pilot, copilot and passengers. For more information, consult
Section 3.
7. Verify proper transmit and receive operation on the copilot position, noting that the copilot PTT
switch allows proper transmission.
8. Verify proper Intercom system operation in the ALL, CREW and ISO modes.
9. Verify that the intercom system does not adversely affect any other aircraft system by
systematically switching the unit on and off, while monitoring the other avionics and electrical
equipment on the aircraft.
200-193-0000
PS Engineering Incorporated
PM3000
Installation and Operation Manual
Case III
4
Page Rev. 0, May 1998