PS Engineering
PMA7000BT Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-780-0204
Page 2-13
May 2015
14. Push the SPR button. Verify that all selected audio is heard in the cockpit speaker. Verify that the au-
dio mutes when the mic is keyed.
15. Verify that the appropriate LED in the lower right side blinks when either push to talk is keyed.
16. Verify proper Intercom system operation in the A
LL
, I
SO
and C
REW
modes (see Table 3-1).
17. 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 equipment
on the aircraft.
2.11.2.1
Marker Checkout
1.
Connect a ramp generator at the antenna end of the marker coax. With the unit under test in HI sensi-
tivity, verify that a 160
V, modulated 95% with 1300 Hz, signal will illuminate the amber (M) marker
light, and that marker audio is present in the headphones when the Marker Audio (M) push-button has
been depressed. Select SPR for speaker to verify marker audio availability on the cabin speaker. Verify
that the white (I) and blue (O) lights will illuminate within
3dB of the amber lamp, with 3000 HZ
and 400 Hz applied, respectively.
2.
Repeat with the unit in LOW sensitivity, with 430
Volts applied.
3.
Connect the marker antenna and verify proper operation.
2.11.3 Receiver Sensitivity
Although the receiver meets FAA TSO-C35d sensitivity specifications, the sensitivity has been adjusted to
meet real world requirements (150
V and 430
V, soft). This will usually eliminate the need for the avion-
ics shop to reduce the sensitivity in the field so as to prevent early detection of the marker beacons. If your
particular installation requires more or less sensitivity, see adjustment section 2.6, and figure 2-1.
2.12
Bluetooth Interface Checkout
Place Bluetooth device into the “discovery” mode. Select the PMA7000BT on the device and enter
PIN
code “0000”, if required.
Play music from the device and verify pilot & copilot can hear music from the Bluetooth device. Hold
down the ICS button (longer than 2 seconds) and verify passengers can hear the Bluetooth music also.
Make a phone call. When in the ALL mode, the Bluetooth telephone conversation will be connected to all
six headsets. In ISO, only the pilot will have access to the Bluetooth phone call. In CREW, only the pilot &
copilot will have access to the Bluetooth phone call.
Disconnect the phone call and verify music returns to the system.
2.13
Final Inspection
Verify that the wiring is bundled away from all controls and no part of the installation interferes with air-
craft control operation. Move all controls through their full range while examining the installation to see
that no mechanical interference exists. Verify that the cables are secured to the aircraft structure in accord-
ance with good practices, with adequate strain relief. Ensure that there are no kinks or sharp bends in the
cables and coaxial cables. Verify that the cables are not exposed to any sharp edges or rough surfaces, and
that all contact points are protected from abrasion.
Complete logbook entry, and other documentation as required such as FAA Form 337, weight and balance
computation. Sample text for FAA Form 337, and instructions for continuing airworthiness can be found in
Appendix F.
Return completed warranty registration application to PS Engineering, or register online at www.ps-
engineering.com/support.shtml .