Specifications

PS Engineering
PMA7000M-S Series Audio Selector Panel and Intercom System
Civil Air Patrol Version Installation and Operator’s Manual
200-072-0004 Page 2-10 Rev. 4, Sept. 2000
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 µVolts applied.
3. Connect the marker antenna and verify proper operation.
2.10.2 Receiver Sensitivity
Although the PMA7000M-S meets FAA TSO-C35d sensitivity specifications, the sensitivity of
the receiver has been adjusted to meet real world requirements (150µV and 430µV, soft). This
will usually eliminate the need for the avionics 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.
2.11 Final Inspection
Verify that the wiring is bundled away from all controls and no part of the installation interferes
with aircraft 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 accordance 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 log book entry, FAA Form 337, weight and balance computation and other
documentation as required. 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.