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
2.
Repeat with the unit in LOW sensitivity, with 430
µ
Volts 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 sensi-
tivity of the receiver has been adjusted to meet real world requirements (150
µ
V and
430
µ
V, soft). This will usually eliminate the need for the avionics shop to reduce the sen-
sitivity in the field so as to prevent early detection of the marker beacons. If your particu-
lar 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 in-
terferes 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 ade-
quate 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 continu-
ing airworthiness can be found in Appendix F.
Return completed warranty registration application to PS Engineering.
