Revision Date | July 10, 2017 || Document Number | UM-E71-308-01 || Rev C
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7.3 Grounding and Bonding
Electrical grounding and bonding of the CWAP unit follow standard avionics industry design practices,
ensuring proper grounding for electrical safety and for Electromagnetic Interference (EMI) control and
compliance.
7.4 Workmanship
Workmanship, including ANSI/IPC-A-620 soldering, is designed to meet ANSI/J-STD-002 and RTCA/DO-
254.
7.5 Safety
The CWAP is designed to meet the safety requirements of RTCA/DO-254.
7.6 Protective Devices
The CWAP contains a power line fuse that provides electrical separation between the airplane AC power
and the CWAP system in the event of a circuit upset per the recommendations of RTCA/DO-254. All
input/output signals within the CWAP contains ESD (TVS) protective Diodes and/or isolation transformers
that will provide protection from external noise/ESD/lightning. The protection devices have fail-safe
features, ensuring that any failure does not create hazardous condition to the CWAP.
The CWAP has a dual output temperature sensor to protect the internal electronics from an over-
temperature or under-temperature condition. Additionally, a separate temperature sensor is in place to
enable/disable the unit based on low ambient temperatures (below -20ºC).
