Home' RTCA Documents for Review : DO-262D Contents 12
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Bench Tests and Performance Verification
Bench test and/or analysis procedures are specified in Section 2.4, and provide a
laboratory means of demonstrating compliance with the requirements of Section 2.2 .
Test results may be used by equipment manufacturers as design guidance for
monitoring manufacturing compliance and, in certain cases, for obtaining formal
approval of equipment design.
Installed Equipment Tests and Performance Verification
The installed equipment test and/or analysis procedures and their associated limits
are specified in Section 3.0. Successful completion of bench and environmental test
procedures is a precondition to completion of the installed equipment tests. In certain
instances, however, installed equipment tests may be used in lieu of bench test
simulation of such factors as power supply characteristics, interference from or to
other equipment installed on the aircraft, etc. Installed-equipment tests are normally
performed under two conditions:
With the aircraft on the ground and using simulated or operational system inputs
b. With the aircraft in flight using operational system inputs appropriate to the
equipment under test
Test results may be used to demonstrate functional performance in the intended
Operational Tests and Performance Verification
Operational tests and/or analyses are specified in Section 4.0. These test procedures
and their associated limits are intended to be conducted by operating personnel as
one means of ensuring that the equipment is functioning properly and can be reliably
used for its intended function(s).
DEFINITIONS OF STANDARD TERMS USED IN THIS DOCUMENT
Aeronautical Mobile Satellite (R) Services AMS(R)S: Safety-related services
offered by a satellite communications system for the purpose of enhancing the safety
and regularity of flight.
Network (ATN): A
telecommunications network for aeronautical communications which comprises
application entities and communication services which allow ground, air-to-ground and
avionics data subnetworks to interoperate by adopting common interface services and
protocols based on the OSI reference model.
Air Traffic Management (ATM): An evolving means of controlling aircraft in less
structured airspace based heavily on automatic communication of data between
controllers and pilots with only minimal reliance on voice communications.
Average Output Power: For satellite systems using TDMA format, the average power
output is be defined as the average power over any TDMA frame, with the specified
number of carriers active in a single TDMA time slot. The average power output is
defined with respect to a TDMA frame, under the assumption that a carrier is active for
only a single timeslot in each frame. If a carrier is active for more than a single
timeslot in the frame, the combined duration of all active timeslots is used. For
satellite systems using a CDMA format, the average power output is the average
power over the length of the CDMA code, measured with the specified number
channels active throughout that interval. For simple FDMA system in which the
channel bandwidth is dedicated to a single user, the average shall be over one
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