EDIATec ECW100 Operating Manual - Page 14

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The radio transmission protocol employed places no limit on the number of units that

may be operated within a given range. However, an increasing number of units within

range are associated with a reduction in the probability that a single coded signal will be

received ('graceful degradation'). The probability is small that subsequent signals will not

be received from the same transmitter. ECW100 is designed to receive and process sig-

nals from up to 50 aircraft within range. A high number of ECW100 units within range

have no effect on range.

The transmitter has no effect on what the receiver in the other aircraft does with the

data. It is possible that this data may be captured and stored by other aircraft, or by

ground stations, or used for other purposes. This opens up a range of possibilities, some

of which may be in the pilot's own interest, (e.g. automated generation of an sailplane

launch logging system, aircraft tracking, last position recovery), while others may not be

(e.g. detecting tailing of other aircraft, airspace infringements, failure to take avoiding

action prior to a collision). When ECW100 makes a transmission, the signal also bears

identification. The user can — even though this is not recommended — configure the unit

so that identification is generated randomly and alters at one-minute intervals, making a

back-trace difficult.

Operation of ECW100 is limited to non-commercial day VFR flights. ECW100 may not be

used for navigational purposes or aerobatics.

At present ECW100 has not been certified or tested in line with the usual aviation proce-

dures (e.g. DO-160E). The ECW100 software development is roughly in-line with Level E

of DO-178B; i.e. a partial or total failure of ECW100 will have no effect upon the safe

operation of the aircraft, nor does it increase crew workload.

Until further notice ECW100 may not be used in the USA or Canada without written au-

thority of EDIATec GmbH, or in aircraft that is registered and/or insured in the USA or

Canada. Likewise, operation of ECW100 is forbidden in aircraft in which one or more of

the occupants resides in or is a citizen of the USA or Canada. Likewise, use of ECW100 is

forbidden if the aircraft concerned takes off from, makes an intermediate or final landing

in the USA or Canada.

EDIATec GmbH its associates, development team, suppliers, manufacturers and data

suppliers accept no responsibility for any damage or claims that may arise from use of

ECW100.

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