Avionics News February 2013 - 31
have to have a couple of different
wires in a cable assembly, twisting
them with varying lays between the
1-2 data and 3-4 data reduces interference between them.”
The point, according to Bachleda, is that every system, avionics
or otherwise, has different requirements. And different cables meet
them. There are shielded twisted
pairs, shielded untwisted, untwisted in Ethernet, coax, triax, quadax
and others. And just to make the
job interesting, some systems like
TCAS, require phase matching.
“Standard TCAS has eight
cables; four to the upper antenna
and four to the lower antenna,”
Bachleda said. “From each antenna, the signal must be within a
certain wavelength, and it can only
be shifted 135 degrees, for TCAS,
between the cables. Usually, 135
degrees translates to 2 to 3 inches
of cable. And then you must take
into account that no cable is going
to be 100 percent from the manufacturer. So in addition to length
difference, you have to consider
the potential for slight deformity in
the conductor and in the dielectric.
Anything beyond 135 degrees af-
fects the reliability of the signals
and, in turn, the accuracy or reliability of the TCAS.”
Fortunately, the advent of digital
avionics has made one part of the
design process easier. A computerbased network analyzer plugs into
the harness and measures all of
these parameters, “and we provide
the test report with the cables to
show they meet requirements,”
Stuckart said. Making sure the
wires, cables and connectors are
appropriate to their environment
Continued on following page
Passengers Can Now
Follow the Action on a
Moving Map, Wirelessly
Customizable graphics
Up-to-the-minute flight data
Detailed terrain maps
Nearest city information
Get a better sense of aircraft position and surroundings. The customizable Moving Map
from Flight Display Systems shows the aircraft location with highly detailed graphics
and up-to-the-minute flight data. Using a third-party wireless router, maps can also be
viewed on iPads.
Contact your avionics dealer or go to
http://www.flightdisplay.com/wireless
+1 (800) 213-2954
avionics news
•
february
2013
31
http://www.flightdisplay.com/wireless
Avionics News February 2013
Table of Contents for the Digital Edition of Avionics News February 2013
Point of Communication
AEA Now
The View From Washington
International News and Regulatory Updates
Portable Powerhouses, VHF to GPS
Member Profile
Wires, Cables, & Connectors
Avionics News Through the Years
The Place To Be
A Conversation With...
Member Profile
AEAviators
Develop Your Best Salesperson
Business Basics
Trailblazer
What's New
Marketplace Classifieds
Before & After
Avionics News February 2013 - Intro
Avionics News February 2013 - Cover1
Avionics News February 2013 - Cover2
Avionics News February 2013 - 1
Avionics News February 2013 - 2
Avionics News February 2013 - 3
Avionics News February 2013 - Point of Communication
Avionics News February 2013 - 5
Avionics News February 2013 - AEA Now
Avionics News February 2013 - 7
Avionics News February 2013 - 8
Avionics News February 2013 - 9
Avionics News February 2013 - 10
Avionics News February 2013 - 11
Avionics News February 2013 - 12
Avionics News February 2013 - 13
Avionics News February 2013 - The View From Washington
Avionics News February 2013 - 15
Avionics News February 2013 - International News and Regulatory Updates
Avionics News February 2013 - 17
Avionics News February 2013 - 18
Avionics News February 2013 - 19
Avionics News February 2013 - Portable Powerhouses, VHF to GPS
Avionics News February 2013 - 21
Avionics News February 2013 - 22
Avionics News February 2013 - 23
Avionics News February 2013 - Member Profile
Avionics News February 2013 - 25
Avionics News February 2013 - 26
Avionics News February 2013 - 27
Avionics News February 2013 - Wires, Cables, & Connectors
Avionics News February 2013 - 29
Avionics News February 2013 - 30
Avionics News February 2013 - 31
Avionics News February 2013 - 32
Avionics News February 2013 - 33
Avionics News February 2013 - Avionics News Through the Years
Avionics News February 2013 - 35
Avionics News February 2013 - The Place To Be
Avionics News February 2013 - 37
Avionics News February 2013 - 38
Avionics News February 2013 - 39
Avionics News February 2013 - 40
Avionics News February 2013 - 41
Avionics News February 2013 - A Conversation With...
Avionics News February 2013 - 43
Avionics News February 2013 - Member Profile
Avionics News February 2013 - 45
Avionics News February 2013 - 46
Avionics News February 2013 - 47
Avionics News February 2013 - AEAviators
Avionics News February 2013 - 49
Avionics News February 2013 - Develop Your Best Salesperson
Avionics News February 2013 - 51
Avionics News February 2013 - 52
Avionics News February 2013 - 53
Avionics News February 2013 - Business Basics
Avionics News February 2013 - 55
Avionics News February 2013 - 56
Avionics News February 2013 - 57
Avionics News February 2013 - Trailblazer
Avionics News February 2013 - 59
Avionics News February 2013 - 60
Avionics News February 2013 - 61
Avionics News February 2013 - 62
Avionics News February 2013 - 63
Avionics News February 2013 - 64
Avionics News February 2013 - 65
Avionics News February 2013 - What's New
Avionics News February 2013 - 67
Avionics News February 2013 - 68
Avionics News February 2013 - 69
Avionics News February 2013 - Marketplace Classifieds
Avionics News February 2013 - 71
Avionics News February 2013 - Before & After
Avionics News February 2013 - Cover3
Avionics News February 2013 - Cover4
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