Yes, you are missing something.
The IGC spec is actually a suggestion, not a requirement.
In order to provide all the EW functionality, all 8 wires on the
Ethernet RJ connector are used (yeah it isn't Ethernet either) and it
is impossible to comply with the IGC wiring standard.
Unfortunately there are a very limited number of types of compact,
cheap, easy to assemble and use, multiway miniature connectors available.
We use the same connectors in the B400/B500 systems. In our case
there's nothing powered up that you can plug in by mistake (power is
on SOCKETS or screw terminals as it really ought to be) and our pins
1 and 2 and 7 and 8 happen to comply with the IGC polarity standard.
I can assure you that this was accidental.
At 05:04 PM 20/05/2010, you wrote:
1) IGC Flight Recorder specifications require pin 1&2 and pin 7&8
on the RJ-45 connector of a IGC compliant cable to be in parallel...
http://www.fai.org/gliding/system/files/tech_spec_gnss.pdf#page=32
2) There is no such thing as a "FLARM cable" or "FLARM connector".
FLARM has never shipped any assembled cables.
You define the connections and connector on the cable required to
power the FLARM or use data from it. This makes that cable in the
aircraft a "FLARM" cable in my book even though you may not ship it.
Upon some further investigation: DON"T PLUG a VOLKSLOGGER cable into
an EW either.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments since 1978
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
email: [email protected]
website: www.borgeltinstruments.com
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