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Old 04-16-2018, 10:28 AM
SR2500 SR2500 is offline
Join Date: Apr 2011
Location: Colorado
Posts: 119
Default RS232 Feed

I've searched but can't seem to find an answer. I have an RS232 feed coming from my KLX-135A to my Tru Trak ADI. However, I didn't allow for a feed to my Tru Trak Digitrak. Can I simply split the feed from the KLX-135A and use it for the ADI and Digitrak? Simple Solder Sleeve splice would be easy.
Jerry Folkerts
Jerry Folkerts
Pietenpol, built and sold
Cygnet SF-2A, built and sold
Cygnet SF-2A, refurbished and sold
Murphy Super Rebel, built and flying
The Pedal RV, designed and built
Vans, next build
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Old 04-16-2018, 10:39 AM
TShort TShort is offline
Join Date: Jan 2005
Location: Indianapolis, IN (KUMP)
Posts: 829

I'm far from an electronics expert, so I can't answer to the ins and outs of splitting it.

However, when I first bought the -10 there was an issue with the RS-232 feed to my Digiflight II, and after some research and discussion I split the feed just like you mentioned.

It worked just fine.

That's my "n" of 1, FWIW.
Thomas Short
KUMP - Indianapolis, IN
RV-10 N316JS bought / flying
RV-8 wings / fuse in progress ... still
N329TS (had it, lost it, looking for new number)
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Old 04-16-2018, 12:09 PM
Noah's Avatar
Noah Noah is offline
Join Date: Jun 2007
Location: Rhode Island
Posts: 916

Yes you can. I feed 3 RS-232 GPS inputs from one GPS using a terminal strip with no problems. At higher baud rates, you need to be careful with noise / interference / shielding / twisting wire, but not with lower baud rates as I understand it.
Highest Regards,

Noah F, RV-7A

All men dream, but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous menÖ for they may act their dream with open eyes, to make it possible. -T.E. Lawrence
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Old 04-16-2018, 12:15 PM
BobTurner BobTurner is offline
Join Date: Dec 2011
Location: Livermore, CA
Posts: 5,448

Generally speaking, yes, you can split one out into several inís. Because each input does consume some power, and the out can only supply so much, there is a limit. But most RS232 outs can drive two inputs; some can drive three; etc. Of course all of these inputs will be at the same format and baud rate.
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