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DCC decoder in a OMI locomotive

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  • Member since
    November 2009
  • 113 posts
Posted by fondo on Monday, March 7, 2011 8:16 AM

Thanks Randy, what I did was to search for continuity with a voltimeter with the two led's installed, and I founded the leg that should be blue cable. So I use it for one leg for one ditch light(another led, with 990ohm resistor) and the green cable to the other leg of the ditch light, CV51 with 106 value, and CV52 with 107 value, CV63 with 64 value but this didn't work. I sent an email to digitrax support already, so when I get news I'll post them here!

THanks for all your time! and quick responses

  • Member since
    February 2002
  • From: Reading, PA
  • 30,002 posts
Posted by rrinker on Monday, March 7, 2011 11:45 AM

 LEDs are polarity senstive - the blue wire is + on the decoder, so make sure you have the LED hooked up the right way. A valid 'blue' wire point would be one side of either the front or rear LEDs that are soldered to the board. I'm not so certain the green wire coming from that 9 pin connectors is THE green wire like you'd see on a regular wired decoder. The second connector (or in this case only one) on other Digitrax sound decoders provides the connection for the speaker the capacitor, and the chuff cam (yes, even the diesel decoder has a chuff cam connection, because you can use that decoder in a steam loco and load the appropriate sounds).

                 --Randy

 


Modeling the Reading Railroad in the 1950's

 

Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.

  • Member since
    November 2009
  • 113 posts
Posted by fondo on Monday, March 7, 2011 11:50 AM

Randy, thanks for all your support. Yes, the blue common is the positivie(+) in the led. I have just received the answer from digitrax suppot, and the solution is the following: I use led with 660 resistor. The two led are draw by me as circle with an X, something like this (X)

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