programming DH123D question

Geep_fan Nov 17, 2010

  1. Geep_fan

    Geep_fan TrainBoard Member

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    hello

    just thought I would ask a question I have been unable to solve on my own.


    I have an Atlas GP7 I installed both a DH123D and a beacon into a few months back. since I had no idea on what to program the values to I simply soldered both the forward and reverse headlight leads to the resistor. I figured that it would stay on in either direction that way. Fast forward a few months and I tried programming the beacon to flash. I tried every combination from digitrax's site and the only thing it does now is get brighter in reverse and dimmer in forward. I want to reinstall the headlights to this unit using one lead and setting up the headlights to stay on all the time in both directions and to have the beacon flash using the other lead. is there a way to setup the DH123 to do this?

    because when I followed the directions on digitrax's site, it had no effect on this particular setup. my GP35 I could make the beacon flash using the settings I found, but not on this one. does hooking up the light to both leads have something to do with this?

    I was also wondering if someone could point me out which CV's to change so that the lights will stay on no matter what direction the unit is in.

    thanks a bunch


    geep_fan
     
  2. Cjcrescent

    Cjcrescent TrainBoard Member

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    Not there isn't to my knowledge. The DH123's are 2 function only. Speed and headlights only. No flashers, ditch light or such.
     
  3. Geep_fan

    Geep_fan TrainBoard Member

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    my GP35 has a DH123D in it and I could program its effects.
     
  4. CSX Robert

    CSX Robert TrainBoard Member

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    I don't quite understand the description of your wiring. Do you have two headlights wired to one function lead? One headlight wired to two function leads? What is the beacon wired to? Also, is the beacon an LED or incandescent bulb, and what about the one on the loco that you got to work? The reason I ask this is some Digitrax lighting effects work good with incandescent bulbs but not LED's.
     
  5. GraphiteHemi

    GraphiteHemi New Member

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    If I understand correctly, you:

    -have a 2 function decoder
    -want constant on fwd/rev headlights
    -want constant on beacon

    If the decoder is a FX or FX3, you should be able to.

    Hook up the fwd/rev lights to the white function wire with appropriate resistor(s). Hook the beacon light to the yellow function wire with the appropriate resistor.

    Program:
    CV49: 032 < non-directional on
    CV50: 038 < non-directional rotary beacon
    CV61: 001 < enable strobe config

    Let me know if that works for you.
     
  6. Geep_fan

    Geep_fan TrainBoard Member

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    thanks graphite!

    I got the beacon to work, but for some reason only in reverse. if I put it in forward, the light goes out.

    the unit doesn't move anymore either but I'm putting that to my own fault, I think I broke a solder connection when I pulled the stuff out to snip the white wire a bit shorter. .


    I'll work with it some more after I get back from school tomorrow.
     
  7. GraphiteHemi

    GraphiteHemi New Member

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    Only the beacon goes out in forward? But the headlights are always on? Maybe I have the wrong value for CV50.
     
  8. Geep_fan

    Geep_fan TrainBoard Member

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    no headlights yet. still haven't installed them. its just the beacon right now.

    I did some fiddling and found that the wire going to the bottom of the motor came undone. great, more stuff to fix. I'll be back to this after I fix the motor.
     
  9. GraphiteHemi

    GraphiteHemi New Member

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    Ok, I know the problem.

    Assuming you are wiring the lights as I stated above (critical when programing the cv's):

    CV33: 001 <- should be defualt, white on forward
    CV34: 001 <- white on reverse

    CV35: 002 <- yellow on when F1 pressed (could be any 'F' you want, just change the CV# you are writing. F2 = CV36, F3 = CV37, etc....)

    The problem was that the output was still being controlled by direction, even tho the effect was non-directional.
     

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