ad4 pin out cvp products

[surferooal]

I have an old ad4 decoder that was b4 the change to mc and hc revs. Anybody know where I can find a pin out. Someone said that Model Railroad had a series of articals on them, (July1997). Anybody have any ideas.

Thanks

Al

[maxman]

Al:

I basically don't know what you are talking about, as I don't have a clue what an ad4 decoder is.  But I do have the series of articles about building the Easy DCC command control system which started in February 1997. The articles were:

Part 1 (2/1997) - building the command station

Part 2 (3/1997) - constructing the booster

Part 3 (4/1997) - DCC decoder installation tips (used Wangrow, NCE and Digitrax decoders)

Part 4 (5/1997) - Getting the system running

Part 5 (6/1997) - Walkaround throttles for Easy DCC

Part 6 (7/1997) - using accessory decoders

None of these articles appear to contain the information you are looking for.  I do have all the magazines going back to about 1970, so if you can narrow down which issue you think contains the information you need, I'd be glad to look it up.

Regards

ps: did you try contacting CVP directly?

[cacole]

Go to the CVP web site and you can download their documentation for the AD4.

http://www.cvpusa.com

 

[maxman]

Go to the CVP web site and you can download their documentation for the AD4.

http://www.cvpusa.com/

 

The documentation for the AD4 at the CVP website is: http://www.cvpusa.com/doc_center/ad4_manual_2007.pdf

I did find the article that I think you are referencing.  It was called Build a DCC Accessory Decoder and was in the September 1998 Model Railroader.  The article describes how to build an AD4 and an AD4H-K.  It says that the AD4H-K is for heavy duty applications.  There is a figure called AD4 Pin Identification.  I presume that this is what you are looking for.  The pin identifications seem to be different than what is shown on the manual found on the website.  The identifications are as follows [number in (x) is the pin number] :

(1): output 1;  (2): output 2;  (3): output 3;  (4): output 4;  (5): output 5;  (6): output 6

(7): output 7;  (8): output 8;  (9): not used  (10): local input 1;  (11): local input 2

(12): local input 3;  (13): local input 4;  (14): not used;  (15): not used

(16): track input;  (17): track input;  (18): V+;  (19): CD+;  (20): ground

(21): AC input;  (22): AC input

I'm assuming that what they are showing in the figure is an edge connector.  For purposes of orientation it appears that the numbering starts with (1) at the edge of the circuit card  marked with an "A".

Hopefully this is what you needed.

Regards