Author Topic: Decoder Identification  (Read 280 times)

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johnh35

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Decoder Identification
« on: June 20, 2026, 04:36:19 PM »
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Looking to identify this decoder without removal it from my Atlas Classic GP9. I installed it many moons ago but cannot remember and there are no markings on the top side.

EspeeGoldenState

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Re: Decoder Identification
« Reply #1 on: June 21, 2026, 12:27:09 AM »
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Looks like a TCS AMD4  to me with the orange lights.
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Bendtracker1

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Re: Decoder Identification
« Reply #2 on: June 21, 2026, 08:03:31 AM »
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"Looks like a TCS AMD4  to me with the orange lights."
That would be my guess as well.
The two motor tab slots and the multiple pads on the rear also looks like a TCS.
Is there a reason you cannot place it on the programming track and enable a "READ" to find the Mfg code?

peteski

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Re: Decoder Identification
« Reply #3 on: June 21, 2026, 08:18:02 AM »
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Yes, the board layout looks similar to the current TCS ASD4 https://drupal.tcsdcc.com/1279 . But that one is a newer version of the decoder with surface mount LEDs while the older version has standard 3mm LEDs with amber colored lenses.  Yes, the best way to determine the manufacturer would be to read its CV8 value on programming track, then look up that value in https://www.nmra.org/sites/default/files/appendix_a_s-9_2_2.pdf
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Lackawannae8

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Re: Decoder Identification
« Reply #4 on: July 10, 2026, 10:42:43 AM »
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Read cv8 and search the number it gives you
Use this page for reference
https://ncedcc.zendesk.com/hc/en-us/articles/200545039-Manufacturer-ID-listing-The-Value-listed-in-CV8
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peteski

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Re: Decoder Identification
« Reply #5 on: July 10, 2026, 12:02:51 PM »
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Read cv8 and search the number it gives you
Use this page for reference
https://ncedcc.zendesk.com/hc/en-us/articles/200545039-Manufacturer-ID-listing-The-Value-listed-in-CV8

Not sure how current the NCE list is. The link I posted earlier is directly to the most updated NMRA document. Of course this is irrelevant for older decoders like digitrax NCE  or TCS among few.
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