DCC Decoder Test System

DCC Decoder Test System

DCC Track Protocol Analyzer  (Zip file) (Track Protocol Analyzer• requires additonal hardware)


The Conformance and Inspection Committee has developed several test devices for the purposes of assisting both the manufacturers and the committee in performing our tests. Please note that these tools are only aids. The NMRA Standards and Recommended Practices define the requirements, these results of these tools are but one factor in the testing process.

Decoder System Test Information

The NMRA developed the DCC Decoder Test Board and accompanying software (referred to below as the DCC Decoder Test System) as part of it's Conformance testing process for DCC Decoders. The DCC Decoder Test System is one component of the NMRA's overall DCC Decoder testing process. It is used to test a mobile or accessory DCC decoder, and when properly used, it verifies that the decoder meets the baseline NMRA DCC standards S-9.1.1 and S-9.2.

The Decoder Test System is designed to utilize older PC components that many users already have in excess quantity. The Decoder Test Board is installed in an empty ISA slot in an IBM compatible PC, and the accompanying software runs on MS-DOS or in the DOS box of a Microsoft Windows 95 system. More details on the specific requirements can be found in the Decoder Test Board Manual below.

Packet Script Software and Scripts

  • New SENDER V4 Test Scripts (Not yet available)

For more information on the current version of any test tool please send email to tech-chair [at] nmra.org (Conformance and Inspection Manager).

Copyright (c) 1995-2014 National Model Railroad Association. All Rights Reserved.
Last Updated: September 2019

National Model Railroad Association, Inc.
P.O. Box 1328, Soddy Daisy TN 37384-1328
Phone: (423) 892-2846 - Fax: (423) 899-4869
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