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Atlas #544099 and #447399 DCC Decoders 4
Atlas Model Railroad Co., Inc.
unwanted shorts,
There must be NO electrical contact between the motor
contacts and any part of the frame
Place the locomotive (without its plastic body) on your DCC
programming track and read back the locomotive's address from the
decoder. If the decoder is properly installed, you will be able to read
back the factory pre-set address 03. If your system does not support
reading decoder properties, observe carefully the decoder's behavior
while on the low current programming track. Each time you try to
program the decoder you can see the acknowledgement that is sent by
the decoder in the form of a brief and minor jerk of the locomotive. A
successful acknowledgement means that you have installed the decoder
correctly.
Remove the locomotive from the track and, if necessary, correct any
installation errors. Once you have successfully programmed the
decoder, reinstall the plastic body and retest the locomotive on the
programming track. If this test is successful, the locomotive is ready to
use.
Programming Atlas #544099 and #447299
DCC Decoders
Atlas #544099 and #447299 DCC decoders support service mode and
also operations mode programming. Using these programming
methods, many features (such as the locomotive's address,
acceleration, and configuration) can be customized to the individual
locomotive in which the decoder is installed. The properties will be
saved in non-volatile memory locations on the locomotive decoder so
that they will retain their values even after the power has been removed.
The values are set electronically, which means that the locomotive does
not need to be opened again after the decoder has been installed in
order to read or modify the values of these so-called Configuration
Variables (CVs). DCC decoders have a total of 128 CVs. Not all of these
CVs are used at this time since many have been reserved for future
use.
All NMRA-compliant DCC Command Stations can be used to program
Atlas #544099 and #447299 DCC decoders. With several entry-level
systems, only CV #1 (the locomotive address) can be set unless you
use a separate DCC programmer. More advanced DCC systems
support the ability to set many more CVs.
This decoder is most readily programmed in either Direct Mode on
the programming track or in Operations Mode on the main track.
The specific details for reading and writing Configuration Variables with