SoundTraxx Tsunami Steam Users Guide - Manual (Page 12)

Tsunami Steam Sound User’s Guide Page 9
motor shaft when a read or write command is given.
If your DSD is otherwise working properly (i.e., responds properly on the
mainline to speed and direction commands) but your command station
is having troubles reading CV data from the DSD, it may be due to
incompatibilities between the electrical requirements of the DSD (which are
different from conventional decoders due to the added audio circuitry) and
the electrical characteristics of your programming track. In such an event,
we suggest you simply go ahead and program the data into the CVs anyway.
Usually the DSD will accept the data and function properly when placed back
on the main track.
Another option is to use a Programming Track Booster, such as SoundTraxx
PTB-100 (P.N. 829002). The PTB-100 amplifies the programming track
signals to levels that work best with Tsunami. It is easy to install (see below)
and inexpensive. An advantage to using the PTB-100 is that it also provides
short circuit detection and some helpful diagnostics. It works well with all
other SoundTraxx decoders, too.
Figure 1 - General Wiring Diagram for the SoundTraxx PTB-100
Finally, if you continue to experience difficulties, try a different programming
mode. If your system supports it, the best way to program the CVs is
Operations Mode, as it allows you to immediately see or hear the results of
your changes. It is important, however, to realize that not all programming
modes will program all CVs. Additionally, the specific programming mode
you use will depend upon the type of DCC system you are using. Some of
the newer DCC systems can automatically select the proper programming
mode so all you need to do is specify the CV number and its new value. On
the other hand, some systems support only a few of the programming modes
and may restrict which CVs you can program. If in doubt, refer to your DCC
system’s manual or contact the manufacturer to determine which methods
they support.
Basics of Programming
Power In
Power In
Programming Track Output
Programming Track Output
Programming Track
To
P
ro
gr
am
m
in
g T
rac
k
COMMAND
STATION
POWER
SUPPLY
COMMAND
STATION
PTB-100
BLACK
BLACK
ORANGE
ORANGE
YELLOW
YELLOW