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Tsunami2 Electric User’s Guide
16
1. Place the model on the programming track and enter a value of 0 into CV 15.
2. Try reading the value of CV 16. If the value is not read back, CVs are locked.
3. Enter a value of 1 into CV 15 and try reading the value of CV 16 again.
4. If the value is not read back, enter a value of 2 into CV 15 and try again.
5. Enter values 3-7 into CV 15 until the value of CV 16 is read back and CVs are unlocked.
If you still can’t identify the lock code, there may be a problem with the installation, programming
track, or decoder. Contact SoundTraxx customer support if this occurs.
If you do not have access to a programming track with read-back capabilities (or are uncertain
as to whether it is working properly), you can also use Operations Mode to discover the Lock
Code by alternately programming CV 15 and setting another CV to a value where there is a
known response. For example, changing CV 128 (Master Volume Control) will provide auditory
feedback as to whether the decoder is unlocked by virtue of a change in sound level. Thus, you
would begin by setting CV 15 to 0 and then setting CV 128 to 0. If the volume does not fall to 0,
the decoder is locked. Then set CV 15 to 1 and try programming CV 128 again. Repeat this
process until you find a value for CV 15 that results in a change in sound volume as you change
CV 128.
Troubleshooting Tip:
Even if you are not planning to use the CV Lock feature, it can still be
accidentally activated by inadvertently programming CV 15 or 16 with a non-default value. If you
have a decoder that is otherwise working properly (i.e., making sound and responding to throttle
commands) but has suddenly stopped accepting CV changes, then first run through the
procedure under “If you Forget the Lock Code” to determine if the decoder has been locked.