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All Aboard!
Tsunami2 Electric User’s Guide
14
Resetting CVs
Occasionally, something goes wrong and Tsunami2 will not respond as expected. Usually, this
is caused by one or more CVs inadvertently being programmed to the wrong value. The CVs
can be quickly reset to their factory default values. Follow the steps below to perform either a
full or partial CV reset:
1. Turn on track power to the decoder. If you have a SoundTraxx CurrentKeeper
™
or
another device that maintains power, allow at least one minute before turning the power
back on.
2. Enter one of the following values into CV 8 (Manufacturer ID) to perform a full or partial
CV reset:
CV 8: Manufacturer ID
8 = Reset All CVs
9 = Reset CVs 1-128
10 = Reset CVs 129-256
11 = Reset CVs 1.257-1.512
12 = Reset CVs 2.257-2.512
13 = Reset CVs 3.257-3.512
3. Wait about 10 seconds after returning power to the decoder. The headlight and/or
backup light will flash 16 times to indicate CVs have been successfully reset. Tsunami2
will respond to primary address 3 after all CVs, or CVs 1-128 have been reset.
Note: Continue cycling power to the decoder if the CV reset is unsuccessful. If you are unable
to reset CV values, continue to “Locking and Unlocking CVs” to verify the decoder is not locked.
Locking and Unlocking CVs
The CV Lock/Unlock feature allows you to program a decoder without the danger of overwriting
the programming in another. This is especially useful in installations where multiple decoders
are used. For example, if you have installed a function decoder in addition to the sound
decoder, you may wish to lock the CVs after programming to prevent accidentally programming
one decoder or the other.
CV 15, CV Unlock Code
CV 16, CV Lock Code
CV 30, Error Information
To use the CV Lock feature implemented in CVs 15 and 16, bit 0 of CV 30 must first be set to 1
(the default value is 0). This is to avoid inadvertently locking the decoder when the CV Lock
feature is not needed.
CVs 15 and 16 are used for locking and unlocking the decoder. CV 15 is the Unlock Code and
may be programmed to any value from 0 to 255 regardless of whether the decoder is locked or
unlocked. CV 16 is the Lock Code and may be set to any value from 0 to 7, but only when the
decoder is unlocked. Attempts to program CV 16 with a value greater than 7 will be ignored.
The decoder is unlocked when the value in CV 15 matches the value in CV 16. Otherwise the
decoder is locked and cannot be programmed in either Operations Mode or Service Mode.
Further, a locked decoder cannot be reset to its factory defaults until it is unlocked. Tsunami2
decoders are shipped from the factory with all CVs unlocked, that is, CV 15 and 16 are both set
to 0.