Tsunami2 Digital Sound Decoder. Diesel Manual - part 4

All Aboard!

Tsunami2 Diesel User’s Guide

Resetting CVs (Starting Over)

Occasionally, a programming error ay occur and the decoder might not respond as you
would’ve 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

™

another device that maintains power, allow at least two minutes for charging before
programming.

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. Turn off track power to the decoder. Wait 5 seconds then return power to the decoder. If

you have installed a SoundTraxx CurrentKeeper or another device that maintains track
power, ensure that the device is fully discharged (usually about 3-4 minutes) before
returning power.

4. Wait about 10 seconds after returning power to the decoder. All lights (headlight, backup

light or effect lights)

, as well as the decoder’s error 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 is designed to secure the decoder and
prevent the inadvertent programming of CVs. For example, if you
have installed a function decoder in addition to the sound decoder,
you may wish to lock the CVs in one decoder while programming
the other.

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 accidently locking the decoder when the CV lock feature
is not needed.

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. CV 16 can only be programmed 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.

Locking and Unlocking CVs
CV 15: CV Unlock Code
CV 16: CV Lock ID
CV 30: Error Information

All Aboard!

Tsunami2 Diesel User’s Guide

If the decoder is unlocked, changing the value in CV 16 will instantly lock the decoder. You must
then set CV 15 to the same value as was just programmed into CV 16 to unlock the decoder
again. If you use the CV locking feature for a multi-decoder installation in one model, each
decoder must first have its lock code set prior to the installation of any other decoders. First
install one decoder and program its lock code. Then install the next decoder and program its
lock code. Since the first decoder is now locked, it will be unaffected by the programming of the
second decoder. If you accidentally set the lock code of the two decoders to the same value you
will need to disconnect one decoder and start over. Continue in this manner until all decoders
have been installed and their lock codes have been set.

Follow the steps below to lock and unlock CVs:

1. Enter a value of 1 into CV 30 (Error Information) to enable the CV lock/unlock feature.

2. Enter a value from 0 to 7 into CV 16 to set the lock code.

3. To unlock CVs, set CV 15 to the same value as CV 16.

4. To lock CVs, set CV 15 to a different value than CV 16 to unlock CVs.

It is a good idea to set up a standardized

system so you don’t forget the lock code settings. You

might, for example, set all motor decoders to a CV lock code of 1, sound decoders to a lock
code of 2, and function decoders to a lock code of 3. Keeping CV 15 set to 0 will guarantee the
decoder stays locked until you are ready to begin programming.

If You Forget the Lock Code

As there are only eight possible combinations, you can easily determine a forgotten lock code
using trial and error with the following procedure:

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 reduce
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.

Basic Programming

Tsunami2 Diesel User’s Guide

Basic Programming

Configuring the Address

Like all DCC decoders, Tsunami2 responds to primary
address 3 right out of the package. Address control CVs
allow you to set primary and extended addresses or your
choice, which can

be useful when matching the decoder’s

address with the number on the locomotive, for instance.

Since most command stations will guide you through the process simply follow their instructions
for programming your decoder address.

We’ve included information about the CVs used to

configure your decoder’s address for those who have older command stations or models that
does not provide prompts for this process.

Setting Addresses

Tsunami2 recognizes either the primary address (also known as the short address) in CV 1 or
the extended (long) address in CVs 17-18. Whether you use the primary or extended address
will first depend on whether or not your DCC system uses extended addressing (not all of them
do, so if in doubt, see y

our command station owner’s manual.) Second, it will depend on your

preferences and the numbering scheme you use for setting your decoder addresses. The
extended address has the advantage that you can use all four digits of a locomotive’s road
number for the decoder address making it easy to remember. Be aware that some DCC
systems do not support the full range of available addresses.

Programming Notes: You can set the primary and extended addresses in Service Mode (on
the programming track) at any time. Some DCC systems also allow you to set the address in
Operations Mode according to the following restrictions:

 If the decoder’s primary address is enabled (bit 5 of CV 29 set to 0), only the extended

address can be changed in Operations Mode.

 If the decoder’s extended address is enabled (bit 5 of CV 29 set to 1), only the primary

address can be changed in Operations Mode.

Primary Address

The Primary address is commonly referred to as the “short” or “2-digit” address. Enter a value
from 1 to 127 into CV 1 to set the primary address. All SoundTraxx decoders are set to primary
address 3 by default.

When selecting the locomotive with your DCC throttle, only enter “3” into

the method used to select locomotives. Entering “03” or “0003” can inadvertently choose the
extended address, which is not configured as

the decoder’s default address type.

Extended Address

Often referred to as the “long” or “4-digit” address, the extended address is actually made up of
two CVs, 17 and 18. Unless you are an experienced user, you should not try to program these
CVs individually as a specific protocol is required in order for the decoder to accept the new
data (see the Tsunami2 Diesel Technical Reference for details).

After setting the extended address, set bit 5 of CV 29 (Configuration Data 1) to 1 to enable its
usage. If bit 5 of CV 29 is set to 0, the decoder will continue to respond to the primary address.
Continue to “Configuring the Decoder” for more information about CV 29.

Address Control CVs
CV 1: Primary

(“Short”) Address

CVs 17-18: Extended

(“Long”) Address

Basic Programming

Tsunami2 Diesel User’s Guide

Configuring the Decoder

CV 29 controls a variety of important settings. It determines
locomotive direction, speed-step mode, alternate power source,
speed tables, and the decoder address.

Configuring CV 29

This is the first CV that you’ll encounter which will need to be programmed by the bits. Refer to
the “CV Programming Tutorial” for an interactive guide to programming multiple features in a
single CV.

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

EAM

STE

APS

DIR

DIR: Locomotive Direction

Bit 0 (DIR) is used to determine locomotive direction. Setting bit 0 to 1 will invert direction
commands, and the decoder will interpret forward as reverse, and reverse as forward. This
operating mode is most useful for setting up diesel engines that ran with the long hood section
forward. However, it is also useful for electronically correcting installations where the motor
wires were accidentally reversed and avoids dismantling the locomotive a second time.

F0: F0 Location (Speed-Step Mode Select)

Bit 1 (F0) is used to determine the number of speed steps within the throttle range. 14, 28, and
128 speed-step modes are available, and 28/128 speed-step mode has been enabled by
default. Select the highest number of speed steps supported by your command station for the
most refined throttle operation.

APS: Alternate Power Source (Analog Mode)

Setting bit 2 (APS) to 1 will allow the decoder to use an analog power source when a DCC
signal is not present. Entering a value of 1 into CV 12 (Alternate Power Source) will enable
analog mode (disabled by default).

Refer to “Configuring for Analog Mode Operation” for more

information.

STE: Speed Table Enable

Setting bit 4 (STE) to 1 will select a linear or 28-point custom speed table in place of the 3-point
speed table. Refer to

“Configuring Throttle and Braking” for more information.

EAM: Primary or Extended Address

Bit 5 (EAM) is used for selecting the active address. Setting bit 5 to 0 will enable the primary
address. Set the primary address with CV 1 (Primary Address). CVs 17 and 18 (Extended
Address) are used to set the extended address. Set bit 5 of CV 29 to 1 to enable the extended
address.

Refer to the previous section, “Configuring the Address,” for more information about

setting the extended address.

Refer to Table C on the following page to view decimal values for CV 29.

Decoder Configuration CVs
CV 29: Configuration Data 1

Content .. 2 3 4 5 ..