Tsunami® Digital Sound Decoder
User’s Guide Addendum
for the Cummins QSK19C x3 (GenSet)
Software Release 1.15
2/19/13
Notice
The information in this document is subject to change without notice.
SoundTraxx (Throttle Up!) shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential
damages resulting from the furnishing, performance or use of this material.
This document contains information protected by copyright. No part of this document may be photocopied or reproduced in any form without the
prior written consent of Throttle Up! Corp.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.
SoundTraxx and Tsunami are registered trademarks of Throttle Up! Corp.
SoundTraxx DCC, Digital Sound Decoder, Dynamic Digital Exhaust, Auto-Exhaust and Hyperlight are trademarks of Throttle Up! Corp.
Table of Contents
All Aboard! ...........................................................................1
Overview ................................................................................................1
Operation .............................................................................2
Using Your Tsunami Cummins QSK19C x3 (GenSet)
Digital Sound Decoder...........................................................................2
Overview
All Aboard!
Congratulations on the purchase of your SoundTraxx® Tsunami® Digital
Sound Decoder™. This User’s Guide Addendum will provide you with the
unique information you need for proper operation of the Tsunami for the
Cummins QSK19C x3 (GenSet). For the power user, the Tsunami Technical
Reference will provide a list of all the CVs available for use with Tsunami
decoders, as well as their exact functions and make-ups for those who wish
to have a complete reference for advanced programming techniques.
Technical Bulletins and Application Notes covering various topics are also
published from time to time, and these may be downloaded free of charge
from our website at www.soundtraxx.com.
Tsunami User’s Guide for the Cummins QSK19C x3 (GenSet) Page 1
Operation
Using Your Tsunami Cummins QSK19C x3
(GenSet) Digital Sound Decoder
Your SoundTraxx Tsunami with multiple Cummins QSK19C prime movers
for GenSet Locomotives has been shipped with all the CVs pre-programmed
so you can begin using your locomotive immediately without having to worry
about making adjustments. However, the software for this decoder is as
unique as the prototype, and we have several special features to enhance
the experience of running your GenSet.
This decoder has individual sound channels for each of the locomotive’s
three prime movers. We recorded this decoder’s sounds directly from the
Cummins QSK19C prime movers of the NRE 3GS-21B Locomotive. NRE
released the prototype in 2007 to meet California’s air quality standards by
using Generator Set, or GenSet, technology with multiple prime movers that
are switched on and off as needed for power. This setup results in signicant
fuel savings and emission reductions.
Operation Overview
This decoder has operational features specic to the prototype. The
following section describes these features and their uses. Additional
programming information can be found in the Tsunami Diesel Technical
Reference.
Prime Mover Operation
Using extensive research, the operating characteristics of this decoder have
been set up to correctly match the operation of the prototype prime movers.
For example, when the locomotive is idling, only one prime mover is switched
on. The other prime movers kick on and off progressively as needed when
the locomotive throttle is notched up or down. When notching down, the
prime movers go to idle and then have an internal timer to simulate “cooling
off” as they shut down. Please refer to the Prime Mover Operation Chart on
the next page for throttle notch settings.
Tsunami User’s Guide for the Cummins QSK19C x3 (GenSet) Page 2
Operation
Throttle Prime Mover 1 Prime Mover 2 Prime Mover 3
O O O O
Startup
Notch 1 1200 RPM
1200 > 1500 Rev Up
Notch 2 1500 RPM
1500 > 1800 Rev Up
Notch 3 1800 RPM
Startup
Notch 4 1500 RPM
Notch 5
1500 > 1800 Rev Up Startup
Notch 6 1800 RPM 1500 RPM
1500 > 1800 Rev Up
Notch 7 1800 RPM
1800 > 2000 Rev Up 1800 > 2000 Rev Up
Notch 8 2000 RPM 2000 RPM
2000 > 1800 Rev Down 2000 > 1800 Rev Down
Notch 7 1800 RPM 1800 RPM
1800 > 1500 Rev Down
Notch 6 1500 RPM
1800 > 1500 Rev Down Shutdown
Notch 5 1500 RPM O
Notch 4
Shutdown
Notch 3 O
1800 > 1500 Rev Down
Notch 2 1500 RPM
1500 > 1200 Rev Down
Notch 1 1200 RPM
Shutdown
O O
Tsunami User’s Guide for the Cummins QSK19C x3 (GenSet) Page 3
Operation
CVs Unique to the Cummins QSK19C x3
The following CVs are unique to this decoder.
CV 112 Air Compressor
The model contains an air compressor that is unique to the GenSet
Locomotive and can be activated through a function key or turned on
automatically in CV 112. The air compressor sound is premixed with one
of the prime mover sound channels, and therefore does not have its own
volume setting that can be controlled with CV 132. However, the compressor
is still activated using function 10 just like any other Tsunami decoder.
CV 133 Dynamic Brake
Since the prototype does not have a dynamic braking system, this sound is
not included on the decoder. CV 133 (dynamic brake volume) is not used,
and bits 6 and 7 are not used in CV 116. Function 4 on your DCC cab at
default does not activate a function.
CVs 171, 172, 173
Prime Mover Reverb Effect Send Levels
CVs have been provided to control the reverb effect send level for each prime
mover. The default values are set to 0. The CVs are:
CV 171 Prime Mover 1 Reverb Effect Send Level
CV 172 Prime Mover 2 Reverb Effect Send Level
CV 173 Prime Mover 3 Reverb Effect Send Level
CVs 131, 145, 146, 147 Volume Settings
Each prime mover has its own independent volume (CVs 145, 146 and 147)
that can be set to a value between 0 and 255. CV 131 is a master exhaust
volume that shifts the three prime mover volumes up and down proportionally
the same way that the overall master volume (CV 128) works. They are
currently defaulted to the following levels:
CV 131 = 180 Master Exhaust Volume
CV 145 = 150 Prime Mover 1 Volume
CV 146 = 200 Prime Mover 2 Volume
CV 147 = 250 Prime Mover 3 Volume
Tsunami User’s Guide for the Cummins QSK19C x3 (GenSet) Page 4
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