QSI Quantum Revolution-A User's Operation Manual page 27

If you have made it this far, congratulations! Most importantly, thank you for choosing the
Quantum Revolution. To realize its full potential, consider using Quantum Programmer to gain
access to the ever-expanding sound and control possibilities the Revolution offers. And of course,
for additional information and technical support, please feel free to contact us at any time.
Good railroading!
Josh Shedaker
Special thanks to Don Fiehmann, QSI and Budd Shedaker for their contributions and editing.
Notes:
(10-15-08)
The Katos require the new revision of download files from QSI with the revised PID parameters,
1050-0v7-25-3 that supports the new PID and allows changing the PID. Otherwise, they have mid-speed surging
Proper Chuff Sounds for Articulated Locomotives:
Articulated locomotives fall into 2 general categories, Simple and Compound. You can tell which one you have by looking at the
size of the steam cylinders on you loco.
Simple Articulated locomotives use high-pressure steam in both the front and rear cylinders. Both sets of cylinders will be the
same size. These locos will have a separate exhaust sound (Chuff) for each set of cylinders. Many times this will be a double chuff
or 8 chuffs per driver revolution that will go in and out of synchronization.
Compound Articulated locomotives or Mallets use high-pressure steam in the rear set of cylinders, which in turn exhaust into low-
pressure front cylinders. The front cylinders on a compound articulated will be about twice the size of the rear cylinders. The front
cylinders exhaust out the stack. Since only the front cylinders exhaust out the stack, Compound Articulated loco's sound more like
a conventional steam locomotive with 4 chuffs per driver revolution.
Some modern Compound Articulated loco's were able to start heavy trains by using high-pressure steam in both sets of cylinders
for short periods. This would result in a double chuff similar to a simple articulated. The difference being that because of the greater
size of the low-pressure cylinders, the second set of chuffs could be far louder than the first. These locos would only run this way
long enough to get the train moving then they would return to normal compound operation.
Both the QSI G Scale and the Revolution series decoders offer an articulated sound firmware set to duplicate the way these
locomotives sounded. The 4000 series for G Scale and 4050 for the revolution series.
These sound files have two different chuffs. Both with independent volume control so you can duplicate any of these articulated
sounds. Try the following.
Simple articulated:
Set CV52.10 (Chuff) and 52.11 (Chuff2) at the same value to get the prototypical double chuff.
Compound Articulated (normal operation)
Set CV52.10 (Chuff) to the level you want and set CV52.11 (Chuff2) to 0 so there are the prototypical 4 chuffs per rev.
Compound Articulated (Starting)
Set CV52.10 (Chuff) to the level you want and set CV52.11 (Chuff2) to a higher value so there are the prototypical 8 chuffs per rev
with the second chuff considerably louder. After the train is moving reset CV 52.11 to 0 to get the normal sound of a compound
.
articulated
Quantum Revolution complete DCC Reference Manual:
http://qsisolutions.com/pdf/quantumdccrefmanual_4_3_0.pdf
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Customer support. If you need
help please call 800-671-0641
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