Page 16
The following table provides some of the more common values for CV 29 for the features
indicated.
Extended
Addressing
Speed
Tables
Power
Conversion
28/128
Speed Steps
Reversal
Direction
Decimal
Value
Binary
Value
Hex
Value
X
2
00000010
2
X
X
6
00000110
6
X
X
18
00010010
12
X
X
X
22
00010110
16
X
X
34
00100010
22
X
X
X
38
00100110
26
X
X
X
50
00110010
32
X
X
X
X
54
00110110
36
X
X
3
00000011
3
X
X
X
7
00000111
7
X
X
X
19
00010011
13
X
X
X
X
23
00010111
17
X
X
X
35
00100011
23
X
X
X
X
39
00100111
27
X
X
X
X
51
00110011
33
X
X
X
X
X
55
00110111
37
For more
information,
download the
Quantum DCC Reference Manual
(Version
3)
from
www.walthers.com.
Quantum System Sounds
42
Diesel Motor Rev:
Quantum allows diesel motors to be operated with all eight notches
corresponding
to the throttle notches used on the prototype. As the throttle is turned up
,
the diesel
motor RPM will increase in fixed increments until the maximum RPM occurs at notch 8.
Diesel Turbo:
Turbo appliances are used to improve the engine
'
s horsepower on modern diesels
by pumping air into the intake manifold under pressure. The power to operate
the
turbo comes
from the diesel motor
'
s
exhaust
pressure
,
which causes the turbo high-pitched whine to lag
behind the revving of the motor
.
Quantum systems use a separate sound for the turbo to allow it
to lag behind revving the motor up
and
to
"
hang
"
for
a few seconds when the motor is revved
down
.
Low Idle:
Low Idle is used on prototype engines
to
maintain a warm and ready locomotive with a
minimum of fuel consumption
.
The special Low Idle sound has a lower base throb and is less
harsh than the normal idle.
Cooling Fans:
The enormous diesel motors and generators enclosed in the diesel
cab
need
ventilation to stay cool. All diesel locomotives have powerful cooling fans on
the
roof to draw
outside air through
louvers on the
sides of the locomotive
,
which is
blown across large radiators.
You will also hear the sounds of louvers opening before the fans start.
When
cooling fans shut
down
,
you will hear the
louvers
close.
Air Pumps:
When an
engine
is sitting still
,
the pumps come on in a steady beat to replace the air
lost from
the
brake air release or any other air operated appliances.
Once the
pressure is up, the
pumps only turn on occasionally to maintain the pressure
.
Diesel Air Pumps are operated directly
from
the
motor and are quite noticeable when turned on in a non
-
moving locomotive. In Forward
,
you will hear the air pumps come on soon after the horn is operated to maintain the air pressure.
Appliance Air Release:
Compressed air
is
used on engines for operating various appliances
.
You will hear both a short air release or long air release at
various
times
.
Air Brakes:
When
prototype
train
brakes are applied,
a
ir
is released from the
brak
e
lines to
reduce the pressure
.
The more the pressure is reduced, the greater the braking. You
will
hear a
continual air release sound from
the
diesel locomotive
model
as
braking
is continually
i
ncreased
.
The
longer
the air is released
,
the quicker
the
diesel
locomotive
model
will
slow down. Once all
the pressure is released, the
engine
will continue at maximum braking
which
can still require a
long
stopping
distance
depending
on
your
load
se
ttings.
DCC and QARC4
3
Only.
Brakes Squeal:
You can hear the brakes squeal on prototype locomotives when the engine
i
s
moving slowly and can become particularly loud when the wheels are just
about
to
stop
turning.
Listen at slow
speeds
for
automatic
brake
squeal sounds
and the final distinctive
squealing
sounds as
the diesel
locomotiv
e s
low
s
to
a
stop
.
Dynamic Brakes:
Electric motors can act as motors or generators depending on whether they
are using power or generating power
.
Wh
en
used as generators
,
th
e
traction motors
are
disconnected from taking power from the
locomotiv
e's
prime mover,
and
instead are connected to
large resistor grids
in
the roof
.
By
increas
ing
the resistive
lo
ad
on the traction motors
,
the traction
motors become harder to turn
and act
as brakes for the locomotive. The
e
lectri
c
power
generated by turning the
"
Not
all
features
areincluded on every
diesel.
Consult your
Diesel Model
Specifica
ti
onssheet
for
a
list
of
features and
sounds for
your model
.
