ZIMO MS450, Instruction Manual

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Page 72 MS - SOUND decoders MS440 to MS990 and MN - NON-SOUND decoders MN170 to MN340
CV Denomination
Range Default Description
3.26 #264
Variable low voltage
(large scale and special
decoders)
10 - 158 15
Variable low voltage (adjustable by CV, only large scale
and some special decoders)
= 10 - 158: Low voltage in tenths of a volt (1 - 15.8 V)
5 #265
Selection of
Loco type
1
2
…
101
102
…
1 or 101
Type of
steam loco
1 or 101
Diesel loco
= 0, 100, 200: Reserved for future applications
= 1 - 32: Selection of sounds of steam locos in Sound
Collection, e.g. for loco type BR01, BR28, BR50,
etc. Sounds like chuff sounds as well as other
sounds (whistle, compressor, bell…) will be
matched.
= 101 - 132: Selection of diesel loco types
(if several diesel sounds are in the collection).
5.3 #266
Total volume
(Multiplier)
0 - 255
=
0 - 400 %
64
=
100 %
The default value “64” results in the (mathematically)
highest possible distortion-free playback volume; but val-
ues of up to 100 may nonetheless be practical.
Recom-
mended: CV #266 = 40 - 90
5.4 #267
Chuff beat
frequency
according to
“virtual
Cam sensor“
also see
CV #354
in this table
(Steam chuff
Frequency
at speed step 1)
0 - 255 63
CV #267 is only active if CV #268 = 0:
Chuff beats follow the “virtual cam sensor”; an actual cam
sensor is not needed in this case.
The basic configuration “70” results in about 4 to 6 to 8
chuffs per rotation, depending on the selected chuff-set.
Because it also depends in large part on the motor and
gearbox used, an individual adjustment is necessary in
most cases in order to achieve the exact chuff frequency;
therefore, CV #267 is used:
The lower the value the higher the chuff frequency and
vice versa. The setting should be performed at a low speed
(around speed step 10), but not at the lowest speed step
1.
By means of CV #393 bit 6 = 1 the chuff interval of CV
#267 can be extended 4 times.
5.4 #268
Switch to real
cam sensor
and
Number of spikes of
the cam sensor for
chuff beat
and
Special functions
“simple articulated”
steam locos
0 - 63
and
128, 192
1
= 0:
“Virtual“ cam sensor is active (to be adjusted
with CV #267, see above).
= 1:
Real cam sensor (connected to „In2” resp. “In3“ of
the decoder) is active, each negative spike results in a
chuff
= 2, 3, 4 … 63 real cam sensor, several triggers in
sequence (2, 3, …, 63) result in one chuff beat.
= 128 (bit 7=1 with “virtual” cam sensor): second driver is
a bit slower; only meaningful if a second sound sam-
ple is available in the sound project.
= 192 (bits 6 and 7 = 1): When no separate sound sam-
ple is available for the second driver, the same sam-
ple is played back for the second driver, only a bit
slower.
Bit 7 = 1: with real cam sensor, see values above
Cam sensor for driver 1 at IN3 (as always),
Cam sensor for driver 2 at IN2,
(only possible if decoder has two inputs)
5.4 #269
Lead-chuff-
accentuation
0 - 255 10
A typical sound signature of a passing steam engine is that
one chuff out of a group of 4 or 6 chuffs is louder in volume
than the rest; this effect is already part of the chuff set but
can be further amplified with the help of CV #269.
5.4 #271
Fast driving
overlapping effect
0 - 255
1
The individual steam chuffs of a real engine overlap each
other at high speed. Because the frequency of the chuffs
increases but won’t shorten to the same extend, they will
CV Denomination
Range Default Description
(Useful up
to
@ 30)
eventually blend in to a weakly modulated swoosh. This is
not always desired in model railroading because it doesn’t
sound that attractive, hence CV #271, with which an ad-
justment is possible to have the chuff beats accentuated
at high speed or rather fade away.
5.4 #272
Blow-off
duration
also see
CV #312
in this table
(Blow off
Key)
Opening the cylinder valves on a prototype steam engine
for the purpose of water drainage is entirely up to the en-
gineer. An automated draining at start-up is more suitable
in model railroading; CV #272 defines how long after start-
up the blow-off sound should play.
Value in CV
#272 = time in tenths of a second!
NOTE : If the blow-off sound is also allocated to a function
key (as delivered on F4, see CV #312), the automated
blow-off sound can be shortened or extended with the rel-
evant function key. Automated blow-off and funct. key
blow-off are inevitably the same (as per select./alloc.).
= 0 : no blow-off sound playback
5.4 #273
Blow-off
Start-up delay
Opening the cylinder valves and with it the related blow-off
sound on a real steam engine starts most often before the
engine even starts to move. This can be imitated with CV
#273 by automatically delaying the start of the loco.
This effect is cancelled when a shunting function with mo-
mentum deactivation is being activated (see allocation of
F3 or F4 in CV #124!)
= 0: no delayed start
= 1: Special setting blow-off by controller;
no delayed start, however, lowest
speed step (lowest slider position > 0,
only for 128 speed steps) means “do
not drive yet, but blow off!”).
= 2 ... Start-up delay in tenths of seconds:
Recommendation: no values > 20 (> 2 sec)
5.4 #274
Blow-off
Standstill
and
Starting whistle
Standstill
Constant opening and closing of the cylinder valves in real
shunting operations, that often requires many short trips
with associated idle times, is usually omitted. CV #274
causes the blow-off sound to be suppressed if the engine
wasn’t standing still for the time defined here.
Value in CV #274 = time in tenth of a second!
The same stop-time is also used for the start-up whistle!
5.5 #275
Chuff volume
at low speed
without load
0 - 255 220
With this CV the chuff volume can be adjusted for low
speed and “basic load” (same conditions as during the “au-
tomated
recording run”).
Here, the engine is driven by about 1/10 of its full speed,
adhering to the exact speed is however not important.
During this adjustment CV #277 is to be left at “0” (default),
so that the setting for “no-load driving” is not influenced by
load factors.
5.5 #276
volume
at high speed
without load
0 - 255 220
Like CV #275 (see above) but for driving fast.
Set the speed regulator to maximum during this set-up.
5.5 #277
Dependency of
chuff volume
of current
load
0 - 255 10
When deviating from the basic load (as determined by the
“Automated recording of the motor’s “basic load” factor”,
see above), the chuff beat volume should be increasing
(on inclines) or decreasing on declines (even muted).