User manual

17
LokSoundXL User Manual V2.1 05/2002
Sound adaption
We recommend a PC and LokProgrammer for
programming function outputs: the LoksoundXL-
Decoder offers so many possible combinations that it
is difficult to manage these without a computer.
5.2.4 Sound adaptation
LokSoundXL decoders offer many possibilities to adjust
the sound effects. All parameters are stored in CVs
that, like all others, may be modified.
Adaptation of revolutions for diesel and pitch for
steam
The revolutions of a diesel motor may be modified
with 2 CVs:
•Enter the revolutions of the idling diesel motor in
CV 50. The standard value of 128 permits
reproduction of the sound at original speed, while
value 64 reduces this to half speed.
•Enter the revolutions at maximum speed in CV 51:
value 255 means double the original speed.
Use the same parameters when adapting the pitch of
the chuffs for steam locomotives: the interval of the
chuffs should be shorter and vary in pitch with
increasing speed.
Settings for diesel or electric locomotives
To simulate a diesel or electric locomotive the CVs 52
and 53 have to be set to 0.
Special settings for steam locomotives
To simulate a steam locomotive you have to
synchronize the steam chuffs with the revolutions of
the driving wheels. There are 2 ways:
•With an external wheel sensor
•Speed step dependent
Depending on the method selected, certain CVs have
to be set accordingly. LokSoundXL is factory pre-set
to speed step depend adjustment.
Using the wheel sensor
The wheel sensor must be connected as described in
chapter 3.7.3 Then two more settings have to be
done: set CV 52 to value 255 and enter a value > =1
in CV 53. CV 53 defines after how many pulses by the
sensor the next steam chuff will be reproduced.
Normally one chuff per pulse should be played,
therefore CV 53 should read "1".
Speed step dependent method
With this method the interval between chuffs is set
with CV 52 and CV 53. This method is recommended
if an external wheel sensor cannot be used. The
adaptation of this variable to the combination of wheel
/ gearbox may require some tests. It pays to spend
some time in order to achieve an optimal result. This
feature works best with Back EMF control. With
Märklin® locomotives with universal motor (Back EMF
is always switched off) only a compromise may be
reached. In this case we recommend the use of an
external wheel sensor.
For CV adaptation proceed as follows:
•Set CV 52 to 100 and CV 53 to 200.
•Put the locomotive onto the track and drive with
speed step 1 (sound is switched on).
•Measure the time it takes in seconds for the driving
wheel to do one turn at this speed.
• Divide the time by 0,04608.
•Enter a rounded value without decimal points in CV
52.
•Increase the speed and check whether the chuff-
rhythm matches the turns of the drivers. If the
chuff is too fast, increase the value in CV 53
gradually, if it is too slow, decrease the value in
CV 53.
Adjusting the volume
The volume of LokSoundXL decoders may be adapted
in 3 steps:
Enter the desired value in CV 63.
Permitted values are: 0 (quiet), 1 (medium), 2 (loud).
Random sound effects
CV 54 and CV 55 define the frequency of random
sounds that are played while a steam locomotive is
stationary. CV 54 contains the minimal time between
2 random sounds, CV 55 the maximum. Both
represent an interval in which LokSoundXL randomly
selects and plays sounds. The units of both CVs are
0.184 seconds.
Example: the minimum interval in CV 54 should be
1.5 seconds. Enter 1.5 / 0.184 = 8 into CV 54.