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user manual LokSound / LokSoundXL V3, 1st edition, 07/2004
3.3.6.1 Connecting a wheel sensor
To synchronize the exhaust chuffs with the revs of
the drivers an external sensor can be used. The sensor
input is available on terminal 1-7.
The LokSoundXL decoder supports reed contacts,
mechanical contacts or Hall sensors. Many models
(e.g. Bachmann or Märklin®) are supplied complete
with mechanical contacts.
3.2.6.2 Connecting a reed contact with
magnet
If a reed contact is to be used one miniature magnet
(available at hobby shops) for each exhaust chuff must
be attached to the driving wheel axle in such a way
that the magnet triggers the reed contact once every
turn.
Miniature reed contacts have been proven to be very
reliable. They are available at electronic specialist stores.
Suitable magnets may be purchased at model train
shops. (e.g. mini-track magnets).
3.2.6.3 Connecting a mechanical contact
Many models are supplied complete with a mechanical
contact. It has to be connected in the same way as a
reed contact, namely to terminals 1-4 and 1-7.
All double pole (mechanical) contacts that are isolated
from the chassis may be used.
Connecting auxiliary functions LokSoundXL decoder
3.2.6.4 Connecting a Hall sensor
A Hall sensor is an electronic circuit that responds to
an alternating magnetic field similar to a reed contact.
It is, however, far more precise than a reed contact.
Hall sensors are easier to adjust since the distance
between sensor and magnet is not critical. A commonly
used hall sensor, that can be purchased via mail order
is the TLE4905 by Siemens / Infineon.
The terminal Vs of the TLE4905 has to be wired to
terminal 1-4, GND to terminal 1-5 and the Pin Out-
put to terminal 1-7.
3.2.7 Connecting additional reed contacts
LokSoundXL decoders from version 2.0 have two
additional inputs that can trigger various functions.
The main purpose of these inputs is to trigger sounds
by means of track magnets. A reed sensor has to be
wired to one of these inputs and a magnet is to be
placed at the appropriate location on the layout. Every
time the engines passes that spot a sound effect will
be triggered.
With the aid of these sensors users of the LGB MZS
with Lokmaus can also trigger the many sound effects
of the LokSoundXL decoder.
The inputs REED-IN1 and REED-IN2 share the
terminals 2-7 and 2-8 with the auxiliary function
outputs AUX 5 and AUX 6. Therefor AUX 5 and AUX
6 are not available if you use these inputs.
Figure 10b:
Connecting a Hall sensor
TLE4905
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
GND
Output
Vs
miniature
magnet
drive wheel
drive wheel
miniature
magnet
reed contact
Figure 10a
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
