TT-DEC-R – Manual
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4. Correct position of the turntable sliding switches and the setting or
removing of the matching jumper JP1 of the TT-DEC-R
:
There are two sliding switches at the lower side of the turntable.
One of the two sliding switches is market with a “0” and ”1”. For the operation in
connection to the Turntable-Decoder TT-DEC-R this switch has always to be set onto
position “1”.
The second slide switch is marked with the symbol “=” and “~”. The marking “=” indicates
the setting for the operation with the 2-conductor bridge track system and the marking
“~” indicates the setting for the 3-conductor system.
Now select the correct switch position in accordance to the used track conductor
system.
Additional information can be found within the Roco Manual for the turntable at the
section “Selecting the driving current system”.
If you use the turntable at the 2-conductor system (sliding switch at the turntable in
position “=”) please remove the jumper JP1 at the TT-DEC-R. You can find this jumper
at the right between the case cover and the heat sink of the Turntable-Decoder TT-
DEC-R.
If the operation of the turntable is used in a 3-conductor system (sliding switch of the
turntable in position “~” the jumper JP1 of the Turntable-Decoder TT-DEC-R shall
remain in position (supplied position).
5. TT-DEC-R connection to the digital layout and to the turntable:
•Important Information: Switch-off the electrical supply before performing any
connection work (switch-off all transformers or unplug the main connection).
5.1. TT-DEC-R connection to the digital layout:
The TurnTable-Decoder TT-DEC-R receives the power supply via the two clamps at
the very left side of the 6-poles connection clamp. The voltage can be between 16 and
18 Volt~ (alternated voltage of a model railway transformer). Both clamps are marked
accordingly.
The decoder receives the digital information via the third and fourth clamp (counted
from the left side) of the 6-poles connection clamp which is marked with “Commands”
on the pc-board. Supply the digital information directly from the control-unit or from a
booster respectively from the digital ring conductor “switching” which has been
connected to all accessory decoders. To assure that the TT-DEC-R receives interference-
free data do not take the digital information directly from the rails.
One of the two digital clamps has been marked with red and Kand the other has been
marked with brown and J. The colors red and brown respectively the marking Jand K
will be used by most command stations.
