until it gets to the block. Failing to do this can cause the train
to stop before getting to the sync block, throwing everything
off. After the pause, change to PLAY and the recorded run
will be replayed.
If the controller is used with a point-to-point layout that has
diodes at each end, a separate sync block is not needed. Every
time the train passes the diode, it will stop and will be back in
sync when it restarts. See:
for information on how these diodes can be installed.
An optional “Start” button can be added to the circuit to have
the train start up while in play mode only after this button is
9. This view of the side of the second unit shows the ON/
OFF switch, DC POWER connection and the two pairs of
output connections. The first is labeled “To Track.” These
two contacts go to the track. The other two connections,
labeled “To Block” are for the stop block. Connect one
terminal to the uncut section of track and the other to the
cut section of track so power can be supplied to the stop
block when the relay is not active.
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