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General notes:
Preset 8 stations must be connected to one another on
the input or “upstream” side of DMX splitters
or processing devices.
All DMX cabling must be installed in a “daisy chain” or “touch-and-go” wiring
fashion. DMX cabling using “star”, “T”, or “Y” configurations will result in unreliable operation.
Station power cabling may be wired using any topology that is convenient. However, it is usually
most convenient to run the low voltage power cabling along with the DMX cabling.
Doug Fleenor Design recommends against using the “spare” pair of wire in many DMX cables to
carry power to the Preset 8 stations. The wire gauge is inadequate to prevent excessive voltage
drop. Unreliable operation may result from this practice.
Main station wiring:
The DMX signal from a control console must be connected to the three pin DMX IN terminal block
(TB2).
The DMX output signal from the Preset 8 is available on the five pin terminal block (TB1). The
common, data plus, and data minus signals
Input power to the station should also be connected to this terminal block. The POWER COMMON
and 12-24V AC/DC terminals are used for power input to the Preset 8 stations. Take care to observe
proper polarity when connecting DC power to the Preset 8. A low voltage AC source can be used to
power the Preset 8. The low voltage AC power must be within the range of 12
– 24V. Note that if a
single transformer is used to power multiple stations, all stations must be wired with the same
polarity. It does not matter which wire from the transformer is connected to the C terminal, but the
same wire must be connected at all stations. Failure to observe proper polarity may result in a
damaged transformer which will not be covered by any warranty.
IMPORTANT NOTE: DO NOT APPLY 120VAC POWER TO THE PRESET 8. THE STATION WILL
BE DAMAGED BEYOND REPAIR AND WILL NOT BE COVERED BY ANY WARRANTY.
Remote station wiring:
All DMX cabling to and from a Preset 8 Remote station must be connected to the five pin terminal
block (TB1). The cable from the prior station and the cable going out to the next station (or other
DMX devices) will be connected to the same terminals on the five pin terminal block (TB1). The three
pin terminal block (TB2) is not used by Remote stations.
No cables are to be connected to the
three pin terminal block (TB2) if the station is configured as a Remote station.
Remote stations may be connected to the Main station input or output connectors. The Main station
supports Remote stations on both its input and output ports simultaneously. However, only a total of
four Remote stations are supported. Each Remote station must have its own unique ID (described
later in this document) regardless of which Main station port it is connected to.
Input power to the station must be connected to the five pin terminal block. The POWER COMMON
and 12-24V AC/DC terminals are used for power input to the Preset 8 stations. Take care to observe
proper polarity when connecting DC power to the Preset 8. A low voltage AC source can be used to
power the Preset 8. The low voltage AC power must be within the range of 12
– 24V. Note that if a
single transformer is used to power multiple stations, all stations must be wired with the same
polarity. It does not matter which wire from the transformer is connected to the C terminal, but the
same wire must be connected at all stations. Failure to observe proper polarity may result in a
damaged transformer which will not be covered by any warranty.
