Blizzard Lighting Motif Fresco (Rev A) - Manual (Page 7)

Page 7
Motif Fresco™ Manual Rev. A Copyright (c) 2014 Blizzard Lighting, LLC
3. SETUP
Connecting A Bunch of Motif Fresco™ Fixtures
You will need a serial data link to run light shows using a DMX-512
controller or to run shows on two or more fixtures set to sync in
master/slave operating mode. The combined number of channels
required by all the fixtures on a serial data link determines the number
of fixtures the data link can support.
Fixtures on a serial data link must be daisy chained in one single line.
Also, connecting more than 32 fixtures on one serial data link without
the use of a DMX optically-isolated splitter may result in deterioration
of the digital DMX signal. The maximum recommended cable-run
distance is 500 meters (1640 ft). The maximum recommended
number of fixtures on a serial data link is 32 fixtures.
Data / DMX Cabling
To get a DMX signal into (or out to) standard 3-pin DMX cable, a
Blizzard DMX adapter cable set (CABLE Motif DMX SET) must be used
to convert the standard DMX plug to mini DMX plug (or vice versa).
And when linking between any Motif Series units, a 3-meter mini DMX
extension is available if nessecary for your application (CABLE Motif
Data3M). Both of these items are sold separately. Please contact your
authorized Blizzard Lighting dealer to order either of these items.
All of your data cables should be a high-grade cable that can carry a
strong signal, making them less prone to electromagnetic interference.
For instance, Belden© 9841 meets the specifications for EIA RS-
485 applications. Standard microphone cables will “probably” be
OK, but note that they cannot transmit DMX data as reliably over
long distances. In any event, the cable should have the following
characteristics:
2-conductor twisted pair plus a shield
Maximum capacitance between conductors – 30 pF/ft.
Maximum capacitance between conductor & shield – 55 pF/ft.
Maximum resistance of 20 ohms / 1000 ft.
Nominal impedance 100 – 140 ohms