Blizzard Lighting pixelstorm 240, User Manual

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PixelStorm™ 240 Manual Rev. A Copyright (c) 2012 Blizzard Lighting, LLC
3. SETUP
Fuse Replacement
With a philips head screwdriver, unscrew the fuse holder from its hous-
ing. Remove the damaged fuse from its holder and replace with exact
same type fuse. Insert the fuse holder back in its place and reconnect
power.
Connecting A Bunch of PixelStorm™ 240 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 mas -
ter/slave operating mode. The combined number of channels required
by all the fixtures on a serial data link determines the number of fix -
tures 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 link fixtures together you’ll need data cables. You should use data-
grade cables that can carry a high quality signal and are 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 distanc-
es. 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