Blizzard rokbox exa User Manual download pdf (Page 7)

Page 7

3. SETUP

Fuse Replacement

CAUTION! The RokBox™ EXA utilizes a high-output switch-mode

power supply with an internal fuse. Under normal operating condi-

tions,thefuseshouldnotrequirereplacement.Thefuseiseld

replaceable,howeveritisanadvancedproceduresuitedtoqualied

individuals.ShouldyourRokBox™EXAfuserequirereplacement,

please contact Blizzard Lighting for instructions, or to return your unit

for service.

Connecting A Bunch of RokBox™ EXA 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xturessettosyncinmas-

ter/slaveoperatingmode.Thecombinednumberofchannelsrequired

byallthexturesonaserialdatalinkdeterminesthenumberofx-

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xtures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xturesonaserialdata

linkis32xtures.

Data/DMX Cabling

Tolinkxtures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.

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

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Blizzard rokbox exa User Manual Page 7