NEO STORMER QUAD, Руководство пользователя

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P. 7
- Neo Stormer Quad
English version
4. SETUP
Fuse Replacement
CAUTION! The Stormer Quad utilizes a high-output
switch-mode power supply with an internal use.
Under normal operating conditions, the fuse should
not require replacement. The fuse is field replace -
able, however it is an advanced procedure suited
to qualified individuals. Should your Stormer Quad
fuse require replacement, please contact your deal-
er for instructions.
Connecting A Bunch of Stormer Quad Fixtures
Follow the guide below to properly link fixtures.
Power the first fixture in the chain with a standard
cable (provided with fixture). Then jump each sub -
sequent fixture with a properly rated jumper cable.
Warning: do not power link more than (2) fixtures
in one single chain, electricaloverload may occur.
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 electro-
magnetic interference. For instance, Belden© 9841
meets the specifications for EIA RS-485 applica -
tions. 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
Cable Connectors
Cables must have a male XLR connector on one
end and a female XLR connector on the other end.
A Word on Termination: DMX is a resilient commu-
nication protocol, however errors still occasion-
ally occur. Termination reduces signal errors, and
therefore best practices include use of terminator
in all circumstances. If you experiencing problems
with erratic fixture behavior, especially over long
cable runs, a terminator may help improve perfor-
mance.
To build your own DMX Terminator:
Obtain a 120-ohm, 1/4-watt resistor, and wire it
between pins 2 & 3 of the last fixture. They are
also readily available from specialty retailers.
Caution: Do not allow contact between the com-
mon and the fixture’s chassis ground. Grounding
the common can cause a ground loop, and your
fixture may perform erratically. Test cables with
an ohm meter to verify correct polarity and to
make sure the pins are not grounded or shorted
to the shield or each other.
Before replacing a fuse, disconnect
power cord, Always replace with the
same type and rating of fuse