
MasterFadeuser manual
01.09.2014.
- 26 -
F
IXTURE
DMX
L
INKING
You will need a DMX data link to run light shows of one or more fixtures using a DMX-
512 lighting console. The combined number of channels required by all the fixtures on
a DMX data link determines the number of fixtures the DMX data link can support.
Important: Fixtures on a DMX data link must be daisy chained in one single line.
Tocomply with the EIA-485 standard no more than 32 devices should
beconnected on one data link. 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.
Maximum recommended DMX data link distance between fixtures: 300 meters (984 ft.)
DMX
DATA
CABLE
Use a Belden© 9841 or equivalent cable which meets the specifications for EIA RS-
485 applications. Standard microphone cables cannot transmit DMX data reliably over
long distances. The cable will have the following characteristics:
2-conductor twisted pair plus a shield
Maximum capacitance between conductors
– 30 pF/ft.
Maximum capacitance between conductor and shield
– 55 pF/ft.
Maximum resistance of 20 ohms / 1000 ft.
Nominal impedance 100
– 140 ohms