Pathway # 8861 - Manual (Page 2)

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•
All wiring must be in a continuous run,
daisy-chained, no “Tees” are permitted
•
“Stars” are permitted only in conjunction
with a repeater
•
Cable shield may be grounded at one end
only, preferably at the control console
•
Maximum cable length is 2,000 ft.
•
Receiving devices have male connectors,
transmitters have female
•
5 pin XLR type DMX connectors are stan-
dard:
Pin 1: Common
Pin 2: Data (-)
Pin 3: Data (+)
Pin 4: Talkback Data (-) (Optional)
Pin 5: Talkback Data (+) (Optional)
•
3 pin XLR type connectors are a non-
standard alternative:
Pin 1: Common
Pin 2: Data (-)
Pin 3: Data (+)
•
Wire must be Belden 9842 (120
Ω
), 9829,
(100
Ω)
or equivalent
•
A maximum of 32 DMX receiving devices
can be present on a single DMX line
•
The last DMX device on the line must be
terminated with a termination switch or re-
sistor with a value of 100 to 120 ohms
be-
tween pins 2 and 3.
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DMXIsolators can be rack mounted by using an
optional 8801 19" Rack Mount bracket kit. The kit
consists of two rack mount ears that are attached
to the DMXIsolator using the 6-32 screws included
in the kit.
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DMXIsolators are designed to work on voltages
from 100-240 volts AC. It will automatically sense
the incoming voltage and adjust accordingly. Be
sure to use the correct power cord if your location
requires something other than the 120V U-ground
cord included with the unit.
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Universal input (100-240V, 50/60Hz)
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All inputs on the Gray Interfaces DMXIsolator are
terminated.
DMX receiving devices such as dimmers or scrol-
lers are generally provided with a termination
switch, termination jumper or other means of con-
necting the required termination resistance across
the DMX line. Always make sure that the last re-
ceiving device connected to any output line is
properly terminated.