DOUG FLEENOR DESIGN, Inc
Model 125EE Enhanced
2
DMX512 Isolated Splitter
Description:
The Enhanced Splitter includes all the features of our standard models with added protection to meet the
needs of harsh operating conditions. As with our standard splitters, all outputs are isolated from the input and
from the other outputs by optical couplers. Every output has its own power supply and line driver. For
protection against electrical storms, the Enhanced Splitter adds four transient absorbers on the input, three
on each output, and one on the power line. To protect against miswiring, the Enhanced Splitter has self
resetting fuses on the DMX512 input and outputs that protect the Splitter against damaging voltages up to 120
volts. Indicators on each output display termination and fuse status. Indicators on the input display signal
present and valid DMX.
The Enhanced Splitter allows connection of DMX receivers (dimmers, color changers, moving lights, etc.) in
a star configuration as opposed to a daisy chain configuration. In a star configuration, each control cable
is run to a central point, in this case the splitter. In a daisy chain configuration all the devices are connected
on one control cable, the output of one feeding the input of the next.
Connections:
Line Cord. The splitter is fitted with a chassis mounted male international power connector (IEC-320) A
detachable line cord is provided with a male parallel blade with ground (PBG) plug and a female IEC-320
connector. A wire bale is provided to lock the detachable power cord onto the chassis. The end of the wire
bale may be bent to provide a tight fit to the power cord.
The splitter is designed to work on any voltage between 100 and 240 volts, 50 or 60 Hz. Alternate power
cords are available to adapt the chassis mounted IEC-320 connector to local power outlets. If a choice of line
voltages are available, selecting the lower voltage will allow the splitter to run cooler.
DMX Input. The DMX signal is applied to the male XLR connector.
DMX Outputs. The DMX signal is available on all five female XLR outputs. Each output is separately
buffered. A short or failure on one output cannot affect another output.
Termination. For maximum reliability each DMX512 control run needs to be terminated. The input to the
splitter is automatically terminated. Each output that is used needs to be terminated at the end of its control
run. Sometimes termination is built into the receiver. In other cases a terminator should be plugged into the
feed-through connector of the last device. Unused outputs do not need to be terminated.
Indicators:
Power Indicator. There is a separate power indicator for each output. When power is applied all five power
indicators should illuminate.
DMX Indicator. The green DMX indicator will illuminate when a valid DMX512 signal is being received. The
DMX Validator
TM
circuit checks for proper break time, mark after break, and null start code. If any of these
timings are outside the DMX512 specification range the DMX indicator will not illuminate.
Signal Indicator. The green signal indicator will illuminate when any signal is being received. This indicator
is useful if the splitter is being used for a digital protocol other than DMX512. It can also be useful in
troubleshooting a DMX512 system because it will show that a signal is being received but (unless the DMX
indicator is on) there is an error.
(2 Seiten)
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