elektraLite MY 575w - Manual (Page 6)

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５ - MY575 WASH
DMX-512 Control Connection
Connect the provided XLR cable to the female 3-pin XLR output of your Elektralite CP20 or other DMX
controller. The other end should be connected to the male 3-pin XLR input of MY575w. You then daisy-chain
out of the first MY575w to the next MY575w. Never “Y” split the DMX connection.
If you need more cable, then it should be two core, screened cable fitted with a 3 pin XLR input and output
connectors. Please refer to the diagram below.
DMX-512 connection with DMX terminator
For installations where the DMX cable has to run a long distance or is in an electrically “noisy” environment, it is
recommended that a DMX terminator is used. This helps prevent corruption of the digital control signal. The
DMX terminator is simply a 3 pin XLR plug (male) with a 120 Ω resistor connected between pins 2 and 3. It is
then plugged into the output XLR socket of the last MY575w in the chain. Please see illustration below.
MY575 fitted with 5 pin XLRs
The MY575w can be fitted with 5 pin XLRs. The pin configuration is the same as the three pin connector.
So Pin 1 = ground, Pin 2 = Signal (-) and Pin 3 = Signal (+). Pins 4 and 5 are not used.
Projector DMX start address selection
All MY575w’s need be given a DMX starting address when using a DMX signal, so that the correct MY575w
responds to the correct control signals. This digital starting address is the channel number from which MY575w
starts to “listen” to the digital control information sent out from the Elektralite CP20 or other DMX controller.
The allocation of this starting address is done by setting the correct number on the display located on the base
of MY575w.
You can set the same starting address for all fixtures or group of fixtures, like all the MY575w’s in your plot, or
you can make different address for each individual fixture.
If you set the same address, all the fixtures will start to “listen” to the same control signal from the same
channel number. In other words, changing the settings of one channel will affect all the fixtures simultaneously.
If you set a different address, each unit will start to “listen” to the channel number you have set, based on the
quantity of control channels of the fixture. That means changing the settings of one channel will affect only the
selected fixture.
In the case of this MY575w, which is a 18 channel fixture, you should set the starting address of the first unit to
1, the second MY575w to 19 (18 + 1), the third to 37 (19 + 18), and so on.
Note:
After switching on, MY575w will automatically detect whether DMX 512 data is received or not. If the data is received, the display will show
"A.001"
or whatever the address is set to, like “A.019” If there is no data received at the DMX-input, the display flashes "A001" with the
actually set address. This situation can occur if:
- the 3 PIN XLR plug (cable with DMX signal from the controller) is not connected to the input of MY575w.
or
- the controller is switched off or defective.
or
- if the cable or connector is defective
or
- if the signal wires are swap in the input connector. In others words, pins 1, 2 and/or 3 are not the same at both ends. Believe it or
not this is very easy to do if the person making the cable does not look at the pin numbers in the connector. The numbers of the
pins and the color of the cable need to match. Don’t just “look” at the cable and assume they are correct!