Vari Lite VL800 EVENTWASH User Manual page 22

• At last unit, the DMX cable has to be terminated with a terminator. Solder a 120 1/4W resistor between
pin 2(DMX-) and pin 3(DMX+) into a 5-pin XLR-plug and plug it in the DMX-output of the last unit.
• Connect the unit together in a `daisy chain` by XLR plug from the output of the unit to the input of the
next unit. The cable can not branched or split to a `Y` cable. DMX 512 is a very high-speed signal. Inad-
equate or damaged cables, soldered joints or corroded connectors can easily distort the signal and shut
down the system.
• The DMX output and input connectors are pass-through to maintain the DMX circuit, when one of the
units' power is disconnected.
• Each lighting unit needs to have an address set to receive the data sent by the controller. The address
number is between 0-511 (usually 0 & 1 are equal to 1).
• The end of the DMX 512 system should be terminated to reduce signal errors.
• 5 pin XLR: Pin 1: GND, Pin 2: Negative signal (-), Pin 3: Positive signal (+), Pin 4/Pin 5: Not used.
MAINTENANCE
TROUBLESHOOTING
Following are a few common problems that may occur during operation.
The unit does not work - light and fan do not turn on.
• Check the connection of power and main fuse.
• Measure the mains voltage on the main connector.
Not responding to DMX controller
• DMX LED should be on. If not, check DMX connectors, cables to see if link properly.
• If the DMX LED is on and no response to the channel, check the address settings and DMX polarity.
• If you have intermittent DMX signal problems, check the pins on connectors or on PCB of the unit or the
previous one.
• Try to use another DMX controller.
• Check if the DMX cables run near or run alongside to high voltage cables that may cause damage or inter-
ference to DMX interface circuit.
CLEANING
Cleaning must be carried out periodically to optimize light output. Cleaning frequency depends on the environ-
ment in which the fi xture operates: damp, smoky or particularly dirty environments cause greater accumulation
of dirt on the fi xture's optics.
• Clean with soft cloth using normal glass cleaning fl uid
• Always dry the parts carefully
• Clean the external optics at least every 30 days
TECHNICAL SPECFICATIONS
Refer to the product data sheet available for download on www.vari-lite.com.
912400575012UM
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USER MANUAL