TESTING : PARTIAL RECALIBRATION
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Partial Recalibration
It is possible to recalibrate sections of the luminaire from a console. This allows greater flexibility and
speed by only forcing a recalibration on specific mechanisms. Partial recalibration values (on the
control channel) are as follows:
• Hold DMX value 102 for 3 seconds then 0 recals: Strobe, Color Wheel 1, Color Wheel 2, CYM,
CTO, and Dimmer.
• Hold DMX value 128 for 3 seconds then 0 recals: Zoom, Dimmer, Aperture, and Internal Lenses.
• Hold DMX value 140 for 3 seconds then 0 recals Dimmer and Strobe .
Sensor Testing
Most mechanisms within the VL3500™ Wash Luminaire are equipped with either optical or magnetic
sensors. The VL3500 Wash master control board (MCB) has labeled test points for reading DC
voltages at each sensor. Testing is best performed with a digital voltmeter for sensor readings or an
Oscilloscope for pan/tilt encoder readings. The values can be used to determine whether a circuit is
opening correctly or needs further troubleshooting.
Guidelines:
• The values will change depending on whether the sensor reading is Open or Closed.
• The values will be different depending on the type of sensor: optical or magnetic.
• As a general rule, if a change occurs from 5v to 0v or visa versa, then it is working.
• An Open reading occurs when the sensor is not aligned - tab not at sensor (typically a non-zero
DMX value).
• A Closed reading occurs when the sensor is aligned -tab in or at sensor (typically a zero DMX
value).
• Optical sensors read high when the sensor is Closed.
• Magnetic sensors read Low when the sensor is Closed.
• High value - 5 volts (typically 4.9 volts).
• Low value - 0 volts, or up to approximately 0.2 volts.
Notes regarding specific mechanisms:
• The two fixed color wheels and four color mixers read high when the tab is in the optical sensor.
• Pan and tilt sensors read high when the tab is in the sensor. The mechanism calibrates to the edge
and its tab covers 50% of travel. Pan and tilt encoders are best read with a scope to read the
encoder ticks.
Notes regarding lamp control:
• The douse command applies 5v to the out line. When the start command is given, this drops to 0v.
This can be measured at the MCB at the ballast connection. The Out pin of the 5-pin connector
should read 0v when the lamp is striking or On (Config>Lamp>Power>On). When the douse
command is given (Config>Lamp>Power>Off), the reading should changed to 5v. Likewise, the
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