Vari Lite VL3015, Service Manual

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T
ESTING
: S
ENSOR
T
ESTING
0 2 . 9 6 7 9 . 0 0 1 0 0 17
2
• The gobo wheel reads low when the magnet is at the sensor.
• The gobo index/rotation reads low when the slot is in the 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 a PWM signal to the out line (which can be metered with a simple
DC voltage multi meter and will read approx. 4vdc). When the lamp on command is given, this
will change depending on which lamp level is selected within the menu or from the console (refer
to the VL3015 & VL3515 Spot Luminaire User's Manual). On at full power will be one-half (1/2)
PWM (which will meter at approximately 2vdc). On at Medium Power (1200W) will be no PWM
signal (0vdc). On at Standby power will be one-quarter (1/4) PWM (which will meter at
approximately 1vdc). When the douse command is given the reading should change back to the
full PWM (which again will meter at approximately 4vdc). Likewise, the standby circuit goes to
standby when approximately 3vdc is received on the standby line. Equally, if approximately 3vdc
is applied to the standby line, the lamp will go into standby mode, and if the full PWM is applied
to the out line, the lamp will douse.