Philips VL3015LT Service Manual page 30

❋
VARI LITE - VL3015LT S
• Low value - 0 volts, or up to approximately 0.2 volts.
Notes regarding specific mechanisms:
• The four color mixers will read high when the tab is in the optical sensor.
• The fixed color wheel will read low when the magnet is at the sensor and high at other times.
• The optical sensor will read high when the sensor is closed, or the tab is in the sensor.
• 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.
• Tilt sensor will 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 VL3015LT 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.
12
L S
POT UMINAIRES ERVICE
M
ANUAL
02 .9 698.00 10 0