R o b o s c a n Pr o 1 2 2 0 - o p e ra t o r ’ s m a n u a l
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D I M M E R / S H U T T E R
High resolution, 0 to 100% smooth dimming is provided by the combined dimmer/shutter system.
Use high speed dimming if you wish to open or close the dimmer instantly. It is also possible to
strobe at different frequencies (1.6 to 15.6 Hz).
F O C U S
The Pro 1220 uses a motorized focus system which allows remote focusing at any time.
I R I S
The beam angle can be reduced from 18.5
°
down to 2.5
°
using the iris.
P R I S M A N D F R O S T
A separate effects wheel on the Pro 1220 allows you to insert a frost filter or multiplying prisms.
The frost filter will make a soft-edge image and the prisms will multiply the beam/image by 3 or 5
times depending on the prism selected. In addition the Pro 1220 XR offers a 'hot' CTC decreasing
the color temperature from 5600K to 3400K.
On the Pro 1220 RPR the prisms can be rotated in both directions at a wide range of speeds. It is
also possible to program an exact orientation of the prisms, as with the rotating gobos.
F A N
The Pro 1220 is efficiently cooled by means of axial fans. The speed on the two large fans at the
rear end of the fixture can be reduced from the controller if very quiet performance is required. Low
fan speed reduces the cooling of the fixture and should only be used when necessary and if the
ambient temperature is 23
°
C or lower. If the temperature inside the fixture exceeds a certain
level (the cut-off threshold), a built-in thermostat automatically powers off the lamp. This situation,
which should be avoided, may occur if the fixture is operated with low fan speed over a long period
of time in high temperature surroundings.
NOTE: To avoid accidentally switching the fan to low speed, the 'Fan Low' feature is not supported
unless you enable it on the control module. Please read section 5 - 'THE PRO 1220 CONTROL
MODULE'. Sending a 'fan low' command to the Pro 1220, without having enabled the 'Fan Low'
feature, will result in the Pro 1220 automatically switching from low to high fan speed after 3 min-
utes. After another 3 minutes the fan will resume low speed operation. This high/low cycle will
continue until a 'High Fan Speed' command is send to the fixture.