OmniSistem Q Scan - Manual (Page 12)

Before using , click to see how the pattern will be saved.
Starting with a perfect circle, slow down one wave then put it back. You should notice that the circle is no
longer perfect. This is because the waves no longer have a 25% head start relationship. Click to
fix this.
Changing the Phase can offer a whole world of interesting patterns, but always remember to click
to see the true pattern.
The Phase value of 0 gives one wave a 25% head start for a perfect circle. The value 64 will add another
25% putting both axis in exact phase.
The Chop Frequency breaks the circle into a series of On/Off gaps. If the Chop frequency evenly divides the
circle frequency then the gaps will appear stationary, Otherwise the gaps will move around the circle.
The Chop Duty determines how much of each gap is Laser On and Laser Off by percentage.
Set Chop duty = 50% (value=128) then move chop frequency until stationary gaps appear. Then notice that
increasing the Duty fills in the gaps.
NOTE: The most common problem in not seeing the laser is that the Chop Freq=0 (the beam is never
allowed on) or the Chop Duty=0 (the percentage of on time is zero)
(8) DMX Digital Value DMX Controller Fader 1
Generates patterns based on alias frequencies.
A circle is sampled at a frequency and the sampled points are connected with straight lines.
If a circle is sampled at 4 even intervals per circle then 4 points at 90 degrees each will produce a square.
The 1st fader controls the resulting image's overall size.
The 2nd fader controls the speed of the first sampler (X-frequency).
The 3rd fader controls the speed of the second sampler (Y-frequency).
The 4th fader controls the head start of the first sampler (Phase).
The 5th fader controls the laser On/Off speed (Chop Frequency).
The 6th fader controls the laser On versus Off percentage (Chop Duty).