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bandwidth of the notch (or the equivalent quality factor, often referred to as the Q-
factor) can also be adjusted. In simple terms, the Q factor is the centre frequency/
bandwidth, and defines how wide the notch is, a higher Q factor defining a narrower
("higher quality") notch.
Optimizing the Q factor requires some experimentation but in general a value of 5 to
10 is in most cases a good starting point.
The
Centre Frequency
is specified in Hz in the range 0 to 10000.
The
Q Factor
is specified in the rage 0.1 to 100.
Closed Loop Position Demand Output (X Out/Y Out) Settings
- These parameters are
applicable only when operating in closed loop mode, and set the sense and gain of
the feedback signals from the detector array.
Feedback Sense
- The default setting for these parameters is Positive, i.e. the signals
are +ve when the beam is in the top and left hand quadrants and -ve when in the
bottom and right hand quadrants. If Negative is selected, then the sense is reversed.
Notes
See Section 4.5. or Section 5.2. for more information on the Position
Demand Feedback Sense.
