Aligna
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4D User Manual
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not to use the actual matrix for the next measurement, but to start with the unity OCL matrix.
(Click button "OCL=1".) Increase " PsdPiezoAmplifA " and "...B", and start a new measure-
ment.
After learning the Piezo OCL switch back "UnitsA" and "UnitsB" to "Volts", "mm", "mrad", or so.
(In near future we will supply you with an even more automated procedure, which does these
corrections on its own.)
10.3.11.11 Switching on the Piezo Servo
Switch the XY "Display" to "inputs and regulator".
When you switch on the regulation (only motors are enabled up to now), you see the red and
green dots (representing angle and position) going to the XY center. When enabling the Piezo
Servo, the red and green dot shout remain in the center, and a cyan and a yellow dot are
walking around: These are the piezo regulator outputs. You can observe the servos working if
you touch the mirror mounts slightly with your finger tip.
If the cyan and yellow dot exceed the blue rectangle (MoPiA threshold), the motor servo will
"help" the piezo servo, until the piezo servo outputs are again inside the blue "MoPiA thresh-
old" square.
10.3.11.12 Optimizing the Piezo Servo Parameters
In the case of oscillations or too slow piezo servo performance, the piezo servo parameters
have to be aligned.
((This procedure will be described in the next version of this manual.))
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