General calibration

Calibration data are transferred to each client on connection. It allow user to set correct scanning parameters. Calibration tab shows calibration data were obtained by measuring test samples. User can change following values:

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Max DAC, V - maximum DAC output voltage.

X,Y,Z

Gain - amplifying coefficient of hi-voltage amplifiers.

X,Y,Z

Sensitivity, nm/V - piezomanipulator sensivity on corresponding axis. If sensivity is set, for example, as $X_{Sensitivity}=X_{sens 0}$ and graphite lattice period obtained in calibration measurements is equal to $L_0$, and from tabulated data it is $L_1$ then correct sensitivity value can be found using this equation

$$X_{sens 1}=\frac{X_{sens 0}}{L_0}L_1.$$

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Inverse Z - user switch on this flag if piezomanipulator has a reverse polarization. To get a correct value consult with the supplier.

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Hysteresis - Path to hysteresis calibration file (see 2.1.2).

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Temperature - Path to temperature controlled sample table calibration file. File format described here - B.

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Variables - Path to variables initialization file. At the present moment this feature is on the development stage.