#Drag data points graph igor pro manual#

This section is used to set the angular positions of polariser and analyser. If the link to mono box is checked, the automatically modulator follows the monochromators wavelength setting so that the peak phaseshift stays constant across the spectral range. In a spectroscopic system, the Controllers modulator calibration is used to set the modulator to the specified peak retardation at a given wave-length. The value for the peak phaseshift for the single wavelength configuration of the Picometer Ellipsometer should be 2.405 rad. Units: rad radians, frac fraction of the wavelength, volt control voltage, nm nanometers and eV electron volts). This is done through the two input fields whose options can be set using popup menus (Variables: peak ret peak phaseshift and wl wavelength. The Birefringence Modulator Section of the Picometer Ellipsometer Control panel allows you to set the Modulator retardation for a given wavelength and peak retardance amplitude, or by specifying the control voltage directly. Spectroscopic calibration data is stored on the Controller which it uses to calculate the Modulator gauge voltage for a given wavelength and peak retardance amplitude (or phase shift) setting. The Birefringence Modulator is controlled through a voltage from the Measurement Controller. The init button is used to initialise the monochromator this re-establishes communications if they were lost, or if the monochromator was not on when the Controller was started. The monochromator is driven to the selected position when the Go button is clicked. The monochromators wavelength position can be entered in nm or as photon energy in eV. This section is only available when the instrument is configured for spectroscopic measurements. There is no need to re-initialise unless all power to the drive unit is lost completely. The arm positions are tracked continuously, and hence after this initialisation has been performed for the first time the position tracking remains active, even if the Optical Table Drive is switched off at the front panel. Read the positions off the markings on the table enter and click OK. When init is clicked, a dialog box prompts for the approximate current position of the arms. After the table drive has been powered up, an initialisation must be carried out to re-establish the reference. In order for the Measurement Controller to know the actual arm position, it first has to drive the arm to a reference position, also called end stop. The init button is used to initialise the arm drives position tracking. The Optical Table has absolute angle encoders which allow absolute positioning of the arms with high accuracy. Continuous readout is stopped automatically when a value is entered into one of the position input fields. Click the read button for a single readout of both arm positions, or check the cont. The input fields also double as displays when reading the current arm position. When linked, if a value is entered into any of the two fields, it will be copied into the other field automatically. The input fields can be linked together with the link checkbox that is located above the fields.

To drive the table, enter the desired positions into these fields and click the Go button. Optical Table Control The main controls in the table arm drive section are the position input fields for the left and right arm. To find out about exporting and modeling the data click here. Make sure all the parameters are correct before you click the Measure button to acquire data. This panel is used to configure and take the measurement it is split into 10 parts 9 are shown below the tenth is the monochromator control section:Ĭlick on a part to find out more about what each input does.

#Drag data points graph igor pro manual#

For more demanding applications either consult the manual or email the SAF.įirst open Igor Pro, then open the PicoElli Control Panel in the bi menu. This is an extremely flexible and powerful instrument the method described below is what is required only for the simplest measurements. Acquiring data with the Beaglehole Picometer Ellipsometer