DI-770 Oscilloscope provides five virtual instruments in one

DI-770 and WINDAQ/Scope Manual
The dialog has a grid in which for both channels the gain and offset calibration values can be adjusted. On the right
are the following buttons:
Continue
Cancel
Load values
Save values
Apply
The currently displayed values are set as the calibration values to use. Loading of a calibration
file at start-up will be disabled.
All changes (including the applied) are ignored and the calibration values which were used prior
to pressing the adjust cal. values button are restored.
A file dialog is presented in which a file can be selected with calibration values, which has to be
loaded and displayed in the grid.
A file dialog is presented in which a filename can be typed or selected to which the values currently
displayed in the grid can be saved.
Sets the current grid values as the calibration values to use. A one shot is done so the result is
displayed. The apply is not permanent until the Continue button is pressed.
Restore factory calibration factors
The DI-770 has a set of calibration factors in EEPROM which are read at power up of the software. If the calibration
factors are altered manually, the original values can be restored by pressing the Restore factory cal. button.
If loading a calibration file at startup is enabled, this will be disabled by pressing the Restore factory cal. button.
Loading a set of calibration values at start up
When a specific set of calibration values is made, it can be stored on disk. To use this file of calibration values at
power up, place a check mark in the Use cal. file check box at the Hardware page. If no file name was selected yet, a
file open dialog will appear in which a file with calibration values can be selected. If an illegal file is selected or cancel
is pressed the check box will be untagged.
Pressing the Restore factory cal. button will override the values from the file.
When loading calibration values from a file is enabled and a different file has to be loaded, this file can be selected by
pressing the Change cal. file button at the Hardware page. If cancel is pressed or an illegal file is selected, no changes
are made to the current selected calibration file.
Selecting the type of duty cycle
The software can use two different types of duty cycle calculation:
• The normal duty cycle setting displays the percentage of which the period is high.
• The inverted duty cycle setting displays the percentage of which the period is low.
Selection can be made on the Duty cycle page, by selecting one of the two radio buttons. The pictures next to the
radio buttons display the two types in a graphical way.
Active instruments at start up
At the Active instruments page a selection can be made which instruments have to be switched on at start up of the
software.
Place a check in the check boxes of the instruments that have to be switched on at start up of the software.
Note: The data logger can not be activated at the same time as one of the other instruments.
When at least one instrument is selected, it is possible to select a settings file that has to be loaded at start up as well.
Each single instrument can have its own settings file.
Selection of the file is done by pressing the Change file name button on the Active instruments page. In the appearing
dialog the file can be selected. The name of the selected file will be displayed in the Instrument settings file box.
Software
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