DI-770 Oscilloscope provides five virtual instruments in one

DI-770 and WINDAQ/Scope Manual
Amplitude
The amplitude of the output signal can be adjusted in three ranges: not attenuated, -20 dB attenuated or -40 dB attenuated.
With the slider a voltage between 0 Volt and 12 Volt (or 0 Volt and 10 Volt, depending on the instrument) can
be set.
DC offset
It is possible to add a DC offset to the output signal. In the DC offset box there is a slider for the amplitude of the offset.
The button will set the DC offset back to zero.
When the signal shape is set to DC, the slider is used to toggle the polarity of the DC signal
Numerical input
All described functions can also be controlled using the keyboard. When the window is expanded, a small key pad is
located which enables entering all settings.
This key pad can be controlled by mouse but also with the keyboard of the computer. In that case, the window doesn't
need to be expanded.
The top four keys indicate which setting will be adjusted. The corresponding reading in the display will start blinking.
Also the numerical keys will be enabled and the required value can be entered. The input can be ended by pressing
the key.
The following keys are available:
Adjust the symmetry of the signal
Adjust the DC offset of the signal
The Function Generator
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