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Vertical System
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DHO1000 User Guide
To Specify the Amplitude Unit
Click or tap the channel status label at the bottom of the screen, and then the
Vertical menu is displayed. Click or tap the Unit drop-down button to select W, A, V,
or U. The default unit is V.
Changing the amplitude unit also changes the units of the functions related to the
channel accordingly.
To Adjust Bias
When you use an oscilloscope to make actual measurements, a small offset that arises
from the temperature drift of the component or external environment disturbance
may occur on the zero-cross voltage of the channel, which will affect the
measurement results of the vertical parameters. This series oscilloscope allows you to
set an offset calibration voltage for calibrating the zero point of the corresponding
channel so as to improve the accuracy of the measurement results.
Click or tap the Up/Down arrow icon at the right side of the input field of Bias to
increase or decrease the bias value. You can also click or tap the input field to set the
value with the pop-up numeric keypad. You can also use the corresponding
multipurpose knob to set the value.
The range of bias is related to the input impedance and the vertical scale.
TIP
If the zero-cross voltage of the channel has a larger amplitude offset that exceeds the
adjustable null range, please perform self-calibration for the instrument to ensure the
measurement accuracy. For details, please refer to
To Specify the Skew
When using an oscilloscope for actual measurement, the transmission delay of the
probe cable may bring relatively greater errors (zero offset). This series oscilloscope
allows you to set a delay time for calibrating the zero offset of the corresponding
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