4-18
IM DL350-01EN
DC Offset Cancellation (DC Offset Cancel)
This function can be used to determine cursor measurement values, automatically measured values of waveform
parameters, and computed values by assuming the DC signal voltage measured during offset adjustment to be 0 V.
The adjustment range is ±30% of the measurement range. For example, if the vertical scale is set to 1 V/div, up
to 3 V can be assumed to be 0 V. Note that when the offset is adjusted, the measurable range changes.
In addition, if you change the measurement range during offset adjustment, the offset is measured when the
range is changed, and this new offset is used to determine the values. However, if you change the vertical scale
and the measured value falls outside ±30% of the measurement range, correct measurement will no longer be
possible. For example, if you are measuring a 5 V DC signal with the vertical scale set to 2 V/div, adjustment is
possible because the signal corresponds to 25% the measurement range. But, if you change the vertical scale to
1 V/div, the signal corresponds to 50% the measurement range, and therefore adjustment is not possible. When
DC offset adjustment is enabled, the display range channel number appears highlighted.
• ON
DC offset canceling is enabled.
• OFF
DC offset canceling is disabled.
• Execute
Executes offset adjustment.
1.00 V/div
Voltage 2.00 V
Position 0.00 div
OFF
CH1
CH1
Channel number of the display range
1.00 V/div
Voltage 0.00 V
Position 0.00 div
When Execute is specified or when
ON is specified after Execute
Measurable voltage range
+3 div
–
7 div
• The settings (ON state and the value adjusted with Execute) are not retained when the instrument is turned
off. If necessary, save the waveform data and setup data.
• This function can be used on voltage measurement modules 720211 (HS100M12), 720250 (HS10M12),
and 720254 (4CH 1M16).
4 Vertical Axis