To Set The Delay Calibration - Rigol DS4024E User Manual

Chapter 2 Vertical System Setting RIGOL

To Set the Delay Calibration

When using an oscilloscope for actual measurements, the transmission delay of the
probe cable may bring greater error (zero offset). Zero offset is defined as the offset
of the crossing point of the waveform and trigger level line relative to the actual
trigger position, as shown in the figure below.
Actual Trigger Position
Trigger Level
DS4000E allows users to set a delay time to calibrate the zero offset of the
corresponding channel.
Press CH1  Delay-Cal and turn the multi-function knob
to adjust the delay
time (the default is 0.00 s) at certain step. The adjustable range is from -100 ns to
100 ns. Pressing the multi-function knob can quickly reset the delay time to
0.00 s.
Note: The delay calibration time setting is related to the instrument model and the
current horizontal time base. The larger the horizontal time base is, the larger the
setting step will be. Take DS4024E as an example; when the horizontal time base is
50 ns, the step is 1 ns; when the horizontal time base is 2 μs, the step is 40 ns; when
the horizontal time base is greater than or equal to 10 μs, the delay calibration time
cannot be adjusted.
DS4000E User's Guide 2-15