Basic Operation
DSO1000B Series HandHeld Oscilloscope User Manual 28
Noise Reject
HF Reject
LF Reject
Type Slope
Slope
Rising
Falling
Select the slope type of signal.
Mode
Auto
Select the type of trigger. The Normal mode is best for most
pulse width trigger applications.
Coupling
AC
DC
Noise Reject
HF Reject
LF Reject
Selects the components of the trigger signal applied to the
trigger circuitry.
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Vertical
Adjust the vertical window by setting two trigger levels.
Select this option and press F3 to choose V1 or V2.
When
=
≠
<
Select the trigger condition.
Time 20ns to 10.0sec Set the time span.
Overtime Trigger: In Pulse Width trigger, you may sometimes be puzzled with the long time for
trigger, as you do not need a complete pulse width to trigger the oscilloscope, but want the trigger
occurs just upon the overtime point. This is called Overtime Trigger.
Select the trigger source.
Polarity
Positive
Select to trigger on positive or negative pulses.
Mode
Auto
Normal
Overtime t
Coupling
AC
DC
HF Reject
LF Reject
Selects the components of the trigger signal applied to the
trigger circuitry.
Holdoff: To use Trigger Holdoff, push the HORI button and set the Holdoff Time option. The
Trigger Holdoff function can be used to generate a stable display of complex waveforms (such as
pulse trains). Holdoff is the time between when the oscilloscope detects one trigger and when it is
ready to detect another. During the holdoff time, the oscilloscope will not trigger. For a pulse train,
the holdoff time can be adjusted to let the oscilloscope trigger only on the first pulse in the train.
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