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Options
Settings
Comments
Noise Reject
HF Reject
LF Reject
Vertical
V1
V2
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
Press F4 to select this option. Turn the multi-functional knob to set the time span.
9.
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.
Options
Settings
Comments
Type
OT
Source
CH1
CH2
Select the trigger source.
Polarity
Positive
Negative
Select to trigger on positive or negative pulses.
Mode
Auto
Normal
Overtime
τ
Press F5 to select Overtime option and adjust V0 to set the time.
Coupling
AC
DC
HF Reject
LF Reject
Selects the components of the trigger signal applied to the trigger circuitry.
10.
Holdoff:
To use Trigger Holdoff, push the HORIZONTAL Menu button and set the Holdoff Time option by pressing F4. 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.
