Trigger Setting:
Press the trigger setting key to enter the trigger setting menu.
Trigger Mode:
Press the trigger mode key to select automatic, normal or single mode, please refer to the content of
Triggle Mode. The corresponding indication light will be on according to current trigger mode.
Trigger Coupling:
Press the trigger coupling key to select DC, AC, high/low frequency suppression, and noise suppression.
For more details, please refer to the section of Trigger Coupling.
5.3 Pulse Width Trigger
The pulse width trigger determines the trigger time according to the pulse width, you can capture the eligible pulse by
setting the pulse width condition.
Press the TRIG MENU → type , select pulse width with the Multipurpose knob. User can also switch the trigger type by
continuously pressing the type button, and then press the Multipurpose knob to confirm.
At this time, the trigger setting is displayed at the upper right corner of the sreen, the trigger type is pulse
width, the trigger source is CH1, and the trigger level is 0.00V.
The Pulse Width Trigger Menu
Source:
Press the source button to select any of CH1, CH2, CH3, CH4, AC Line, EXT, and EXT/5. Thr selected source will be
displayed on the upper right corner of the screen.
Note: only selecting the channel with connected signals as the trigger source can obtain a stable trigger.
Condition:
Press the condition key to select ">", "<", "=".
(1) >: Triggers when the pulse width of the trigger signal is greater than the pulse width setting time.
(2) <: Triggers when the pulse width of the trigger signal is less than the pulse width setting time.
(3) =: Triggers when the pulse width of the trigger signal is equal to the pulse width setting time
Pulse Width Setting:
Adjust the pulse width setup time with the Multipurpose knob.
Pulse Width Polarity:
Press the pulse width polarity button to select positive/negative pulse width.
In the oscilloscope, the time difference between the two points where the trigger level intersects with the positive pulse is
defined as the positive pulse width; the time difference between the two points where the trigger level intersects with the
negative pulse is defined as the negative pulse width, as shown in the figure below.
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