User Manual ＜ , ＞ : Triggers the oscilloscope when the source signal pulse width is less than or greater than the specified pulse width. 9. Press the Mode softkey, turn V0 to select the trigger mode (auto, normal), and press V0 to confirm. Auto : When the oscilloscope meets the trigger condition, it completes a trigger acquisition once; when the trigger condition is not met, it can run the acquisition waveform freely. Normal : When the oscilloscope meets the trigger condition, the input waveform is displayed; when the trigger condition is not met, the original waveform is displayed. 10.
Press the Holdoff softkey and turn V0 to set the time that the oscilloscope waits before a trigger to the next trigger, so that complex waveforms are displayed stably. 2.7.3. Video Trigger Video triggering can be used to capture the complicated waveform of most standard analog video signals. The trigger circuitry detects the vertical and horizontal interval of the waveform and produces triggers based on the video trigger settings you have selected. The series of scope support standard video signal field or line of NTSC (National Television Standards Committee), PAL (Phase Alternating Line). 1. Press the [Trig Menu] button on the front panel to enter the Trigger function menu. 2.
Press the Type softkey, then turn the Multifunctional Knob to select Video and push down the knob to confirm. 3. Press the Source softkey turn the Multifunctional Knob to select CH1~CH2 as the trigger source. 4. Press Polarity to select the trigger polarity (positive and negative). 5. Press the Standard softkey to select the desired video standard. The series of scope support the following video standards: PAL and NTSC. 6. Press the Sync softkey, then turn the Multifunctional Knob to select field or line. 7. Press the Line Num softkey and turn V0 to set the line number in the field to be triggered. 8.
Press the Mode softkey, turn V0 to select the trigger mode (auto, normal), and press V0 to confirm. Auto : When the oscilloscope meets the trigger condition, it completes a trigger acquisition once; when the trigger condition is not met, it can run the acquisition waveform freely. Normal : When the oscilloscope meets the trigger condition, the input waveform is displayed; when the trigger condition is not met, the original waveform is displayed. 9. Press the Holdoff softkey and turn V0 to set the time that the oscilloscope waits before a trigger to the next trigger, so that complex waveforms are displayed stably. 2.7.4.
Slope Trigger The slope trigger looks for a rising or falling transition from one level to another level in the specified time range. In the series of scope, positive slope time is defined as the time difference between the two crossing points of trigger level line A and B with the positive edge as shown in the figure below. 23 / 67