8 trigger modes for oscilloscopes
An oscilloscope is a very versatile electronic measuring instrument. It can convert electrical signals invisible to the naked eye into visible images, making it easier for people to study the changing processes of various electrical phenomena. It uses a narrow electron beam composed of high-speed electrons to hit a screen coated with fluorescent substances. on, small light spots can be produced. Under the action of the measured signal, the electron beam is like the tip of a pen, which can depict the change curve of the instantaneous value of the measured signal on the screen. In today's rapidly changing world, engineers need tools to solve measurement problems quickly and efficiently.
8 trigger modes for oscilloscopes
1. Edge trigger: Trigger on the trigger threshold of the edge of the input signal.
2. Pulse width trigger: The trigger time is determined according to the width of the pulse.
3. Slope trigger: judge based on the rise/fall time of the signal.
4. Video triggering: trigger any line or field on standard video signals.
5. Alternate triggering: Stable triggering of asynchronous signals.
6. Pattern trigger: Pattern trigger refers to a pattern composed of multiple channels. Each channel can determine whether the signal is 0 or 1 according to the preset threshold. The 0 or 1 of multiple channels can form a pattern. Oscilloscope That is to trigger the preset pattern.
7. Duration trigger: trigger within the specified time after the pattern conditions are met.
8. Trigger holdoff: Trigger holdoff means that the oscilloscope stops triggering response within a period of time after the previous trigger. Practical application examples: complex pulse trains, amplitude modulation signals.
Adjustable trigger sensitivity refers to the trigger sensitivity indicating the sensitivity of the oscilloscope to trigger signal recognition. When the waveform noise is large, the trigger sensitivity needs to be adjusted appropriately (0.1~1div). Effectively filter out noise that may be superimposed on the trigger signal to prevent false triggering.
