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Pulse Width Trigger can trigger normal or abnormal pulses that meet trigger conditions.
Slope Trigger uses the rise and fall times on the edge of signal for triggering.
Overtime Trigger happens after the edge of signal reaches the set time.
Alter Trigger, as a feature of analog oscilloscopes, gives stable displays of signals at two different
frequencies. Mainly it uses a specific frequency to switch between two analog channels CH1 and CH2 so
that the channels will generate Alter trigger signals through the trigger circuitry.
Trigger Mode
You can select the Auto or Normal mode to define how the oscilloscope acquires data when it does not detect a
trigger condition. Auto Mode performs the acquisition freely in absence of valid trigger. It allows the generation of
untriggered waveforms with the time base set to 80ms/div or slower. Normal Mode updates the displayed
waveforms only when the oscilloscope detects a valid trigger condition. Before this update, the oscilloscope still
displays the old waveforms. This mode shall be used when you want to only view the effectively triggered
waveforms. In this mode, the oscilloscope displays waveforms only after the first trigger. To perform a single
sequence acquisition, push the SINGLE SEQ button.
Trigger Coupling
Trigger Coupling determines which part of the signal will be delivered to the trigger circuit. This can help to obtain a
stable display of the waveform. To use trigger coupling, push the TRIG MENU button, select an Edge or Pulse
trigger, and then select a Coupling option.
Trigger Position
The horizontal position control establishes the time between the trigger position and the screen center.
Slope and Level
The Slope and Level controls help to define the trigger. The Slope option determines whether the trigger point is on
the rising or falling edge of a signal. To perform the trigger slope control, press the TRIG MENU button, select an
Edge trigger, and use the Slope button to select rising or falling. The TRIGGER LEVEL knob controls the trigger point
is on which position of the edge.
4.3
Data Acquisition
When you acquire an analog signal, the oscilloscope will convert it into a digital one. There are two kinds of
acquisition: Real-time acquisition and Equivalent acquisition. The real-time acquisition has three modes: Normal,
Peak Detect, and Average. The acquisition rate is affected by the setting of time base.
