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Change Trigger Level
Trigger Level icon: User can also drag the trigger icon
on screen to adjust the trigger level. Double click
trigger icon to set trigger level to the vertical midpoint between the peaks of the trigger signal.
4.9.2
Capturing a Single-Shot Signal
To capture a single event, it needs to gather some pre-test knowledge of the signal in order to set up the trigger level
and slope correctly. For example, if the event is derived from 3.3V COMS logic, a trigger level of 1.2 or higher Volts
should work on a rising edge.
Do these steps as follows:
1. Set the probe and the channel attenuations to “x10”.
2. Set up the trigger in the Trigger Menu, or in the Trigger Setting window.
(1) Adjust the Trigger Mode to Edge.
(2) Set the Trigger Sweep to Single.
(3) Set the Trigger Source to CH1.
(4) Set the Trigger Slope to “+” which means you select the rising edge.
(5) Adjust the Volt/Div and the time base in a proper range for the signal.
(6) Drag the trigger level sign on the waveform display screen to proper position. It ally higher a little above the
normal level.
(7) Click START button to start capturing. When the trigger conditions are met, data appears on the display
representing the data points that the oscilloscope obtained with one acquisition.
This function helps to capture the signal occurrence easily, such as the noise with large amplitude; set the trigger
level higher a little above the normal level and press and wait. When noise occurs, the instrument will record the
waveform before and after the trigger.
4.10
Math and FFT
4.10.1
MATH
Click “Setup->MATH” to set MATH channel.
The MATH Setting window:
