PeakTech 1280 Bedienungsanleitung Seite 82

Edge Trigger
Choose Mode as "Edge". An edge trigger occurs on trigger threshold value of input signal. Select
Edge trigger mode to trigger on rising edge or falling edge.
Set in Trigger menu:
1. Choose "Rise" to trigger on rising edge
Choose "Fall" to trigger on falling edge
2. Click the voltage value after "Trigger" to show slider bar. You can also drag "13. Trigger point" in
7. User Interface.
3. Choose Trig Mode:
Auto: Acquire waveform even no trigger occurs.
Normal: Acquire waveform when trigger occurs.
Single: When trigger occurs, acquire one waveform then stops.
4. Set Hold Off: When trigger occurs, acquire one waveform then stop (100 ns ~ 10 s).
Setting method: "+", "++", "+++" is the position of digit that will be changed. "+" represents the last
digit, "++" the middle digit, "+++" represents the first digit. Eg. When "+" is chosen, click
digit will be increased by 1.
Click "Reset" to set Holdoff time as default value (100 ns)
Set in Trigger window:
Force: Force to create a trigger signal and the function is mainly used in "Normal" and "Single" mode.
Video Trigger
Choose Mode as "Video" to trigger on fields or lines of NTSC, PAL or SECAM standard video signals.
1. Select video modulation: NTSC, PAL or SECAM.
2. Set trigger synchronization: Line, Field, Odd filed, Even filed or Line Number. When "Line Number"
is selected, you can set the line number.
3. Set Hold Off. About the setting method, refer to Edge Trigger.
Slope Trigger
Choose Mode as "Slope" to set the oscilloscope as the positive/negative slope trigger within the
specified time.
1. Select slope condition.
2. Set slope time.
3. Set the High level upper limit and Low level lower limit.
4. Set Trig Mode and Hold Off. About the setting method, refer to Edge Trigger.
Slew rate = (High level – Low level) / Settings
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