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4.Advanced User Guidebook
28
through the trigger level is greater than the timeout time set.
Nth Edge Trigger: The oscilloscope triggers on the Nth edge that appears on the
specified idle time.
The eight trigger modes in Single Trigger are described respectively as follows:
1. Edge Trigger
An edge trigger occurs on trigger level value of the specified edge of input signal.
Select Edge trigger mode to trigger on rising edge or falling edge.
In Edge Trigger mode, the trigger setting information is displayed on bottom right of
the screen, for example, ，indicates that trigger type is edge,
trigger source is CH1, coupling is DC, and trigger level is 0.00mV.
Edge menu list:
Menu
Settings
Instruction
Single Mode
Edge
Set vertical channel trigger type as edge trigger.
Source
CH1
CH2
EXT
EXT/5
AC Line
Channel 1 as trigger signal.
Channel 2 as trigger signal.
External trigger as trigger signal
1/5 of the external trigger signal as trigger signal.
AC power line as trigger signal.
Coupling
AC
DC
HF
LF
Block the direct current component.
Allow all component pass.
Block the high-frequency signal, only low-frequency
component pass.
Block the low-frequency signal, only high-frequency
component pass. (LF menu is only for certain models)
Slope
Trigger on rising edge
Trigger on falling edge
Mode
Holdoff
Auto
Normal
Single
Holdoff
Reset
Acquire waveform even no trigger occurs
Acquire waveform when trigger occurs
When trigger occurs, acquire one waveform then stop
100 ns - 10 s, turn the M
knob to set time interval
before another trigger occur, press panel
button to move cursor to choose which digit to be set.
Set Holdoff time as default value (100 ns).
Trigger Level: trigger level indicates vertical trig position of the channel, rotate trig
level knob upward and downward to move trigger level, during setting, an orange red
dotted line displays to show trig position, and the value of trigger level changes at the
right corner, after setting, dotted line disappears.
2. Video Trigger
Choose video trigger to trigger on fields or lines of NTSC, PAL or SECAM standard
video signals.
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