
- 36 -
6.5.9 Nth edge trigger
The oscilloscope triggers on the Nth edge that appears on the specified idle time. As figure shown
below, the oscilloscope should trigger on the second falling edge after the specified idle time and
the idle time should be set to P1/P2/P3/P4 < Idle Time < M. Wherein, M, P1, P2, P3 and P4 are
positive or negative pulse width participating in the counting.
In Nth Edge Trigger mode, the trigger setting information is displayed on bottom right of the
screen, for example,
, indicates that trigger type is Nth Edge, trigger source is
CH1, -150V is up level or low level threshold.
Nth trigger menu
:
Menu
Settings
Description
Trigger Mode
Nth Edge
Set vertical channel trigger type as Nth Edge trigger.
Source
CH1
CH2
CH3
CH4
Select CH1 as the trigger source
Select CH2 as the trigger source
Select CH3 as the trigger source
Select CH4 as the trigger source
Polarity
Edge
Trigger on the rising edge of the input signal when
voltage level meets the specified trigger level.
Trigger on the falling edge of the input signal when
voltage level meets the specified trigger level.
Configuration
Idle Time
Set idle time before the edge counting in Nth Edge
Trigger. Click
or
to set idle time, click
to
move cursor to choose which digit to be set. Available
range is 30ns-10s, default 100ns.
Edge Num
Set the edge number value of “N” in Nth Edge trigger.
Mode
Holdoff
Auto
Normal
Single
Holdoff
Sensitivity
Acquire waveform even no trigger occurred
Acquire waveform when trigger occurred
When trigger occurs, acquire one waveform then stop
100 ns - 10 s, click
or
to set time interval before
another trigger occur, click
to move cursor to
choose which digit to be set.
Set the trigger sensitivity.