Functional Description
Dual-Channel Digital Oscilloscopes
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Functional Description
TRIGGER System
TRIGGER System
The trigger determines when the oscilloscope starts to acquire data and
to display a waveform.
XDO series has five trigger type : Edge, Video, Pulse, Slope, Alternative
Signal source
The source can be any signal connected to a channel BNC, to the EXT
TRIG BNC or the AC power line (available only with Edge triggers).
Edge Trigger
EdgeTrigger
function menu
Option Setting Description
Type
Edge
With Edge highlighted, the rising or falling edge of the
input signal is used for the trigger.
CH1
CH2
Triggers on a channel whether or not the waveform is
displayed.
EXT
Does not display the trigger signal; the Ext option uses
the signal connected to the EXT TRIG front-panel BNC
and allows a trigger level range of -1.2V to +1.2V.
EXT/5
Same as Ext option, but attenuates the signal by a
factor of five, and allows a trigger level range of +6V to
-6V.This extends the trigger level range.
Source
AC Line
This selection uses a signal derived from the power
line as the trigger source; trigger coupling is set to DC
and the trigger level to 0V.
Slope
Trigger on Rising edge of the trigger signal.
Trigger on Falling edge of the trigger signal.
Trigger on Rising and Falling edge of the trigger signal.
Auto
The waveform refreshes a high-speed whether the
trigger condition is satisfied or not
Normal
The waveform refreshes when the trigger condition is
satisfied and waits for next trigger event occurring
when the trigger condition is not satisfied.
Mode
Single
The oscilloscope acquires a waveform when the trigger
condition is satisfied and then stops.
Set up
Enter the “Trigger Setup Menu”.
