Trigger
55
Set the Trigger Slope
Use the touchscreen controls to select
Slope
in the
Trigger
menu. Select one of the available options.
•
Rising
–
Only trigger on the rising edge
•
Falling
–
Only trigger on the falling edge
•
Alter
–
Trigger on both rising edge and falling edge
Figure 9.5
Edge Trigger
Slopes
Holdoff, coupling, and noise reject can be set in edge trigger, see the sections
for more details.
9.2.2
Slope Trigger
The slope trigger looks for a rising or falling transition from one level to another level in greater than or less than a
certain amount of time.
In the oscilloscope, positive slope time is defined as the time difference between the two crossing points of trigger level
A and B with the positive edge as shown in the figure below.
Figure 9.6
Slope Trigger
Configuring a Slope Trigger
To select Slope Trigger type:
1.
Press the Setup key or use the touchscreen controls to enter the
Trigger Menu
.
2.
Use the touchscreen to select
Type
.
3.
will appear.
–
Use the touchscreen to
Slope
.
4.
Use the touchscreen to toggle the
Slope
between
Rising
and
Falling
.
–
Rising
: Only trigger on the positive slope
–
Falling
: Only trigger on the negative slope
