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8.7.7
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can also use the corresponding multipurpose knob to set the upper/lower limit.
The lower time limit must be smaller than the upper time limit.
•
> <: triggers when the duration of the pattern is greater than the upper limit of
the preset time or smaller than the lower limit of the preset time. Click or tap the
input field of Upper to set the upper limit of the duration of the pattern, and the
range is from 1.01 ns to 10 s. Click or tap the input field of Lower to set the
lower limit of the duration of the pattern, and the range is from 1 ns to 9.9 s. You
can also use the corresponding multipurpose knob to set the upper and lower
limit. The lower time limit must be smaller than the upper time limit.
Trigger Mode
In Sweep, select Auto, Normal, or Single as the trigger mode. For details, refer to
Trigger Mode
descriptions in
Trigger Parameter Setting
Trigger Holdoff
You can refer to
noise rejection under this trigger type.
Trigger Level
Click or tap the Level input field to set the trigger level with the pop-up numeric
keypad. You can also use the front-panel trigger level knob or the corresponding
multipurpose knob to set the trigger level. For details, refer to descriptions in
Level
. The current trigger level is displayed in the trigger information label at the top
of the screen.
Timeout Trigger
In Timeout trigger, the oscilloscope triggers when the time interval (∆T) (the time
from when the rising edge (or falling edge) of the input signal passes through the
trigger level to the time from when the neighboring falling edge (or rising edge)
passes through the trigger level) is greater than the preset timeout value, as shown in
Figure 8.13
.
Time Out
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15
10
20
5
25
0
30
.
Noise Rejection
and
T
Figure 8.13 Timeout Trigger
Triggering the Oscilloscope
to set the trigger holdoff and
Time Out < T
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DHO1000 User Guide
Trigger
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