Keysight DSOX1202A, Руководство пользователя

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Triggers
11
Keysight InfiniiVision 1200 X-Series and EDUX1052A/G Oscilloscopes User's Guide 103
6 Press the pulse polarity softkey to select positive ( ) or negative ( ) polarity
for the pulse width you want to capture.
The selected pulse polarity is displayed in the upper-right corner of the display.
A positive pulse is higher than the current trigger level or threshold and a
negative pulse is lower than the current trigger level or threshold.
When triggering on a positive pulse, the trigger will occur on the high to low
transition of the pulse if the qualifying condition is true. When triggering on a
negative pulse, the trigger will occur on the low to high transition of the pulse if
the qualifying condition is true.
7 Press the qualifier softkey ( < > >< ) to select the time qualifier.
The Qualifier softkey can set the oscilloscope to trigger on a pulse width that is:
• Less than a time value ( < ).
For example, for a positive pulse, if you set t<20 ns:
• Greater than a time value ( > ).
For example, for a positive pulse, if you set t>20 ns:
• Within a range of time values ( >< ).
For example, for a positive pulse, if you set t>20 ns and t<30 ns:
8 Select the qualifier time set softkey ( < or > ), then rotate the Entry knob to set
the pulse width qualifier time.
The qualifiers can be set as follows:
• 17 ns to 10 s for > or < qualifier.
20 ns
20 ns
Trigger
20 ns
20 ns
Trigger
20 ns 30 ns
Trigger
25 ns