User`s guide

104 5000 Series Oscilloscope User’s Guide
3 Triggering the Oscilloscope
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.
4 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<10 ns:
• greater than a time value (>).
For example, for a positive pulse, if you set t>10 ns:
• within a range of time values (><).
For example, for a positive pulse, if you set t>10 ns and
t<15 ns:
5 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:
Trigger
10 ns
10 ns
Trigger
10 ns10 ns
Trigger
12 ns
15 ns
10 ns