Agilent Technologies InfiniiVision 5000 Series Guia do Utilizador descarregar pdf (Página 104)

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

Trigger

10 ns10 ns

Trigger

12 ns

15 ns

10 ns

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Agilent Technologies InfiniiVision 5000 Series Guia do Utilizador Página 104