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Fluke 190-102 - Using Trigger Delay or Pre-Trigger

Fluke 190-102
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Triggering on Waveforms
Using Trigger Delay or Pre-trigger

Using Trigger Delay or Pre-trigger
<RXFDQEHJLQWRGLVSOD\WKHZDYHIRUPVRPHWLPHEHIRUH
RUDIWHUWKHWULJJHUSRLQWKDVEHHQGHWHFWHG,QLWLDOO\\RX
KDYHDKDOIVFUHHQGLYLVLRQVRISUHWULJJHUYLHZ
QHJDWLYHGHOD\
7RVHWWKHWULJJHUGHOD\GRWKHIROORZLQJ
5
MOVE
+ROGGRZQWRDGMXVWWKHWULJJHU
GHOD\
2EVHUYHWKDWWKHWULJJHULFRQ RQWKHVFUHHQPRYHVWR
VKRZWKHQHZWULJJHUSRVLWLRQ:KHQWKHWULJJHUSRVLWLRQ
PRYHVOHIWRIIRIWKHVFUHHQWKHWULJJHULFRQFKDQJHVLQWR
WRLQGLFDWHWKDW\RXKDYHVHOHFWHGDWULJJHUGHOD\
0RYLQJWKHWULJJHULFRQWRWKHULJKWRQWKHGLVSOD\JLYHV
\RXDSUHWULJJHUYLHZ7KLVDOORZV\RXWRVHHZKDW
KDSSHQHGEHIRUHWKHWULJJHUHYHQWRUZKDWFDXVHGWKH
WULJJHU
,QFDVHRIDWULJJHUGHOD\WKHVWDWXVDWWKHERWWRPRIWKH
VFUHHQZLOOFKDQJH)RUH[DPSOH
7KLVPHDQVWKDWLQSXW$LVXVHGDVWKHWULJJHUVRXUFHZLWK
DSRVLWLYHVORSH7KHPVLQGLFDWHVWKHSRVLWLYH
GHOD\EHWZHHQWULJJHUSRLQWDQGZDYHIRUPGLVSOD\
:KHQDYDOLGWULJJHUVLJQDOLVIRXQGWKHWULJJHUNH\ZLOOEH
OLWDQGWKHWULJJHUSDUDPHWHUVDSSHDULQEODFN
:KHQQRWULJJHULVIRXQGWKHWULJJHUSDUDPHWHUVDSSHDULQ
JUD\DQGVWKHNH\OLJKWZLOOEHRII
Figure 29. Trigger Delay or Pre-trigger View
)LJXUHVKRZVDQH[DPSOHRIDWULJJHUGHOD\RIPV
WRSDQGDQH[DPSOHRISUHWULJJHUYLHZRIGLYLVLRQV
ERWWRP

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