Tektronix CSA7404B - Figure 3- -30: Reset Trigger Limitation 3

Triggering
CSA7000B Series & TDS7000B Series Instruments User Manual
3- 107
Triggering with Reset. You can specify a condition that, if it occurs before the B
trigger event, resets the trigger system. When the reset event occurs, the trigger
system stops waiting for the B event, and returns to waiting for an A event. You
can specify a Reset when the B trigger event does not occur:
H before a timeout that you specify
H before an input signal that you specify enters a state that you specify
H before an input signal that you specify transitions in a direction that you
specify
NOTE. A minimum of 100 ns must exist between the B Event that triggers the
oscilloscope and any B-Event occurring after Reset becomes TRUE. Since any
number of intervening B-Events may occur, the 100 ns limit is usually not a
problem, except when the B-Event that triggers the oscilloscope immediately
precedes the Reset Event.
Reset becomes
TRUE
B--Event that
triggers the scope
First B--Event after
Reset
Reset
B--Event
100 Nanosecond minimum
Figure 3- 30: Reset trigger limitation