Reference
B Trigger
To use the B trigger, the A trigger type must be Edge. Push the Trigger Menu and
then the B Trig buttons to show the B-trigger menu and to activate triggering
using both th
e A and B triggers. The light next to the B Trig button indicates B
trigger is active. Push the B Trig button again to return to the single A trigger.
Bottom Side Description
B Trigger After A
Time
Sets the oscilloscope to trigger on
the next B-trigger event that occurs
after a specified period of time
from the A trigger. Use the general
purpose knob to set the time value.
Set to Delay Time
(B→▼ )then
Set ( B →▼)to
0s
Sets the B Trigger After A Time
value to the horizontal B →▼value,
then sets B →▼ to zero seconds.
B →▼is the delay time from the B
trigger point to the expansion point
(center screen).
Set to Min Sets B Trigger After A time to
26.4 ns.
B Events
Sets the oscilloscope to trigger on
the n B-trigger event after the A
trigger. Use the general purpose
knob to set the event value.
B Trigger
After A
Set to Min Sets the B events count to 1.
Source
Coupling
Slope
Level
Sets Source, coupling, slope,
and level for the B trigger. T hese
settings are independent of similar
settings for the A trigger. T he
table on E dge triggering includes
descriptions of these menu items.
(See page 94.)
The trigger wait time is the minimum time between the A and B triggers. The
trigger wait time is not the same as the horizontal delay time. You can use
the horizontal delay function to delay acquisition relative to any trigger event,
whether it is from the A trigger alone or from a trigger setup that involves both
t
he A and B triggers.
The next figures show the wait-for-time and the wait-for-events triggering, and
how they relate to the horizontal delay time.
92 TDS3000C Series Oscilloscope User Manual
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