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 me nu and to
activate triggering using both the A and B triggers. The light next to the
B Trig button indicates B trigger is active. Pu sh the B Trig button agai n
to retur n to the single A trigge r.
Bottom S ide Description
B Trigger After A
Time
Sets the oscilloscope to trigger on the
next B-trigge r event that occurs after
a specified period of t im e from the
A trigger. Use the general p urpose
knob to set the time value.
Set to Delay Time
(B→▼ )thenSet
(B→▼)to0s
Sets the B Trigger After A Time value
to the horizontal B →▼value, then
sets B →▼ to zero seconds. B
→▼is the d elay 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 e v ents count to 1.
Source
Coupling
Slope
Level
Sets Source , coupling, slope, and
level for the B trigge r. These settings
are independent of similar settings
for the A trigger. The table on Edge
triggering includes descriptions of
these menu item s. (See page 114.)
The trigger w ait time is the minimum time between the A and B triggers.
The trigger wait time is not the same as the h orizontal delay time. You
can use the horizontal delay function to delay acquisition relative to any
trigger event, whether it is fro m the A trigger alo ne or from a trig ger
setup that involves both the A and B triggers.
The next figures s h ow the wait-for-ti
me and the wait-for-events
triggering, and how they relate to the horizontal delay time.
TDS3000C Series O scilloscope User Manual 111
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