To Use the A (Main) and B (Delayed) Triggers
B trigger point
Trigger
delay time
Waiting for nth
event (Where n=5)
Tr igger on B Event
A trigger
source
B trigger
source
A trigger
source
B trigger
source
B Trigger After Delay Time
Acquired waveform record
A trigger point
A trigger point
You can use the A Event (Mai n) trigger al one or combine i t with the B Event (Delayed) trigger to capture more complex signals.
B trigger point
Pretrigger
record
Posttrigger
record
H B-trigger delay time and horizontal delay time are independent functions. When
you establish a t ri gger conditi on using either the A t ri gger alone or the A and B
triggers together, you can also use horizontal delay to delay the acquisition by an
additional amount.
H When using t he B trigger, the A t rigger can be any of the followi ng types: Edge,
Glitch, Width, or Timeout. The B trigger type is always Edge type.
More Operating Tips:
The A trigger arms the oscilloscope.
Posttrigger acquisition starts on nth B event .
The A trigger arms the oscilloscope.
Posttrigger acquisition starts on the fi rst B
edge after the trigger delay time.
1
Set the A trigger t y pe and source in
the A Event (Main) tab of the t ri gger
control window.
2
Choose a functi on in the AāB Sequence tab of
the trigger control window.
4
Set the B trigger characteristics in the B Event
(Delayed) tab of the trigger control window.
Set the trigger delay time or the number
of B events, as appropriate.
3