User guide

Alternate Pattern Trigger Level
N O T E
This option applies for alternating patterns only.
Select this option to set the trigger level high whenever alternate pattern B is sent.
The trigger output for 1024-bit patterns looks as follows:
Data Out A A B A B B A
Trigger Out
N O T E
This pattern must be at least 1024 bits long.
Alternate Pattern Trigger Pulse
Select this option to send a trigger pulse whenever the pattern being sent changes
(A to B or vice versa). For patterns with a length divisible by 512, there is one trigger
pulse sent for every pattern repetition.
Data Out
Trigger Out
A B A B B
If the length of the pattern is not divisible by 512, a trigger is sent whenever the
pattern reaches a 512-bit RAM boundary.
Sequence Trigger
This checkbox becomes available after a user-defined sequence has been
downloaded to the pattern generator.
Click this checkbox to switch the Trigger/Ref Clock Out port to Sequence mode.
In Sequence mode, the Trigger/Ref Clock Out can generate a spike whenever the
execution of a block starts or restarts. Whether that happens for a particular block
or not is defined for each block individually in the SequenceExpression. See also
“Sequence Block Parameters” on page 102.
Setting up the Pattern Generator 4
Agilent J-BERT N4903B High-Performance Serial BERT 147