Technical data

Alternate patterns are composed of two halves. The half that is sent out can be
defined according to input at the Aux In port, triggered by the instrument internally,
or can be triggered by the user. This is defined according the mode.
The following graphics shows the dependencies for sending patterns.
User alternate pattern;
Trigger is set with
IAgilentN490xPGTrigger.Patterntype
APAT
IAgilentN490xPGTrigger.Mode
Pattern
IAgilentN490xPGOutput.
SelectData
Trigger sent according to
trigger ratio
(IAgilentN490xPGTrigger.
DivisionRate)
SOUR1:PATT:UPAT0:USE
ZeroSubstitut PRBN MarkDensity File
2
n
polynomial;
Trigger is set with
IAgilentN490xPGPosition.
Bit
2
n
polynomial;
Trigger is set with
IAgilentN490xPGPosition.
Bit
2
n
polynomial;
Trigger is set with
IAgilentN490xPGPosition.
Bit
2
n
-1 polynomial;
Trigger is set with
IAgilentN490xPGPosition.
SetPattern
PRBS
User straight pattern;
Trigger is set with
IAgilentN490xPGPosition.
Bit
STR
DividedClock
IVI-COM
Recommended Programming Techniques 3
Agilent J-BERT N4903B High-Performance Serial BERT 59
Triggering upon Alternate Patterns