Technical data

[SOURce[1]]:PATTern:SEQuence:DATA[?]
IAgilentN490xPG2.Sequence.Expression
SOURce[1]:PATTern:SEQuence:DATA <SequenceExpression>
This command is used for generating a user-defined sequence of up to four blocks.
The sequence is defined by a SequenceExpression, which is formulated in its own
language. This SequenceExpression can be set up with this command (which
performs also the syntax and semantic checks).
The SequenceExpression must be enclosed in parentheses.
Once you have created or changed a SequenceExpression, you can download the
sequence to the pattern generator with the command SOURce[1]:PATTern:SELect
SEQuence.
N O T E
If the SOURce[1]:PATTern:SEQuence:RCL command is used to recall a saved
sequence from a file, the present SequenceExpression is overwritten.
If a user-defined sequence is used, pattern tracking is automatically disabled (see
also “SENSe[1]:PATTern:TRACk[?] ” on page 252).
During the initialization phase of the user sequence, NRZ and RZ pulse formats
generate pure zeros, R1 generates pure ones.
The query returns the current SequenceExpression.
SequenceExpression for User-Defined Sequences
The SequenceExpression specifies:
• the sequence start condition
• the blocks, their contents, and triggers
• the loops
You can inspect the contents of the sequence expression in the Properties window
of the Sequence Editor.
The SequenceExpression uses the following keywords:
Version=
optional
Description=
optional
5 SCPI Command Reference
112 Agilent J-BERT N4903B High-Performance Serial BERT
IVI-COM Equivalent
Syntax
Description