Technical data

PRBS(n) This is the parameter required by the
PATTern command keyword.
N O T E
Any optional commands are enclosed in square brackets [ ] and any optional
characters are shown in lower case.
A colon indicates a change of level in the command hierarchy. Commands at the
same level in the hierarchy may be included in the same command line, if separated
by a semi-colon.
The bar symbol (|) indicates mutually exclusive commands.
To translate this syntax into a command line, follow the convention described
above. Remember, however, that the command line can be created in several
different ways. It can be created with or without optional keywords, and in a long
or short form. The following example gives three possible forms of the command
line; all are acceptable.
In long form:
SOURce1:PATTern:SELect PRBS7
In short form:
SOUR1:PATT:SEL PRBS7
With the optional commands removed:
PATT PRBS7
The long form is the most descriptive form of programming commands in SCPI. It
is used for the examples in this manual.
Sending Commands to the SerialBERT
Sending Commands to the Serial BERT - Concepts
A command is invalid and will be rejected if:
• It contains a syntax error.
• It cannot be identified.
• It has too few or too many parameters.
• A parameter is out of range.
4 SCPI Command Language
86 Agilent J-BERT N4903B High-Performance Serial BERT