Technical data

N O T E
If the pattern generator and error detector are coupled, setting the pattern by using
the SOURce1:PATTern:SELect command will cause the pattern to be set in both the
pattern generator and the error detector. If the pattern generator and error detector
are not coupled, then the error detector pattern must be selected using the SENSe
[1]:PATTern:SELect command.
The query form returns the pattern's type in short form.
N O T E
If a user-defined pattern is selected and the query command is used, the response
is UPAT. The particular value of <n> or the name of the file specified in the command
form is not returned.
To get the path of a user pattern file, use the UFILe:NAME? command.
SEQuence: Downloads a user-defined sequence to the pattern generator and
enables it. Such a sequence can be defined with the command “[SOURce
[1]]:PATTern:SEQuence:DATA[?] ” on page 112 or loaded from a file with
“[SOURce[1]]:PATTern:SEQuence:RCL ” on page 117.
PRBS23P: A new additional special PRBS (2^23-1p). PRBS 2^23-1 named PRBS23P
with the polynomial X^23 + X^21 + X^16 + X^8 + X^5 + X^2 + 1.
[SOURce[1]]:PATTern:ZSUBstitut[:ZRUN][?]
IAgilentN490xPGOutput.ZeroSub (not IVI-compliant)
[SOURce[1]]:PATTern:ZSUBstitut[:ZRUN] MINimum | MAXimum | <NR1>
[SOURce[1]]:PATTern:ZSUBstitut[:ZRUN]?
<NR3>
ZSUB patterns are PRBN patterns, where a number of bits are replaced by zeroes.
The zero substitution starts after the longest runs of zeroes in the pattern (for
example, for PRBN 2^7, after the run of 7 zeroes). This command allows you to
define the length of the run of zeroes. For example, to produce 10 zeroes in a PRBN
2^7 pattern, three additional bits after the run of 7 zeroes must be replaced by
zeroes. The bit after the run of zeroes (the closing bit) is set to 1.
The following figure shows an example, where a run of 10 zeroes is inserted into
a PRBN 2^7 pattern.
5 SCPI Command Reference
106 Agilent J-BERT N4903B High-Performance Serial BERT
IVI-COM Equivalent
Syntax
Return Range
Description