Agilent Technologies J-BERT N4903B Manual de Serviço descarregar pdf (Página 122)

Table 24

Parameter Description

<block data> The data that describes the pattern (see

“[SOURce[1]]:PATTern:UFILe:DATA[?] ”

on page 119 for the description).

The use of the parameters can be best illustrated by an example. If we have an

alternate 16-bit pattern of 0s only, and we want to set the last four bits to 1s, the

IDATa command would appear as follows:

• If the data packing is 8:

SOURce1:PATTern:UFILe:IDATa B, <filename>, 12, 4, #11(&F0) (where (&F0)

is replaced by the ASCII representation of the value)

• If the data packing is 4:

SOURce1:PATTern:UFILe:IDATa B, <filename>, 12, 4, #11F

• If the data packing is 1:

SOURce1:PATTern:UFILe:IDATa B, <filename>, 12, 4, #141111

The response form returns <block data> at the specified location.

N O T E

See “Working with User Patterns in SCPI” on page 63 for more information on using

this command.

[SOURce[1]]:PATTern:UFILe[:LENGth][?]

IAgilentN490xLocalPatternfile.Length (IVI-compliant)

[SOURce[1]]:PATTern:UFILe[:LENGth] <filename>, <NR1>

[SOURce[1]]:PATTern:UFILe[:LENGth]? <filename>

This command sets the length of a user pattern file. The query returns the length

of the user pattern file. If an alternate pattern is selected (:USE APATtern), the

LENGth command sets the length of each half of the pattern.

Note that the :DATA command automatically sets the length of the file.

See “Working with User Patterns in SCPI” on page 63 for information on using this

command.

5 SCPI Command Reference

122 Agilent J-BERT N4903B High-Performance Serial BERT

IVI-COM Equivalent

Syntax

Description

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