Commands Quick Reference
5
Keysight P9241/42/43A Oscilloscopes SCPI Programmer's Guide
153
< > (Angle Brackets)
< > Angle brackets enclose words or characters that symbolize a program code
parameter or an interface command.
... (Ellipsis)
... An ellipsis (trailing dots) indicates that the preceding element may be repeated
one or more times.
n,..,p (Value Ranges)
n,..,p ::= all integers between n and p inclusive.
d (Digits)
d ::= A single ASCII numeric character 0 - 9.
Quoted ASCII String
A quoted ASCII string is a string delimited by either double quotes (") or single
quotes ('). Some command parameters require a quoted ASCII string. For example,
when using the Keysight VISA COM library in Visual Basic, the command:
myScope.WriteString ":CHANNEL1:LABEL 'One'"
has a quoted ASCII string of:
'One'
In order to read quoted ASCII strings from query return values, some programming
languages require special handling or syntax.
Definite-Length Block Response Data
Definite-length block response data allows any type of device-dependent data to
be transmitted over the system interface as a series of 8-bit binary data bytes. This
is particularly useful for sending large quantities of data or 8-bit extended ASCII
codes. This syntax is a pound sign (#) followed by a non-zero digit representing the
number of digits in the decimal integer. After the non-zero digit is the decimal
integer that states the number of 8-bit data bytes being sent. This is followed by
the actual data.
For example, for transmitting 1000 bytes of data, the syntax would be
#800001000<1000 bytes of data> <NL>
8
is the number of digits that follow
00001000
is the number of bytes to be transmitted
Содержание P9241
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Страница 44: ...44 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 2 Setting Up...
Страница 222: ...222 Keysight P9241 42 43A Oscilloscopes SCPI Programmer s Guide 7 Root Commands...
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