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158 Agilent InfiniiVision 3000 X-Series Oscilloscopes Programmer's Guide

4 Commands Quick Reference

For example, <A> ::= <B> indicates that <A> can be replaced by <B> in any

statement containing <A>.

< > (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 Agilent 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

Agilent Technologies InfiniiVision 3000 X-Series Programmer's Guide

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