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E1442A Command Reference 51Chapter 3
Chapter 3
E1442A Command Reference
Using This Chapter
This chapter describes Standard Commands for Programmable
Instruments (SCPI) and summarizes IEEE 488.2 Common (*)
commands applicable to the E1442A 64-Channel Form C Switch
Module. This chapter contains the following sections:
• Command Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
• SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . .51
• SCPI Commands Quick Reference . . . . . . . . . . . . . . . . . . . . .80
• IEEE 488.2 Common Commands Reference. . . . . . . . . . . . . .81
Command Types
Commands are separated into two types: IEEE 488.2 Common
commands and SCPI commands.
Common Command
Format
The IEEE 488.2 standard defines the Common commands that perform
functions like reset, self-test, status byte query, etc. Common commands
are four or five characters in length, always begin with the asterisk
character (*), and may include one or more parameters. The command
keyword is separated from the first parameter by a space character.
Some examples of Common commands are shown below:
567(6567%"
SCPI Command
Format
The SCPI commands perform functions like closing switches, making
measurements, and querying instrument states or retrieving data. A
subsystem command structure is a hierarchical structure that usually
consists of a top level (or root) command, one or more lower-level
commands, and their parameters. The following example shows part of
a typical subsystem:
>5287H@
&/26HFKDQQHOBOLVW!
6&$1FKDQQHOBOLVW!
02'("
[ROUTe: ]is the root command, CLOSe and SCAN are second-level
commands with parameters, and :MODE? is a third-level command.