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Chapter 4, Using this chapter, Command types – HP E1368A User Manual

Page 48

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Chapter 4

HP E1368A/69A/70A Command Reference

Using This Chapter

This chapter describes Standard Commands for Programmable Instruments
(SCPI) commands and summarizes IEEE 488.2 Common (*) Commands
applicable to the Microwave Switch. See the HP 75000 Series B
Mainframe HP E1300A/E1301A User’s Manual
or the HP 75000 Series C
HP E1406 User’s Manual
for additional information on SCPI and common
commands. This chapter contains the following sections:

Command Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 47

SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . Page 50

IEEE 488.2 Common Commands . . . . . . . . . . . . . . . . . . . . . Page 70

Command Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . Page 71

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 sh`own below:

*RST

*ESR 32

*STB?

SCPI Command

Format

SCPI commands perform functions like closing switches, making
measurements, 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:

[ROUTe:]

CLOSe <

channel_list

>

SCAN <

channel_list

>

:MODE?

[ROUTe:]

is the root command,

CLOSe

and

SCAN

are second level

commands with parameters, and

:MODE?

is a third level command.

Chapter 4

HP E1368A/69A/70A Command Reference 47

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