User`s manual

Agilent E8462A Relay Multiplexer Command Reference 67
Chapter 3
Agilent E8462A Relay Multiplexer
Command Reference
Using This Chapter
This chapter describes the Standard Commands for Programmable Instruments
(SCPI) and IEEE 488.2 Common (*) commands applicable to the Agilent E8462A
256-Channel Relay Multiplexer. See the Agilent E1406A Command Module User's
Manual for additional information on SCPI and common commands. This chapter
contains the following sections:
• Command Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 67
• SCPI Command Reference . . . . . . . . . . . . . . . . . . . . . . . . . . page 70
• SCPI Command Quick Reference . . . . . . . . . . . . . . . . . . . . . page 115
• IEEE 488.2 Common Command Reference . . . . . . . . . . . . . page 114
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, and so on. 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:
*RST *ESE <mask> *STB?
SCPI
Command
Format
The SCPI commands perform functions like closing switches, opening switches,
scanning channels, 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 sub 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 the second level sub
commands with
<channel_list> as a parameter, and :MODE? is a third level
command.
[ROUTe:] is also an implied command and is, therefore, optional.