HP 53131A, 132A manual Overview of Command Types and Formats, Common Command Format

Chapter 3 Programming Your Universal Counter for Remote Operation

Elements of SCPI Commands

Overview of Command Types and Formats

There are two types of HP 53131A/132A programming commands: IEEE 488.2 Common Commands and Standard Commands for Programmable Instruments (SCPI). The IEEE 488.2 Common Commands control and manage communications between the HP 53131A/132A and the controller or personal computer. The SCPI commands control instrument functions. The format of each type of command is described in the following paragraphs. (Refer to

Chapter 2, “Command Summary ,” for SCPI conformance information.)

Common Command Format

The IEEE 488.2 Standard defines the Common commands as commands that perform functions like reset, self-test, status byte query, and identification. Common commands always begin with the asterisk (*) character, and may include parameters. The command keyword is separated from the first parameter by a space character. Some examples of Common commands are as follows:

*RST *IDN? *RCL 1

SCPI Command and Query Format

SCPI commands perform functions like instrument setup. A subsystem command has a hierarchical structure that usually consists of a top level (or root) keyword, one or more lower-level keywords, and parameters. The following example shows a command and its associated query:

:INPut:COUPling AC :INPut:COUPling?

INPut is root-level keyword with COUPling the second level keyword, and AC is the command parameter.

Programming Guide 3-7