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When there are more than one data parameter, they are separated by

commas (,). Spaces can be added around the commas to improve readability.

Header Types

There are three types of headers:

•

Simple command headers

•

Compound command headers

•

Common command headers

Simple command header

Simple command headers contain a single

mnemonic. :AUToscale and :DIGitize are examples of simple command

headers typically used in this instrument. The syntax is:

Simple command headers must occur at the beginning of a program message;

if not, they must be preceded by a colon.

When program data must be included with the simple command header (for

example, :BLANk LCHan0), white space is added to separate the data from

the header. The syntax is:

Compound command header

Compound command headers are a

combination of two program mnemonics. The first mnemonic selects the

subsystem, and the second mnemonic selects the function within that

subsystem. The mnemonics within the compound message are separated

by colons. For example:

To execute a single function within a subsystem:

:<subsystem>:<function><separator><program data><terminator>

(For example :DISPlay:TEXT BLANk)

Common command header

Common command headers control IEEE

488.2 functions within the instrument (such as clear status). Their

syntax is:

*<command header><terminator>

No space or separator is allowed between the asterisk (*) and the command

header. *CLS is an example of a common command header.

Introduction to Programming

Program message syntax

HP 54620A Programmer's Guide

Other manuals for HP 54620A