User`s manual

Executing Coupled

Commands

Command coupling determines the AFG programming sequence. The

high-level sequence, based on the coupling groups, is shown in Figure 1-5.

Coupled commands must be contiguous and executed in the same program

statement. This is done by placing the commands in the same program line,

or by suppressing the end-of-line terminator until the last (coupled)

command has been sent.

To send multiple commands in a single line or in a single statement, the

commands are linked with a semicolon (;) and a colon (:). This is illustrated

in the following lines:

SOUR:ROSC:SOUR INT2;:TRIG:STAR:SOUR INT2

SOUR:ROSC:SOUR INT2;

:TRIG:STAR:SOUR INT2

Both techniques are used in the programs found throughout this manual.

Note that the semicolon (;) and colon (:) link commands within different

subsystems. Only a semicolon (;) is required to link commands within the

same subsystem (see “SCPI Command Structure” on page 26).

Note See page 31 for information on suppressing the end-of-line terminator.

Figure 1-5. High-Level E1445A Programming Sequence

28 Getting Started Chapter 1