AWG610 Arbitrary Waveform Generator User Manual 3-175
Waveform Programming Language
This section describes the Waveform Programming Language (WPL) syntax,
rules, and command descriptions. There are also a number of programming
examples at the end of this section.

Command Syntax

This manual uses the Backus-Naur Form (BNF) notation, shown in Table 3–46,
to describe commands.
Table3-46: BNF symbols and meanings
Symbol Meaning
<> Definedelement
[] Optional; can be omitted
…Previous element(s) may be repeated
Following are the general syntax rules for writing an equation file:
All spaces, line feeds, and tab codes are ignored unless in a string.
The concept of a line does not exist.
All data from a single quote (’) to the end of a line is regarded as a comment.
Alphabetical characters are case-insensitive unless in a string.
The concept of cursor does not exist. You always work with the whole
waveform.
File attribute functions are unavailable in a waveform expression.
The maximum length of a string is 256 characters, including spaces. Even if
two or more strings are linked by colons (:) in a string expression, the whole
length of the linked strings must not exceed 256 characters or an error will
occur.
The total length of strings in the whole equation program can be up to 1,000.
(The length is the sum of the number of characters of the string(s) plus a
character used as the internal terminal code.)

General Syntax Rules