Command Syntax
2-2
TDS3000, TDS3000B, and TDS3000C Series Programmer Manual
A command message is a command or query name followed by any information
the oscilloscope needs to execute the command or query. Command messages
may contain five element types, defined in Table 2--2 and shown in the example
in Figure 2--1.
Table 2- 2: Command Message Elements
Symbol Meaning
<Header> The basic command name. If the header ends with a question
mark, the command is a query. The header may begin with a
colon (:) character. If the command is concatenated with other
commands, the beginning colon is required. Never use the
beginning colon with command headers beginning with a
star (*).
<Mnemonic> A header subfunction. Some command headers have only one
mnemonic. If a command header has multiple mnemonics, a
colon (:) character always separates them from each ot her.
<Argument> A quantity, quality, restriction, or limit associated with the
header. Some commands have no argument while others have
multiple arguments. A <Space> separates arguments from the
header. A <Comma> separates arguments from each other.
<Comma> A single comma between arguments of multiple-argument
commands. It may optionally have white space characters
before and after the comma.
<Space> A white space character between command header and
argument. It m ay optionally consist of multiple white space
characters.
Comma
SAVe:WAVEform CH1,REF3
Header
Mnemonics
ArgumentsSpace
Command Parts
Figure 2- 1: Command Message Elements
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