Keithley 2701, Руководство пользователя

Страница: 311 / 478

10-24 Remote Operations Model 2701 User’s Manual
Short-form rules
Use the following rules to determine the short-form version of any SCPI command:
• If the length of the command word is four letters or less, no short form version
exists. Example:
:auto = :auto
These rules apply to command words that exceed four letters:
• If the fourth letter of the command word is a vowel (including “y”), delete it and all
the letters after it. Example
immediate = imm
• If the fourth letter of the command word is a consonant, retain it but drop all the
letters after it. Example:
format = form
• If the command contains a question mark (?; query) or a non-optional number
included in the command word, you must include it in the short-form version.
Example:
:delay? = :del?
• Command words or characters that are enclosed in brackets ([ ]) are optional and
need not be included in the program message.
NOTE For fastest response to commands, always use short forms.
Program messages
A program message is made up of one or more command words sent by the computer to
the instrument. Each common command is a three letter acronym preceded by an
asterisk (*). SCPI commands are categorized in the STATus subsystem and are used to
explain how command words are structured to formulate program messages.
STATus Path (Root)
:OPERation Path
:ENABle <NRf> Command and parameter
:ENABle? Query command
:PRESet Command
2701-900-01.book Page 24 Wednesday, August 3, 2011 9:43 AM