Model 6485 Picoammeter Instruction Manual Getting Started 1-19
Optional command words
In order to be in conformance with the IEEE-488.2 standard, Model 6485 accepts optional
command words. Any command word that is enclosed in brackets ([]) is optional and does
not have to be included in the program message.
Query commands
Most command words have a query form. A query command is identified by the question
mark (?) that follows the command word. A query command requests (queries) the pro-
grammed status of that command. When a query command is sent and Model 6485 is
addressed to talk, the response message is sent to the computer.