Keithley 2001 Operator's Manual page 213

•All math calculations are disabled.
•Buffer operation is disabled. A storage operation currently in process will be aborted.
•Auto-zero controls are set to the *RST default values.
•The acquisition method is set to normal.
•All operations associated with switching cards (scanning) are disabled.
This command is automatically asserted when the :MEASure? command is sent.
Programming example
:READ?
Format
:read?
Description
This command is typically used to acquire a post-processed reading after the instrument has been config-
ured by the :CONFigure command. The :CONFigure command places the instrument in a "one-shot"
measurement mode. Every time the :READ? command is then sent, a measurement conversion will occur
and the reading will be acquired.
When this command is sent, the following commands will be executed in the order that they are present-
ed:
:ABORt
:INITiate
:FETCh?
When :ABORt is executed, the instrument will go into the idle state if continuous initiation is disabled.
Otherwise, operation will re-start at the beginning of the Trigger Model.
If the instrument is in the idle state, :INITiate will take the instrument out of the idle state. If continuous
initiation is enabled (:INITiate:CONTinuous ON), then the :INITiate command will generate an error
and ignore the command.
The :FETCh? command will then simply acquire a "fresh" post-processed reading. See :FETCh? for
details. Note that an "Init ignored" error will not cancel the execution of the :FETCh? command.
Programming example
20 OUTPUT 716; ":read?"
30 ENTER 716; A$
40 PRINT A$
50 END
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2001-900-01 Rev. K / August 2010
OUTPUT 716; ":conf:volt:dc"!Perform :CONFigure operations.
10OUTPUT 716; ":conf:volt[:dc]"
Places Model 2001 in "one-shot" DCV function.
Performs the :READ? operations.
Addresses the Model 2001 to talk.
Displays the reading on the CRT.
IEEE-488 Reference
4-55