Keithley 6514, Instruction Manual

Page: 208 / 334

15-2 SCPI Signal Oriented Measurement Commands
The signal oriented measurement commands are used to acquire readings. You can use these
high level instructions to control the measurement process. These commands are summarized in
Table 15-1.
NOTE The readings acquired by these commands depend on which data elements are
selected (see “FORMat Subsystem” in Section 16 for details).
A) CONFigure:<function>
Configure Model 6514 for “one-shot” measurements
<function> = VOLTage[:DC] Configure voltage
CURRent[:DC] Configure current
RESistance Configure resistance
CHARge Configure charge
This command configures the instrument for “one-shot” measurements on the specified func-
tion. Each subsequent READ? command will then trigger a single measurement and acquire the
reading (see READ? for details).
If the instrument is in idle, this command will execute immediately. If the instrument is not
in idle, execution of the command will execute when the operation returns to the idle state.
When this command is executed, Model 6514 will be configured as follows:
• The specified function is selected.
• All controls related to the selected function are defaulted to the *RST values.
• The event control sources of the trigger model are set to immediate.
• The arm and trigger count values of the trigger model are set to one.
• The delay of the trigger model is set to zero.
• Model 6514 is placed in the idle state.
• All math calculations are disabled.
• Buffer operation is disabled. A storage operation presently in process will be aborted.
• Autozero is enabled.
This command is automatically asserted when the :MEASure? command is sent.
Programming example — The following command sequence selects and configures Model
6514 for “one-shot” measurements. Each subsequent READ? triggers a single measurement and
requests the reading.
CONF:VOLT ‘ Perform CONFigure operations.
READ? ‘ Trigger measurement and request reading.
Table 15-1
Signal oriented measurement command summary
Command Description Ref
CONFigure:<function> Places Model 6514 in a “one-shot” measurement
mode for the specified function. A
CONFigure? Queries the selected function.
FETCh? Requests the latest reading(s). B
READ? Performs an INITiate and a :FETCh?. C
MEASure[:<function>]? Performs a CONFigure:<function>, and a :READ?. D