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256 Chapter 5
Language Reference
MEASure Group of Commands
Figure 5-1 Measurement Group of Commands
If you need to repeatedly make a given measurement with settings other than the
factory defaults, you can use the commands in the SENSe:<measurement> and
CALCulate:<measurement> subsystems to set up the measurement. Then use the
READ? command or INITiate and FETCh? commands, to initiate the
measurement and query results.
Measurement settings persist if you initiate a different measurement and then
return to a previous one. Use READ:<measurement>? if you want to use those
persistent settings. If you want to go back to the default settings, use
MEASure:<measurement>?.
Read Commands
:READ:<measurement>[n]?
• Does not preset the measurement to the factory defaults. (The MEASure? and
CONFigure? commands reset the parameters to the default values.) It uses the
settings from the last measurement.
• Initiates the measurement and puts valid data into the output buffer. If a
measurement other than the current one is specified, the instrument will switch
to that measurement before it initiates the measurement and returns results.
• Blocks other SCPI communication, waiting until the measurement is complete
before returning the results
If the optional [n] value is not included, or is set to 1, the scalar measurement
results will be returned. If the [n] value is set to a value other than 1, the
selected trace data results will be returned. See each command for details of
what types of scalar results or trace data results are available. The binary data
formats should be used when handling large blocks of data since they are
smaller and faster then the ASCII format.