HP 53150A Series Programming Manual page 115

Chapter 4 Command Reference
:MEASure Subsystem
:READ?[[:SCALar]:<function>]?
COMMAND
This query provides a method for performing a :FETCh? on fresh data.
• This command is commonly used in conjunction with a :CONFigure
COMMENTS
command to provide a capability similar to :MEASure?, in which the
application programmer is allowed to provide fine adjustments to the
instrument state by issuing the corresponding commands between
:CONFigure and :READ?.
• When [:SCALar]:<function> is specified, the instrument retrieves the
specified result if it matches the current measurement type or can be
derived from the current measurement type.
• When [:SCALar]:<function> is omitted, the function specified/used by
the last :CONFigure, :MEASure, :READ, or FETCh is used, if
possible.
• Issuing this query while a measurement is in progress aborts the
current measurement and idles the measurement cycle before
initiating the desired measurement. The Counter then waits for the
measurement to complete. This has the effect of holding off processing
of further commands until the desired measurement completes. This
hold-off action can be canceled only by the completion of the
measurement, Device Clear, or power-on.
• If an <expected_value> parameter is outside the measurement
capabilities of the Counter model, an error is generated, and the
command does not execute.
• For :POWer, <resolution> must be defaulted or set to 0.01[dB].
• See "Descriptions of the Measurement Functions" on page 4-16 for a
description of each of the measurement functions.
• Refer to Table 4-2 for a summary of the <function>, <parameters>,
and <source_list> for each of the measurement functions.
Programming Guide 4-15