Instruction manual

Chapter 4 Command Reference

:MEASure Subsystem

Programming Guide 4-13

• If an <expected_value> parameter is outside the measurement

capabilities of the Counter model, an error is generated, and the

command does not execute.

• See “Descriptions of the Measurement Functions” on Page 4-16 for a

description of each of the measurement functions.

• See Table 4-2 for a summary of the <function>, <parameters>, and

<source_list> for each of the measurement functions.

COMMAND :FETCh?[[:SCALar]:<function>]?

This query returns the measurement taken by the :INITiate or :READ?

command or the :MEASure query.

QUERY RESPONSE If no valid result is available, no result is returned, and error -230

is generated.

COMMENTS • 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 prevents further

commands from being processed until the measurement completes.

This hold-off action can only be canceled 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.