3
Programming
224
Keysight 53147A/148A/149A Operating and Programming Guide
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 instrument model, an error is generated, and the command does not
execute.
– For
:POWer
,
<resolution>
must be defaulted or set to 0.01[dB].
“Descriptions of the Measurement Functions”
description of each of the measurement functions.
– Refer to
<function>
,
<parameters>
,
and
<source_list>
for each of the measurement functions.
COMMAND
:READ?[[:SCALar]:<function>]?
This query provides a method for performing a
:FETCh?
on
fresh
data.
COMMENTS
– This command is commonly used in conjunction with a
:CONFigure
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 instrument 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 instrument model, an error is generated, and the command does not
execute.
– For
:POWer
,
<resolution>
must be defaulted or set to 0.01[dB].
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