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COMMAND REFERENCE 4 - 73
Description:
The MEASure? queries are part of the measurement instruction set. They provide
an automatic measurement of the signal characteristics as specified by the
<measure_function> part in the query header. In one operation, the instrument is
configured or set up, the acquisition initiated, and the result returned. Execution
of a MEASure? query aborts any pending operation.
The parameters provide additional information about the signal to be measured
or the result desired. The oscilloscope uses these parameter values to provide the
best possible settings for the specified task. When the parameters are defaulted,
the oscilloscope chooses its own settings, based upon the signal to be measured
and its own trade offs. After executing the MEASure? query, the instrument
settings are undefined.
The default :VOLTage node specifies that the characteristic to be measured
relates to a voltage signal. For example, the AC component of a voltage signal,
the rise time of a voltage signal, etc.
Restrictions:
A MEASure? query may be executed only when the oscilloscope is in the digital
mode (INStrument:SELect DIGital). The digital mode is selected after
*
RST.
Executing this query when the instrument is in analog mode generates execution
error -221,"Settings conflict; Digital mode required".
Example 1:
Send
→ MEASure:VOLTage:AC? 0.6,(@2) Measures AC- RMS on
channel 2, expected voltage
600 mV.
Read
← <the measured AC-RMS value>
Example 2:
Send
→ MEASure:VOLTage:RISE:TIME? (0.6),20,80,1E-2,(@2)
’
’Measures the rise time, expected voltage 600 mV,
’LOW ref. = 20%,
’HIGH ref. = 80%, expected time 0.01 seconds, channel 2.
’
Read
← <the measured rise time>
Errors:
When TRIGger:SOURce BUS is selected, the execution of a MEASure? query
generates execution error -214, "Trigger deadlock".