Chapter 5 185
Language Reference
CALCulate Subsystem
CALCulate:MARKers Subsystem
Markers can be put on your displayed measurement data to supply
information about specific points on the data. Some of the things that
markers can be used to measure include: precise frequency at a point,
minimum or maximum amplitude, and the difference in amplitude or
frequency between two points.
When using the marker commands you must specify the measurement
in the SCPI command. We recommend that you use the marker
commands only on the current measurement. Many marker commands
will return invalid results, when used on a measurement that is not
current. (This is true for commands that do more than simply setting or
querying an instrument parameter.) No error is reported for these
invalid results.
You must make sure that the measurement is completed before trying
to query the marker value. Using the MEASure or READ command,
before the marker command, forces the measurement to complete
before allowing the next command to be executed.
Each measurement has its own instrument state for marker
parameters. Therefore, if you exit the measurement, the marker
settings in each measurement are saved and are then recalled when
you change back to that measurement.
Basic Mode - <measurement> key words
• ACPr - no markers
• CHPower - no markers
• PSTATistic - markers available
• SPECtrum - markers available
• WAVeform - markers available
Service Mode - <measurement> key words
• PVTime - no markers
• SPECtrum - markers available
• WAVeform - markers available
cdmaOne Mode - <measurement> key words
• ACPr - no markers
• CHPower - no markers
• CDPower - markers available
• CSPur - markers available
• RHO - markers available
• SPECtrum - markers available
• WAVeform - markers available
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