3 Spectrum Analyzer Mode
3.12 List Sweep Measurement (Remote Only)
The measurement presets to lists of length zero, which is the only way to set a list of
length zero. Once you have sent a command to set a particular list, the only way to
set it back to zero is with a preset.
NOTE
If you query the the list values when the length is zero, the analyzer will return
9.91 E+37 for any numerical parameter, which means “not a number” and is the
value usually returned for an undefined quantity. For an enumerated value, such
as Trigger Source, the analyzer will return “NONE”. The user should understand
that either means “List Sweep is using the current value from the Swept SA
measurement”
3.12.2.2 Differences with other measurements
The following are the major differences of the “List sweep” feature from other
measurements:
–
“List sweep” does not support front panel data display in order to meet
optimum high throughput.
–
The following remote commands are not supported for the List Sweep
Measurement, even though they are common SCPI commands for other
measurements. They are accepted without error, but do nothing when the
List Sweep Measurement is running:
–
INITiate:RESTart
–
INITiate:PAUSe
–
INITiate:RESume
–
The command MEASure:LIST? generates NaN.
–
The command SENSe:FEED EMIXer is accepted, but all elements of an
existing Frequency List will have the values clipped to the default value for
the External Mixer band that is selected. The Frequency List will not be
retained when changing inputs. When switching back to RF from External
Mixing all elements of an existing Freq List will be clipped to the RF default
frequency.
3.12.2.3 List Parameters
Non-List SCPI commands are not allowed while in List Sweep Measurement and
should not be sent while in the List Sweep measurement. In general, parameters in
List Sweep inherit the values they were set to in Swept SA, with a few exceptions:
–
Phase noise optimization is set to Fast Tune. See "Phase Noise
Optimization" on page 1940
Spectrum Analyzer Mode User's &Programmer's Reference 1935
To Next Page
Loading...
Need help?
General
