3 Spectrum Analyzer Mode
3.5 ACP Measurement
Dependencies Does not appear in Spectrum Analyzer Mode in VXT model M9420A
Preset
Modes, Instruments Value
SA, WCDMA, LTEAFDD, LTEATDD, MSR
ACCuracy
5G NR
NORMal
5G NR in VXT models M9410A/11A/15A
ACCuracy
State Saved Saved in instrument state
Range
NORMal|ACCuracy
Points
Sets the number of points taken per sweep, and displayed in the traces. The current
value of points is displayed parenthetically, next to the sweep time in the lower-right
corner of the display. Using more points provides greater resolution. Using fewer
points compacts the data and decreases the time required to access a trace over the
remote interface.
Increasing the number of points does not increase the sweep time. However, it can
slightly impact the trace processing time and therefore the overall measurement
speed. Decreasing the number of points does not decrease the sweep time, but it
may speed up the measurement, depending on the other sweep settings (for
example, in FFT sweeps). Fewer points will always speed up the I/O.
Due to minimum sweep rate limitations of the hardware, the minimum sweep time
available will increase above its normal value of 1 ms as the number of sweep points
increases above 15001.
Changing the number of sweep points has several effects on the instrument. Since
markers are read at the point location, the marker reading may change. The sweep
time resolution changes. Trace data for all the traces is cleared and, if Sweep is in
Cont, a new trace is taken. If any trace is in average or hold, the averaging starts
over.
Because of sweep time quantization issues, the knob and up/down keys cannot be
used to adjust the number of points.
When in a split screen display each window may have its own value for points.
When sweep points is changed, an informational message "Sweep points changed,
all traces cleared" is displayed and in 5G NR Mode, Auto Sweep Points is set to OFF
(0).
Remote Command
[:SENSe]:ACPower:SWEep:POINts <integer>
[:SENSe]:ACPower:SWEep:POINts?
Example
:ACP:SWE:POIN 500
1106 Spectrum Analyzer Mode User's &Programmer's Reference