Keysight M9421A - Page 304

3 WLAN Mode
3.2 Channel Power 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 to the user 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 will change. Trace data for all the traces will be cleared and, if
"Sweep/Measure" on page 1856 is Cont, a new trace taken. If any trace is in average
or hold, the averaging starts over.
Due to 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 is displayed, "Sweep
points changed, all traces cleared."
Remote Command
[:SENSe]:CHPower:SWEep:POINts <integer>
[:SENSe]:CHPower:SWEep:POINts?
Example
:CHP:SWE:POIN 501
:CHP:SWE:POIN?
Dependencies Not available when Signal ID is ON in External Mixing
Neither the knob nor the step keys can be used to change this value. If it is tried, a warning is given
Not displayed in Modes that do not support Swept
Couplings Whenever the number of sweep points change:
–
All trace data is erased
–
Any traces with Update Off also switch to Display Off (equivalent to switching from View to Blank
in older instruments)
–
Sweep time is re-quantized
–
Any limit lines that are on will be updated
–
If averaging/hold is on, averaging/hold starts over
The resolution of setting the sweep time depends on the number of points selected
Preset 1001
State Saved Saved in instrument state
Min 11
Max 20001
Annotation On second line of annotations, in lower right corner in parenthesis behind the sweep annotation
WLAN Mode User's &Programmer's Reference 304