3 Spectrum Analyzer Mode
3.9 SEM Measurement
Notes Sub op code 1 is for BTS, 2 for MS. Default is BTS
Note that Sweep sub op code 2 is supported only in non-SA Modes. In SA Mode, Sweep sub op code
1 is used for both BTS and MS
Dependencies On non-sweeping hardware, this control is grayed out and the Auto/Man checkbox is invisible. The
read-only value shows the estimated sweep time
In those instruments, "Minimum Acquisition Time" on page 1692 is available
Couplings When the time is set manually, Auto is set to OFF
If state is Auto, coupled with Channel Detector selection, Channel Resolution BW, Channel Video BW
When set to Auto, the Time is automatically calculated
Preset Automatically calculated
ON
State Saved Saved in instrument state
Yes
Range
OFF|ON
Min Sweeping hardware
Depends on Channel "Sweep Type" on page 1694:
Sweep Type Min
Swept 1 ms
FFT 100 ns
Non-sweeping hardware: N/A
Max Sweeping hardware: 4000 s
Non-sweeping hardware: N/A
Backwards
Compatibility SCPI
[:SENSe]:SEMask:SWEep[1]|2[:TIME]
[:SENSe]:SEMask:SWEep[1]|2[:TIME]:AUTO
Minimum Acquisition Time
Available on non-sweeping hardware.
Specifies the minimum acquisition time for each “chunk” of the measurement result.
The instrument automatically divides Span into multiple chunks if needed.
Therefore, the total signal acquisition time for the entire carrier span is:
~(>~Minimum Acquisition Time) * (The number of chunks)
When in Auto, this parameter’s value is determined by other parameters, such as
Span, RBW and VBW.
You can manually increase this parameter value from this Auto value.
1692 Spectrum Analyzer Mode User's &Programmer's Reference
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