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Chapter 5 457
One-Button Measurement Functions
Meas Setup (Spectrum Emissions Mask—SEM)
One-Button Measurement Functions
5.22 Meas Setup (Spectrum Emissions Mask—SEM)
When the spectrum emissions mask measurement has been selected in the Measure menu
of the Spectrum Analysis Mode, this key displays the appropriate measurement setup
menu.
Spectrum Emissions Mask (SEM) measurement includes the in-band and out-of-band
spurious emissions. As it applies to W-CDMA (3GPP), this is the power contained in a
specified frequency bandwidth at certain offsets relative to the total carrier power. It may
also be expressed as a ratio of power spectral densities between the carrier and the
specified offset frequency band.
Key Path: Front-panel key
History: Updated with firmware revision A.03.00
Added with firmware revision A.02.00
5.22.1 Avg Number
Press Avg Number (On) to specify the number of measurement averages used when
calculating the measurement result. The average will be displayed at the end of each
sweep.
Key Path:
Meas Setup
State Saved: Saved in instrument state.
Factory Preset: 10 averages / Off
Range: 1 through 1000
Remote Command:
[:SENSe]:SEMask:AVERage:COUNt <integer>
[:SENSe]:SEMask:AVERage:COUNt?
[:SENSe]:SEMask:AVERage[:STATe] OFF|ON|0|1
[:SENSe]:SEMask:AVERage[:STATe]?
Example: SEM:AVER:COUN 15
SEM:AVER 1