Spectrum Emission Mask - Keysight Technologies N9321C User Manual

Key Reference
Meas

Spectrum Emission Mask

Avg Number
Ref Channel
128
Spectrum Emission Mask 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. For WLAN, the reference
power is taken as the peak PSD in the signal, and all offset results
are also the peak PSD in that offset as opposed to the integrated
power.
Set Avg Number to On to specify the number of measurement
On Off
averages used when calculating the measurement result. The
average will be displayed at the end of each sweep. Setting
Avg Number to Off disables measurement averaging.
Key access: Meas > SEM
Meas Type Displays a menu to select a measurement reference type, Total Pwr
Ref or PSD Ref.
Key access: Meas > SEM
Total Pwr Ref When Total Pwr Ref is selected, the power in the
PSD Ref
Accesses the softkeys to change the reference channel settings.
Key access: Meas > SEM
Chan Integ BWSpecifies the integration bandwidth used in
Chan Span
Sweep Time
Auto Man
carrier is used as the reference in computing the
relative power values for the offsets.
When PSD Ref is selected, the mean power spectral
density of the carrier is used in computing the relative
power spectral density values for the offsets.
calculating the power in the main channel.
Specifies the span used in measuring the power in the
main channel.
Specifies the sweep time used in measuring the
power in the main channel.