Spectrum Emission Mask Measurements - Keysight X Series Measurement Manual

Making MSR Measurements
MSR Downlink Signal Measurement

Spectrum Emission Mask Measurements

This section explains how to make the Spectrum Emission Mask (SEM)
measurement on a MSR downlink signal. SEM compares the total power level
within the defined carrier bandwidth and the given offset channels on both
sides of the carrier frequency to levels allowed by the standard. Results of the
measurement of each offset segment can be viewed separately. For more
information on this measurement, see
Measurement Concepts" on page
For signal setting, see
Measurement Procedure
Step
1. Perform the common
configuration.
2. Initiate the Spectrum
Emission Mask
measurement.
You can choose to either recall the mask to set up limit automatically according to standard
TS37.141or setup the parameters manually. Go to
to "Setup the limit."
3. Recall the masks.
Keysight N9083A & W9083A Measurement Guide
"Setting the Downlink Signal" on page
Action
"Common Measurement
See
Procedure (Downlink)" on
page 16
.
Meas Spectrum
Press ,
Emission Mask
.
for manual setup.
Recall, Data, Mask then
Press
Open...
,a file open dialog appears.
Select the appropriate file under
masks\SEM_BS and click open. This
will apply the Offset/Limit settings
quickly. The other parameters will not
be changed. At the bottom of the
screen, there is a message to indicate
which mask file is recalled. In this
example, SEM_BS_MSR_BC2.mask is
used.
"Spectrum Emission Mask
60.
Notes
It is not necessary if you already did it in other
measurements.
The Spectrum Emission Mask measurement
result should look like
text window shows the reference total power
and the absolute peak power levels which
correspond to the frequency bands on both
sides of the reference channel. The cyan line is
the absolute limit line and the purple line is
the relative limit line. The limit lines are turned
on by default.
"Recall the masks." for using recall function. Go
14.
Figure 2-14
. The
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