Technical data

Chapter 16 455
Spectrum Analyzer
Using the Spectrum Emission Mask Measurement
Spectrum Analyzer
5 Switch the SEM measurement On.
a. [SEM]
Each time you press the [SEM]
menu key, the selected option
changes.
As soon as you switch the SEM
measurement
On, the SEM mask
(a stepped yellow line) will appear
on the screen. If no SEM mask
appears, check that SEM
measurements are supported for
your selected channel standard.
CDMA or 1xEV-DO signals only:
Each individual mask line segment
will be annotated with either a
green circle with ‘P’ inside it
(indicating that the limit line
segment has not been exceeded) or
with a red triangle with an ‘F’
(indicating the limit has been
exceeded and the test has failed).
WCDMA UTRA signals only: The
green circles with “P” (for a pass)
and the red triangles with “F” (for
a fail) are not displayed on
WCDMA SEM measurements.
Instead, if any segment of the mask
fails, the limit line segment in
question will thicken, and will
change from yellow to red and
white.
Step Notes