Technical data

456 Chapter 16
Spectrum Analyzer
Using the Spectrum Emission Mask Measurement
Spectrum Analyzer
When the SEM Measurement is turned On, the states of the following parameters
are stored for restoration when the SEM Measurement is turned
Off:
• Resolution bandwidth mode
• Frequency span
• Averaging mode
• Number of averages
• Upper limits
• Lower limits
The following parameters are then set to perform the measurement. Each time the
SEM measurement is turned
On, these parameters are set to the values as detailed
below. In addition the upper limits are reset to appropriate default values when the
SEM measurement is
On and the selected channel standard is changed.
•
Occupied bandwidth measurement turned Off
• Interference analysis measurement turned Off
• Resolution bandwidth mode set to Manual
• Resolution bandwidth set to 30 kHz
• Lower limit center, segment 1 and segment 2 set to Off
• Number of averages set to 10
6 Switch Noise Correction On or Off
according to your needs (W-CDMA
channel standard only).
a. [Noise Corr]
Each time you press the [Noise
Corr] menu key, the selected
option changes.
Noise Correction only takes effect
when measuring W-CDMA
channel standards. There is no
Noise Correction for any other
channel standards.
Agilent Technologies recommends
that at leaast 10 averages should be
used when Noise Correction is
being used.
Step Notes