Technical data

Chapter 16 441
Spectrum Analyzer
Using the Interference ID Measurement
Spectrum Analyzer
6 For an Over The Air measurement,
connect an antenna and an external
filter to the RF input.
The external filter is necessary to
eliminate out-of-band signals that
would otherwise reduce the
dynamic range of measurements in
the band of interest. The effect of
the out-of-band signals is to raise
the noise floor, possibly hiding
some or all of the signal of interest.
However, the external filter is
optional in this set up:
• If you want to limit your search
to a specific band of interest,
then you should use the
external filter.
• If you want to search beyond a
specific band, then you can
leave the filter off.
Over the air measurement connection
Step Notes