ADInstruments AD8000 Series Instruction Manual page 124

AD8000 Series Spectrum Analyzer Instruction
Manual
The limit of occupied BW includes 3 items. Users can enable the limit line
and input the value with the limit dialog box.
Only if the master switch is on, all limit measurement value could be enabled
and set.
When the limit value of occupied BW is the lower limit of occupied BW, and
the value of occupied BW measurement is greater than the value, it is
qualified.
When the limit value of center spectrum is the absolute value of the center-
frequency offset, and frequency offset is less than the value, it is qualified.
When the value of channel power measurement is between the upper and
lower limits, it is qualified.
The final result is passed only if all measurement items are qualified.
Qualified, unqualified and disable are marked by green, red and white in
color.
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Fig. 3-99 Limit Setting