3 Spectrum Analyzer Mode
3.2 Swept SA Measurement
limitations in the instrument or in the controlling computer, the result is still
considered valid.
Band Function Backwards Compatibility
To define the Band Power function, the ESA and PSA analyzers used Delta marker
functionality with two markers, for example, Marker 1 and its Reference Marker, as
shown below:
The marker modes known as Span Pair and Delta Pair (Band Pair in ESA) were used
to set two markers for the primary purpose of defining the band of a Band Power
function. The two markers were set by adjusting their span and center point (Span
Pair mode) or by adjusting their locations independently to directly define the Start
and Stop edges of the band (Band Pair/Delta Pair modes).
In X-Series, the introduction of adjustable-width Band Functions fundamentally
changes the way Band Power markers are controlled, by using a single marker to
completely define the function, as shown below:
346 Spectrum Analyzer Mode User's &Programmer's Reference
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