3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Option B2X 255 MHz path 300 MHz
Option B5X 510 MHz path 300 MHz
Option R10 1 GHz path 1.2 GHz
Option R15 1.5 GHz path 1.875 GHz
Option R20 2 GHz path 2.4 GHz
Option R40 4 GHz path 5.0 GHz
For all other configurations:
10 MHz path 15 MHz
Option B25 25 MHz path 45 MHz
3.1.8.2 Filter
Contains controls for IF filters.
Dependencies Appears only if you have the proper option installed in your instrument
Digital IF BW
Lets you select the type of IF filter (post ADC, digital filter) that is used. This is an
advanced control that normally does not need to be changed.
Digital IF BW is determined from Span only.
When Option DP2, B40, or wider IF Bandwidth option is installed, continuous
bandwidth setting is possible. For any other configuration, only fixed bandwidth
values are available and quantizing the bandwidth values becomes necessary.
When Option DP2, B40, or wider IF Bandwidth option is installed:
–
Continuous bandwidth setting is available in this configuration. Hence the
theoretical coupling equation above with span is used in all cases except when
the bandwidth reaches the maximum value, which in this case, is clipped to the
maximum value
–
When Digital IF BW state is Auto, Digital IF BW equals Span
–
When Digital IF BW state is Man, Digital IF BW is equal to or larger than Span,
but never smaller
There are coupling dependencies with the IF Path Selection parameter. The IF Path
Selection determines the maximum value and maximum resolution values. For
instance, even with the B40 and B1X options installed on a PXA, if the IF Path
IQ Analyzer Mode User's &Programmer's Reference 234
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