54 Keysight FieldFox Handheld Analyzers Service Guide
Theory of Operation
Analyzer System Operation
5-
Analyzer System Operation
The FieldFox analyzer is capable of both network analyzer (NA) and spectrum
analyzer (SA) functions.
— Full two port NA functions are supported by the hardware.
Model and option combinations determine available functionality.
— SA functions are supported by the hardware on Port 2.
Model and option combinations determine available functionality.
— A temporary CFG option is available to enable full functionality when
needed for service operations. Details on the CFG option are provided in the
N7841A TME help.
See Figure 5-1 for a simplified block diagram of the overall RF analyzer
system.
All FieldFox analyzers covered by this manual have the same hardware.
Options to increase functionality are enabled via licenses, additional hardware
is not required.
Functional Groups of the Analyzer
The operation of the analyzer can be separated into two major functional
groups. Each group consists of assemblies that perform distinct functions.
Some of the assemblies are related to more than one group, and both groups,
to some extent, are interrelated and affect each other's performance.
The major functional groups are:
— Front Panel Group
— Measurement Group
Front Panel Group
The front panel group consists of the following:
— A2 LCD Assembly
— A3 Front Panel Interface Board
Measurement Group
The measurement group consists of the following:
— A4 RF Board
— A5 System Board
— A6 SOM Board
— A7 Real Time Clock Board
— Main Battery
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