Service Guide N5227-90001 5-31
PNA Series Microwave Network Analyzers Theory of Operation
N5227A Digital Processing and Digital Control Group Operation
Digital Processing and Digital Control Group Operation
The digital processor and control group provides digital control for the entire analyzer. It provides:
• front panel operation,
• output to the display,
• math processing functions, and
• communications between the analyzer and an external controller or peripherals.
A block diagram of the digital control functional group is shown in Figure 5-9 on page 5-32.
The digital control functional group consists of two subgroups:
• Front Panel Subgroup
— A1 Front Panel Interface Board
— A2 USB Board
— A3 Display Assembly
— Keypad Assembly
— A18 System Motherboard
• Data Acquisition and Processing Subgroup
— A16 SPAM Board (Digital Description)
— A21 CPU Board
— A55 Hard Disk Drive
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