Technical data

Chapter 12 12-9

Theory of Operation

Digital Control Theory

The digital control functional group consists of the following assemblies:

• A1 front panel

• A2 front panel processor

• A9 CPU

• A10 digital IF

• A16 rear panel

• A18 display

• A19 GSP

• A27 Inverter

These assemblies combine to provide digital control for the entire analyzer and the 85047A

or 85046A/B S-parameter test set. They provide math processing functions, as well as

communications between the analyzer and an external controller and/or peripherals.

Figure 12-3 is a simplified block diagram of the digital control functional group.