14-8
Block Diagram Theory of Operation
Block Diagram 1
two analyzer modules provide gain, attenuation, and distribution functions of the audio
signals. The A19 Measurement assembly does the actual voltage measurement. The
interconnection of these modules is shown on Block Diagram 1.
The diagnostics for these modules are extensive. Like the hardware, the diagnostics have
been leveraged from the HP/Agilent 8920A and test more of the circuits than are actually
used in the HP/Agilent 8922. The diagnostic output from these modules documents the
exact circuits in the modules which are tested.