Functional Description Presented By Output Function - Fluke 5700A Series II Service Manual

5700A/5720A Series II Calibrator
Service Manual
These analog assemblies are interfaced to the Analog Motherboard assembly (A3). The
guarded digital bus generated by the guard crossing portion of the Regulator/Guard
Crossing assembly controls all analog assemblies except the Filter/PA Supply. The Guard
Crossing interfaces with the unguarded CPU assembly via a fiber-optic link. The
Transformer assembly, along with the filter portion of the Filter/PA Supply assembly and
the regulator portion of the Regulator/Guard Crossing assembly, create the system power
supply for all the analog assemblies. The Power Amplifier Supply portion of the
Filter/PA Supply assembly provides the high voltage power supplies required by the
Power Amplifier assembly. The amplitudes of these high voltage supplies are controlled
by circuitry contained on the Power Amplifier assembly.
Figures 2-2 and 2-3 are block diagrams for the analog section of the Calibrator.

2-9. Functional Description Presented by Output Function

This part of the theory section presents Calibrator operation from the perspective of each
output function. It describes which assemblies come into play, and how they interact. It
does not provide a detailed circuit description.
2-6