3. Theory of Operation
Functional Block Descriptions
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Functional Block Descriptions
This section provides you with information about how assemblies and
modules work together in groups to provide the functions and signals
described in the simplified functional description.
Figure 3-2 is an overall block diagram of the 5071A that shows all assemblies
and modules within the six functional blocks. The blocks and their
assembly/module components and connections are discussed and tabulated
in approximate order of signal flow within each block.
Instrument Control Block:
A3 Microprocessor
A7 Interface
A13 Front Panel
Instrument bus (I-bus)
Reference Oscillator/RF chain Block:
A19 Reference Oscillator (VCXO)
A9 Frequency Multiplier
A5 87 MHz PLL
A4 Digital Synthesizer
A18 9.2 GHz PLL
A15 9.2 GHz Microwave Generator Module
Cesium Beam Tube Block:
A2 CBT Controller
A16 High Voltage Supply Module
A17 CBT (Cesium Beam Tube)
Analog Signal Chain Block:
A14 Signal Amplifier Module
A6 Servo
Input/Output Block:
A10 Output Frequency Distribution Amplifier Module
A8 1 PPS
Power Supply Block:
LF1 Line Filter/Cable Assembly
T1 Toroidal Power Transformer
A1 Rectifier/Crowbar/Ext Dc Input Filter circuits
A11 Power Steering Logic
A12 Dc-Dc Power Converter Module
B1 24-V Internal Standby Batteries (Does not apply for Opt. 048).
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