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Table of Contents
2-1
INTRODUCTION . . . . . . . . . . . . . . . . . . . 2-3
2-2
690XXB/691XXB MAJOR SUBSYSTEMS . . . . . . 2-3
Digital Control. . . . . . . . . . . . . . . . . . 2-3
Front Panel . . . . . . . . . . . . . . . . . . . 2-4
Frequency Synthesis . . . . . . . . . . . . . . . 2-4
Analog Instruction . . . . . . . . . . . . . . . . 2-5
YIG, SDM, SQM Driver . . . . . . . . . . . . . 2-5
ALC/Modulation . . . . . . . . . . . . . . . . . 2-8
RF Deck . . . . . . . . . . . . . . . . . . . . . 2-8
Power Supply . . . . . . . . . . . . . . . . . . 2-8
Inputs/Outputs . . . . . . . . . . . . . . . . . 2-8
Motherboard/Interconnections . . . . . . . . . . 2-9
2-3
FREQUENCY SYNTHESIS . . . . . . . . . . . . . 2-9
Phase Lock Loops . . . . . . . . . . . . . . . . 2-9
Overall Operation . . . . . . . . . . . . . . . 2-10
RF Outputs 0.00001 to 65 GHz . . . . . . . . . 2-13
Frequency Modulation (691XXB only) . . . . . . 2-14
Analog Sweep Mode (691XXB only) . . . . . . . 2-14
Step Sweep Mode . . . . . . . . . . . . . . . . 2-15
2-4
ALC AND MODULATION. . . . . . . . . . . . . . 2-15
ALC Loop Operation . . . . . . . . . . . . . . 2-15
Amplitude Modulation (691XXB only) . . . . . . 2-18
Square Wave Modulation (691XXB only) . . . . 2-18
2-5
RF DECK ASSEMBLIES . . . . . . . . . . . . . . 2-19
RF Deck Configurations . . . . . . . . . . . . 2-19
YIG-tuned Oscillator . . . . . . . . . . . . . . 2-20
Power Level Control and Modulation . . . . . . 2-20
RF Signal Filtering . . . . . . . . . . . . . . . 2-25
0.01 to 2 GHz Down Converter . . . . . . . . . 2-26
0.01 to 2.2 GHz Digital Down Converter . . . . 2-27
Chapter 2
Functional Description
Summary of Contents for 680 C Series
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