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Schematics
33120A Block Diagram . . . . . . . . . . . . . . . . . 129
Mechanical Disasembly . . . . . . . . . . . . . . . . . 130
Floating Logic Schematic . . . . . . . . . . . . . . . . 131
Digital Waveform Data Synthesis Schematic . . . . . 132
System DAC Schematic . . . . . . . . . . . . . . . . . 133
Waveform DAC Schematic . . . . . . . . . . . . . . . 134
Filters Schematic . . . . . . . . . . . . . . . . . . . . 135
Sync, Square Wave, and Attenuator Schematic . . . . 136
Output Amplifier Schematic . . . . . . . . . . . . . . 137
Output Attenuator Schematic . . . . . . . . . . . . . 138
Earth Reference Logic Schematic . . . . . . . . . . . . 139
Power Supplies Schematic . . . . . . . . . . . . . . . 140
Display and Keyboard Schematic . . . . . . . . . . . . 141
33120-66521 Component Locator Diagram . . . . . . 142
33120-66502 Component Locator Diagram . . . . . . 143
You may notice parts labeled as “No Load” on several schematics.
These are parts that were included in the original design but were
removed later to enhance performance or reduce cost.
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