User's Manual

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.
128