Tektronix 070-8030-01 34 1780R-Series Service Manual, Table 31: Schematics and Circuit Board Assemblies (Cont.)

Theory of Operation
3–4 1780R-Series Service Manual
Table 3–1: Schematics and Circuit Board Assemblies (Cont.)
Diagram
Number Assembly Number
Assembly NameSchematic Name
32 Digital Shifter Oscillator A7
33 Horiz AFC & Post Regulators Oscillator A7
34 Diff Gain/Phase Alt Mode Switch Oscillator A7
35 Digital Recursive Filter Filter A15
36 Z-Axis Z-Axis A4
37 Timing Cursors Z-Axis A4
38 Timing Cursor Counters Z-Axis A4
39 CRT Display DAC Z-Axis A4
40 Scale Illumination & Trace Rotation Z-Axis A4
41 Vector High Volts Vector High Volts A3
42 Waveform High Volts WFM Hi V olts A16
43 Low Voltage Power Supply Low Volts A1
44 Vectorscope, Waveform, & Oscillator Interconnect A11
45 Z-Axis, Graticules, Vector HV, &
Power Supply Interconnect, Waveform, & Vector Grat Lights A11 A13
A14
46 MPU, & Front Panel Controls Interconnect A11