HARDWARE LAB 16 · X/Y/Z VECTOR GENERATOR
DRAW WITH AN ELECTRON BEAM
Step through a vector list while the X and Y DACs steer the beam and the Z signal decides whether the phosphor should glow. The scope is synchronized to the spot.
INSTRUCTION01 / 10X / Y CODE+0000 · +0000Z DRIVE0.00 VIRTUAL
PHOSPHOR CRT · DIRECT DEFLECTION
SCANNINGBEAM PERSISTENCE
ENERGIZED VECTORVISIBLE FLYBACKBLANKED MOVE
THREE-CHANNEL SCOPE
X / Y / Z SIGNALS
10-BIT DAC · 0.0 msINSTRUCTION TRACE
| # | Instruction | X | Y | Z request |
|---|---|---|---|---|
| 10 | right-d | 0.36 | -0.28 | DRAW |
| 01 | left-move | -0.82 | -0.28 | BLANK |
| 02 | left-a | -0.36 | -0.28 | DRAW |
| 03 | left-b | -0.36 | 0.28 | DRAW |
| 04 | left-c | -0.82 | 0.28 | DRAW |
Current command: left-move. X/Y select position; Z controls brightness. A blank command still moves the deflection amplifiers.
FROM LIST TO LIGHT
- 01VECTOR MEMORYFetch endpoint, intensity, and blanking bit.
- 02X/Y DACQuantize coordinates into signed deflection codes.
- 03DEFLECTION AMPSDrive the beam toward the commanded endpoint.
- 04Z AMPLIFIEREnergize draw strokes; suppress flyback moves.
- 05PHOSPHORRetain light briefly, visually assembling a frame.