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Chapter 5---Electronics
!Convergence output amplifiers for all colors and both horizontal and vertical axes
!Convergence enable and raster fill function
!ILA® assembly driver circuitry with temperature compensation
!Phase locked loop for ILA® assembly drivers
!IIC serial bus interface
Convergence Deflection PCB - Inputs
X_RGB_CONV -
Y_RGB_CONV -
CORR_SYNC - square wave from the System Controller PCB, logic level synchronization signal for the horizontal axis.
V_DRIVE - square wave from the Raster Timing Generator PCB, logic level synchronized to vertical sync with four horizontal line duty cycle.
WIDTH_CONTROL - a DC waveform from the Horizontal Vertical Deflection PCB that controls the image width.
IIC_CLK - IIC clock line.
IIC_DATA - IIC data line.
IIC_SINT - IIC interrupt line.
±15 V - input power from the Low Voltage Power Supply for the analog circuitry.
+5.1 V- input power from the Low Voltage Power Supply for the digital circuitry.
Convergence Deflection PCB - Outputs
RGB_ILA® (pos) - positive outputs to the ILA® for the red, green, and blue ILA® driver circuitry (about ±12 Vpp).
RGB_ILA® (neg) - negative outputs to the ILA® for the red, green, and blue ILA® driver circuitry (about ±12 Vpp).
H_PARABOLA - horizontal parabola for dynamic focus section of the High Voltage Power Supply.
V_PARABOLA - vertical parabola for dynamic focus section of the High Voltage Power Supply.
V_RAMP - vertical ramp waveform to the Horizontal Vertical Deflection PCB (about 4 Vpp).
V_PARABOLA - vertical parabola waveform to the Horizontal Vertical Deflection PCB (about 4 Vpp).
Model 250 Service Manual |