Chapter 2---System Description
| Video Processor Board |
|
|
INPUTS | DESCRIPTION |
|
|
V_SYNC | Input vertical sync |
H_SYNC | Input horizontal or composite sync |
|
|
G_SYNC | Sync on green signal which is stripped for the green video |
|
|
GRN_INPUT | Buffered version of green video |
|
|
|
|
OUTPUTS | DESCRIPTION |
|
|
Clamp | A negative going video clamp signal with about 3 % duty cycle |
Blanking | Blanking signal composed of right, left, top and bottom blanking |
|
|
|
| Horizontal/Vertical Deflection Board |
|
|
|
|
|
| INPUTS | DESCRIPTION |
|
|
|
|
|
| /H_ | Not used by the RTG board |
|
| FLYBACK |
|
|
|
|
|
|
| OUTPUTS | DESCRIPTION |
|
|
|
|
|
| H_BAND0 | Horizontal frequency band lines |
|
| H_BAND1 | Band A = 000, Band B = 001, Band C = 011 and band D = 111 |
|
| H_BAND2 |
|
|
| /H_ENABLE | Low = enabled deflection and high = disabled deflection |
|
|
|
|
|
| H_F2V | A DC voltage proportional to horizontal frequency |
|
|
|
|
|
| H_DRIVE | Square wave 50 % duty cycle synchronized to the selected |
|
|
| horizontal sync. |
|
|
|
|
|
|
| High Voltage Power Supply |
|
|
|
|
|
| OUTPUT | DESCRIPTION |
|
|
|
|
|
| HVPS_ | Synchronization pulse for HVPS, synchronized with the selected |
|
| SYNC | horiz. sync at either same, half or one third the frequency |
|
|
|
|
|
|
| ConvergenceDeflection Board |
|
|
|
|
|
| OUTPUT | DESCRIPTION |
|
|
|
|
|
| V_DRIVE | Square wave negative going pulse synchronized to the selected |
|
|
| vertical sync with pulse width of about 4 horizontal periods |
|
|
|
|
|
Model 200 Service Manual |
