Chapter 2---System Description
| H_LOCK+ | Horizontal interlock for yoke connectors. This should be about 5 V |
|
|
| when closed or 15 V when open. |
|
| H_RED+ | Output of horiz. red centering (also top of the red horiz. yoke). About |
|
|
| + 5 VDC. |
|
| H_GRN+ | Output of horz. green centering (top of green horz. yoke). About + 5 |
|
|
| VDC |
|
| H_BLU+ | Output of horiz. blue centering (top of blue horiz. yoke). About + 5 |
|
| VDC. |
| |
|
|
| |
| V_RED+ | Output of red vertical amplifier. About 40 VPP. |
|
|
|
|
|
| V_GRN+ | Output of green vertical amplifier. About 40 VPP. |
|
|
|
|
|
| V_BLU+ | Output of blue vertical amplifier. About 40 VPP. |
|
|
|
|
|
| +15 V | +15 V supply for use by Scan Reversal Board |
|
|
|
|
|
|
| ||
|
|
|
|
| +5 V | +5 V supply for use by Scan Reversal Board |
|
|
|
|
|
| Convergence/Deflection Board |
|
|
INPUTS | DESCRIPTION |
|
|
V_RAMP | Vertical ramp waveform. About 4 VPP. |
V_PARAB | Vertical parabola waveform. About 4 VPP. |
|
|
|
|
OUTPUTS | DESCRIPTION |
|
|
WIDTH_CTRL | A DC waveform for controlling width of picture. About 4 V max. |
|
|
| Raster Timing Generator (RTG board) |
|
|
INPUTS | DESCRIPTION |
|
|
/H_ENABLE | A low on this line enables horizontal deflection. A high disables the |
| horizontal amplifier. |
H_BAND:0 | Horizontal frequency band line. 000 = band A, 001 = band B, 011 = |
H_BAND:1 | band C and 111 = band D. |
H_BAND:2 |
|
|
|
HF_2V | Horizontal frequency to voltage converter. a DC signal proportional |
| to horiz. frequency. About 4.2 V at 90 kHz. |
H_DRIVE | Horiz. drive pulse, 50 % duty cycle HCT level signal |
|
|
|
| System Power Supply |
|
|
|
|
|
| INPUTS | DESCRIPTION |
|
| +5 V | + 5 V supply for use by HVD and Scan Reversal Boards |
|
| +15 V | + 15 V supply for use by HVD and Scan Reversal Boards |
|
| - 15 V supply for use by HVD and Scan Reversal Board |
|
Model 200 Service Manual |
