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| Chapter |
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| I | RED_G2 | Red G2 Control | |
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| I | GRN_G2 | Green G2 Control | |
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| I | BLU_G2 | Blue G2 Control | |
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| I | WHT_BOOST | Gamma correction | |
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| I | BLK_BOOST | Gamma correction | |
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| I | G1_BIAS | G1 bias level | |
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| O | /VA_OK | Issues to SCB that Video Amplifier | |
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| is OK |
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| O | BEAM_CURRENT | Beam current control | |
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| O | OK_DETECT | Issues to SCB that VPB is OK | |
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| Video Processor I/O |
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| This section provides a comprehensive description of the inputs to | |
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| and outputs from the VPB. The I/O descriptions in Table | |
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| arranged by the source/destination of the signal. The format used | |
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| is such that the assembly communicated with is used as the | |
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| primary heading of each group of signals. Those signals are | |
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| further subdivided into inputs and outputs. Inputs refers to an input | |
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| to the VPB, while output refers to an output from the VPB. | |
| Table |
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| System Controller Board |
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| INPUT |
| DESCRIPTION |
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| RED_OVER |
| Red signal of | |
| GRN_OVER |
| Similar to RED_OVER |
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| BLU_OVER |
| Similar to RED_OVER |
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| OVERLAY |
| Overlay control signal |
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| RED_SENS |
| Sensitivity correction information for red. Real time data at | |
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| 0 volt to 1 volt. |
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| GRN_SENS |
| Similar to RED_SENS |
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| BLU_SENS |
| Similar to RED_SENS |
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| RED_THRES |
| Threshold correction information for red. Real time data at | |
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| 0 Volt to 1 Volt |
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Model 200 Service Manual |
