Chapter 2---System Description
Raster Timing Generator Board
INPUTS | DESCRIPTION |
BLANKING
Blanking signal. logic F type
CRTs
OUTPUTS | DESCRIPTION |
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RED_FOCUS | Focus supply of CRTs. about 7 KV. |
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GRN_FOCUS |
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BLU_FOCUS |
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RED_GRID1G | Grid 1 (G1) signal of CRTs. |
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RN_GRID1BL |
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U_GRID1 |
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RED_HEAT+ | Positive side of the heater voltage for CRTs. About 6.2 V. |
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GRN_HEAT+ |
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BLU_HEAT+ |
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RED_HEAT- | Negative side (return line) of the heater voltage for CRTs. Ground |
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GRN_HEAT- | level. |
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BLU_HEAT- |
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RED_ | Video output signals of the VAB. about 40 VPP with peak voltage of |
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CATHODE | about 70 V. |
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GRN_ |
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CATHODE |
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BLU_ |
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CATHODE |
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RED_GRID2 | G2 (screen) supply of CRTs. about 600 to 800 V |
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GRN_GRID2 |
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BLU_GRID2 |
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| OUTPUTS | DESCRIPTION |
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| ARC_GRD | Ground of CRTs ( anode supply return line). |
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| System Power Supply |
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| INPUTS | DESCRIPTION |
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| +6.2 V | +6.2 V supply line (heater voltage). |
| +15 V | +15 V supply for use by Video Amplifier Board. |
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| +80 V | +80 V supply for use by Video Amplifier Board. |
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Interlocks and protection:
None
Model 200 Service Manual |
