av:5200_s-video_mod
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— | av:5200_s-video_mod [2019/08/27 20:45] (current) – created - external edit 127.0.0.1 | ||
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+ | ==== Atari 5200 S-video and Audio Mod ==== | ||
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+ | This page is made up from the schematic on the 5200 FAQ with new pictures and explenations. | ||
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+ | == Luma Decoder Circuit == | ||
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+ | The first stage of the Luma circuit decodes the digital luminance signal and mixes in the sync. | ||
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+ | {{av: | ||
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+ | == Luma Impedance Matching == | ||
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+ | The decoded luma is then passed though a [[http:// | ||
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+ | {{av: | ||
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+ | The chroma and audio outputs are strong enough not to need any amplification. | ||
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+ | {{av: | ||
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+ | == Parts == | ||
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+ | * 100uF Capacitor | ||
+ | * 10uF Capacitor | ||
+ | * 1uF Capacitors (2) | ||
+ | * 10 ohm | ||
+ | * 75 ohm (2) | ||
+ | * 750 ohm | ||
+ | * 1.6 kohm | ||
+ | * 2 kohm | ||
+ | * 4.7 kohm | ||
+ | * 9.1 kohm | ||
+ | * 18 kohm | ||
+ | * 36 kohm | ||
+ | * 1N4148 low power silicon diode (CR1) | ||
+ | * 2N3904 or equivalent transistor | ||
+ | * S-Video Jack | ||
+ | * RCA Jack | ||
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+ | == Where to get signals == | ||
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+ | The Below is quoted directly from the 5200 FAQ | ||
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+ | FIXME Perhaps someone with a 5200 can take some board pics? | ||
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+ | Most of the components do not have visible labels on the board' | ||
+ | silkscreen, so giving component numbers is not useful. | ||
+ | upper right corner of the area of the board that's covered by the | ||
+ | shielding, there is a horizontal row of components. | ||
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+ | ^ ^ ^ ^ ^ ^ | ||
+ | | | | | | `-Chroma | ||
+ | | | | | `----Luma 1 | ||
+ | | | | `-------Sync | ||
+ | | | `----------Luma 0 | ||
+ | | `-------------Luma 2 | ||
+ | `----------------Luma 3 | ||
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+ | There is a row of components to the right of the GTIA (C014805) | ||
+ | and below a cluster of inductors and transistors. | ||
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+ | o o o o o o o o o o o | ||
+ | | | | | | | | | | | | | ||
+ | R40 R R R R R C R R C C | ||
+ | | | | | | | | | | | | | ||
+ | o o o o o o o o o o o | ||
+ | ^ | ||
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