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DISCUSSION The AV card is an Apple expansion card that plugs into the PDS connector of any Power Macintosh computer. It contains an I/O system that handles video input and output signals, mixes video with 16-bit graphics, and supports a wide variety of Apple and third-party monitors. The AV I/O system also lets the user connect a television set as a monitor, using either NTSC or PAL format. The AV card contains a DB-15 monitor connector output. Here is a diagram of the pin configuration for the DB-15 monitor connector and the signals: 8 7 6 5 4 3 2 1 15 14 13 12 11 10 9 Pin Description Pin Description --- ----------- --- ----------- 1 Red ground 9 Blue video signal 2 Red video signal 10 Monitor sense 2 3 Composite synchronization 11 Synchronization ground 4 Monitor sense 0 12 Vertical synchronization 5 Green video signal 13 Blue ground 6 Green ground 14 Horizontal synchronization 7 Monitor sense 1 15 Horizontal synchronization ground 8 No connection The AV card also contains two identical connectors for S-Video input and output, with adapter cables for composite video devices that have RCA connectors, like television equipment. Here is a diagram of the pin configuration for the S-Video port and the signals: 4 7 3 2 6 5 1 Pin Input connector Output connector --- --------------- ---------------- 1 AGND AGND 2 AGND AGND 3 Video Y (luminance) Video Y (luminance) 4 Video C (chroma) Video C (chroma) 5 I^2C clock (I-squared)* Composite video 6 +12 V at 250 mA maximum** No connection 7 I^2C data* No connection * Philips serial bus ** Fused at 1.1 A Article Change History: 06 Jul 1994 - Added diagram of pin configuration for S-Video and DB-15 ports. 24 Mar 1994 - Corrected wording. Support Information Services |
| Document Information | |
| Product Area: | Computers |
| Category: | Power Macintosh |
| Sub Category: | General Topics |
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