RGB21

The RGB-21 cable is identical in shape to a SCART one. The only way to tell them apart is by opening them and examining the pins used. It was used in Japan for high quality video signals.

Pinout

1. Left audio output
2. Left audio input
3. Audio output ground
4. Audio input ground
5. Right audio output
6. Right audio input
7. Sync input ground
8. Sync output ground
9. Sync input
10. Sync output
11. AV control signal
12. RGB video signal mask (Ym)
13. Red ground
14. Ym/Ys ground
15. Red
16. Video signal switch (+5v)
17. Green ground
18. Blue ground
19. Green
20. Blue
21. Ground

• Composite video signal is a standard video terminal (yellow) and the same. Are superimposed on the decoding sync signal, 0.7Vp-p, 75Ω matching.
• RGB signals (red, green, blue) are positive analog signals: 0.7Vp-p, 75Ω.
• Audio signal is 0.4V rms, input impedance is 47kΩ, output impedance is 10kΩ.

External Links

Wikipedia entry (Japanese)