Official USA Gamecube scart cable = Official PAL SNES scart?

[kel]

Some time ago I was looking into exactly that issue and found that the PAL 1-Chip SNES seems to use 37.5 Ohm resistors on its RGB lines (the nominal impedance is 75 Ohm), resulting in slightly too high signal levels if you connect them directly. The official RGB cable most likely has 37.5 Ohm resistors in series with the RGB signals which brings the signal levels down to the standard 0.7Vpp.

The official cable has 75 ohm resistors in parallel with the 75 ohm resistors of the display to match the 37.5 ohm impedance on the PAL 1CHIP SNES.

Although instead of 37.5 ohm, Nintendo seem to have just used 39 ohm resistors in the PAL 1CHIP. Not sure if the 1.5 ohm difference would matter or not, I mean how exact does impedance matching have to be?

[Unseen]

The official cable has 75 ohm resistors in parallel with the 75 ohm resistors of the display to match the 37.5 ohm impedance on the PAL 1CHIP SNES.

Yes, that's another option to fix the levels.

Although instead of 37.5 ohm, Nintendo seem to have just used 39 ohm resistors in the PAL 1CHIP. Not sure if the 1.5 ohm difference would matter or not, I mean how exact does impedance matching have to be?

For these relatively low-frequency signals such a small difference doesn't matter.