From ccdf7c8ff8df768587493906bb24e5026518eebe Mon Sep 17 00:00:00 2001 From: Daniel Stenberg Date: Wed, 4 Jun 2003 20:36:47 +0000 Subject: Andreas Stemmer's entry 74 on digital I/O added git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3728 a1c6a512-1295-4272-9138-f99709370657 --- docs/FAQ | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) (limited to 'docs') diff --git a/docs/FAQ b/docs/FAQ index 90333664a9..9e24d44abb 100644 --- a/docs/FAQ +++ b/docs/FAQ @@ -676,3 +676,46 @@ A73: Yes, the recorder can crash when you copy several gigabytes of * Use USB 2.0. Transfers will be much faster. * Copy incrementally. With fully charged standard batteries it should be capable of sustained copying for 2 - 2.5 hours. + +Q74: There's a digital I/O connector on my jukebox. What is it good for? +A74: The Recorder models have a connector for digital audio output using the + common S/PDIF standard (Sony/Phillips Digital Interface). This jack is + not present on the Studio/Player/FM Recorder models. By using the digital + output in combination with high class external equipment, you can get + much better sound quality out of your jukebox, because you can use better + DA-converters and better amplifiers. + + The Recorder and the FM Recorder models are able to record from digital + sources, too. The digital inputs don't have the 15kHz lowpass filter like + the analog inputs and you are sure to minimize the noise floor. + Generally, S/PDIF can be an electrical or an optical signal and there are + many devices that support both. There are even small 3.5mm sockets that + can take either an optical or an electrical cable. But the socket on the + jukebox is for electrical signals only! + + If you want to connect your amp with digital input (RCA type) to the + output of your Recorder you need an adapter cable (3.5mm stereo jack to + dual RCA jack). Plug the 3.5mm stero jack into the digital I/O socket of + your jukebox and the red RCA jack (right channel) into the digital input + socket of your amp and that's it. You don't have to enable the digital + output. The sound settings on the digital output are always flat, your + volume, bass, treble, bass boost, loudness settings won't have any effect + here. + + For recording digital signals on the Recorder, use the white RCA jack + (left channel) and plug it into the digital output of your CD player, MD + player or whatever. Don't forget to select digital input in the recording + settings. Note that there exist some adapter cables with different color + coding, so if output doesn't work the red jack try the white RCA jack, + too. The tip of the 3.5mm jack is the digital input, the ring is the + ouput. + + For recording digital signals on the FM Recorder, you need a special + 4-pole 3.5mm plug (shaft = ground, tip = left channel analog line in, + first ring (next to tip) = right channel analog line in, second ring = + digital in). + + If you want to connect devices with optical inputs/outputs, you need a + small converter box which converts your signal from electrical to optical + (for digital output) respectively optical to electrical (for digital + recording). -- cgit v1.2.3