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authorDaniel Stenberg <>2003-06-04 20:36:47 +0000
committerDaniel Stenberg <>2003-06-04 20:36:47 +0000
commitccdf7c8ff8df768587493906bb24e5026518eebe (patch)
tree2a6e369904cac77719a0d9d4dace8becb6f22cbe /docs
parent8498a48496579aecc1645604f49d931d4f35ff7f (diff)
Andreas Stemmer's entry 74 on digital I/O added
git-svn-id: svn:// a1c6a512-1295-4272-9138-f99709370657
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@@ -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).