S/PDIF connected to Aurora 8

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   Hello,

yesterday, I've tried to connect my CD-Player via S/PDIF directly to the AES/EBU input of the Aurora 8. After routing the signal to the analogue outs 1/2, the fader 1 on the first source tab of the analogue section in the Remote Software (via MIDI) is moved up automatically (also after moving them down manually). After disconnecting the CD-Player, the fader doesn't move anymore.

The adapter cable from AES/EBU to Chinch is self-made, 5 meters of cordial 75ohm cable with Chinch on the one side and XLR on the other (Hot from Chinch connected to Pin 2 of the XLR and Ground from Chinch connected to Pin 3 of the XLR). 

Where is the fault?

Greetings from Germany,

Daniel

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focusonsound Members Profile Send Private Message Find Members Posts Add to Buddy List Caracal Joined: July/29/2010 Posts: 8	Quote Reply Topic: S/PDIF connected to Aurora 8 Posted: July/29/2010 at 1:50am
	Hello, yesterday, I've tried to connect my CD-Player via S/PDIF directly to the AES/EBU input of the Aurora 8. After routing the signal to the analogue outs 1/2, the fader 1 on the first source tab of the analogue section in the Remote Software (via MIDI) is moved up automatically (also after moving them down manually). After disconnecting the CD-Player, the fader doesn't move anymore. The adapter cable from AES/EBU to Chinch is self-made, 5 meters of cordial 75ohm cable with Chinch on the one side and XLR on the other (Hot from Chinch connected to Pin 2 of the XLR and Ground from Chinch connected to Pin 3 of the XLR). Where is the fault? Greetings from Germany, Daniel

PaulTech Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group Joined: August/13/2004 Location: United States Posts: 3207	Quote Reply Posted: July/29/2010 at 3:15pm
	Daniel, Hmmm, That does not make much sense. If you look in the Aurora Remote Control > About Aurora page, how does it say that the Aurora is connected? I wonder if there are some random AES UB signals that are being interpreted as controls from an AES16 card. Is the attenuation audible? Do you have the XLR cold pin connected at all?
	Paul Erlandson Lynx Studio Technology Support 714-545-4700 x 206

focusonsound Members Profile Send Private Message Find Members Posts Add to Buddy List Caracal Joined: July/29/2010 Posts: 8	Quote Reply Posted: July/30/2010 at 12:49am
	Hey, I will look tonight what the Aurora says about the connection... The attenuation of channel 1 is audible, channel 2 is manually adjustable witout problems! Only channel 1 has this strange behaviour! The connectors are connected like this: XLR: Pin1 - nothing Pin2 - Hot from Chinch Pin3 - Ground from Chinch Chinch: Hot - Pin2 from XLR Ground - Pin3 from XLR Greetings, Daniel

PaulTech Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group Joined: August/13/2004 Location: United States Posts: 3207	Quote Reply Posted: July/30/2010 at 4:48pm
	Not sure if this is what you meant, but Pin2 (+) should eb connected to the phono plug, and Pin3 (-) should be connected to the sleeve.
	Paul Erlandson Lynx Studio Technology Support 714-545-4700 x 206

focusonsound Members Profile Send Private Message Find Members Posts Add to Buddy List Caracal Joined: July/29/2010 Posts: 8	Quote Reply Posted: August/25/2010 at 8:32am
	Hello, I've checked and changed the cable and now it works! Pin 2 was broken... But now I've got a new question. The CD-Player is connected digitally to the Aurora and it works very well. But what's the matter with the digital clock? The CD-Player is enforced to be the master, the Aurora too because it is the heart of the studio. Could this be a problem at any time? Does this influent the sound quality?

PaulTech Members Profile Send Private Message Find Members Posts Visit Members Homepage Add to Buddy List Admin Group Joined: August/13/2004 Location: United States Posts: 3207	Quote Reply Posted: August/25/2010 at 2:27pm
	Yes, this will be a problem. If the CD player cannot be a clock slave, its clock will be somewhat off from the Aurora clock, likely producing audible errors. You could slave the Aurora to the clock from its digital input when playing CDs, and Synchrolock will clean it up. This is probably your best workaround.
	Paul Erlandson Lynx Studio Technology Support 714-545-4700 x 206

focusonsound Members Profile Send Private Message Find Members Posts Add to Buddy List Caracal Joined: July/29/2010 Posts: 8	Quote Reply Posted: August/26/2010 at 12:53am
	OK, thank you for your answer.