Dir1701 Muting when switch on/off light

azyx · 9th April 2004, 08:23 PM

Dir1701 Muting when switch on/off light and other electrical gear. I take spdif signal from sblive.

JaroMi · 10th April 2004, 10:16 PM

it's bad design PLL's filter. I've got the same problems. Just read Crystal's design documents about suggested board layout, use best caps... traces short as possible...
Good luck

ojg · 11th April 2004, 03:00 AM

Same thing is was happening on one of my prototypes. I believe it is related to EMI or interference on ground loops. If you post your schematic/layout we might be able to help some more.

JaroMi · 11th April 2004, 10:28 PM

Crystal's AN159 document p.2nd-- recommended board layout... RC soldered almost "on pin" (0605)... PLL's ground and Vcc via R-C, reciever trafo+RS485... Now it's okay

Or maybe reference layout SLEU010A from Texas?
The same problems I was with PCM2702/2906...

azyx · 13th April 2004, 11:59 AM

Thank you guys! I try to solve the problem now.

9th April 2004, 08:23 PM	#1
azyx diyAudio Member Join Date: Mar 2004 Location: Thessaloniki	Dir1701 Muting when switch on/off light Dir1701 Muting when switch on/off light and other electrical gear. I take spdif signal from sblive.

10th April 2004, 10:16 PM	#2
JaroMi diyAudio Member Join Date: Jul 2003 Location: Poland/Gliwice	it's bad design PLL's filter. I've got the same problems. Just read Crystal's design documents about suggested board layout, use best caps... traces short as possible... Good luck __________________ Digital is all

11th April 2004, 10:28 PM	#4
JaroMi diyAudio Member Join Date: Jul 2003 Location: Poland/Gliwice	Crystal's AN159 document p.2nd-- recommended board layout... RC soldered almost "on pin" (0605)... PLL's ground and Vcc via R-C, reciever trafo+RS485... Now it's okay Or maybe reference layout SLEU010A from Texas? The same problems I was with PCM2702/2906... __________________ Digital is all

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11th April 2004, 03:00 AM	#3
ojg diyAudio Member Join Date: May 2003 Location: Norway	Same thing is was happening on one of my prototypes. I believe it is related to EMI or interference on ground loops. If you post your schematic/layout we might be able to help some more.

13th April 2004, 11:59 AM	#5
azyx diyAudio Member Join Date: Mar 2004 Location: Thessaloniki	Thank you guys! I try to solve the problem now.

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