USB module input not locking? Options  Watch this topic  Print this topic  Atom Feed  RSS Feed View » Normal Threaded

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MrMajestic		#1 Posted : Wednesday, September 16, 2009 6:48:23 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		I cannot get a lock from the USB module when input as SPDIF to the mux module. The Buffalo will lock to the SPDIF out straight from the USB, but not the mux. Any ideas on where I should look? The lock LED just flashes briefly and then turns off. When I run SPDIF from my soundcard I get a lock, so the mux module is ok. Edited by user Wednesday, September 16, 2009 6:52:38 AM(UTC)  | Reason: Not specified
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Brian Donegan		#2 Posted : Wednesday, September 16, 2009 6:51:51 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Have you tried another SPDIF source into the same input of the mux?
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MrMajestic		#3 Posted : Wednesday, September 16, 2009 6:53:20 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		Brian Donegan wrote: Have you tried another SPDIF source into the same input of the mux? Yeah, I just edited the post so indicate that. I have lock when I use SPDIF straight from my soundcard.
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Brian Donegan		#4 Posted : Wednesday, September 16, 2009 7:14:52 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		What voltage do you measure at the VBUS pad (referenced to the GND pad)? And what are your MUX switch settings?
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MrMajestic		#5 Posted : Wednesday, September 16, 2009 7:39:21 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		Brian Donegan wrote: What voltage do you measure at the VBUS pad (referenced to the GND pad)? And what are your MUX switch settings? I'm measuring 4.99 at the VBUS terminal. MUX settings are: 1 - 2 + 3 + 4 -
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Brian Donegan		#6 Posted : Wednesday, September 16, 2009 7:52:01 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Try: 1 - 2 - 3 + 4 - See if that works.
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MrMajestic		#7 Posted : Wednesday, September 16, 2009 7:57:34 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		Brian Donegan wrote: Try: 1 - 2 - 3 + 4 - See if that works. Made no difference I'm afraid.
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Brian Donegan		#8 Posted : Wednesday, September 16, 2009 8:05:07 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Ok, try using the AES input (#4), supplying the + and - pins.
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MrMajestic		#9 Posted : Wednesday, September 16, 2009 9:24:27 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		Brian Donegan wrote: Ok, try using the AES input (#4), supplying the + and - pins. Same thing, no lock with USB, but perfect lock with coax from soundcard.
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MrMajestic		#10 Posted : Saturday, September 19, 2009 7:36:23 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		I tried with a different USB module, same thing. Also tried a different MUX, same thing. I'm out of ideas here.
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Brian Donegan		#11 Posted : Saturday, September 19, 2009 9:27:57 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		I am puzzled as well. You may need to shield it from cosmic rays... perhaps a tinfoil hat will do it?
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MrMajestic		#12 Posted : Saturday, September 19, 2009 10:21:40 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		Brian Donegan wrote: I am puzzled as well. You may need to shield it from cosmic rays... perhaps a tinfoil hat will do it? I have two sets of USB receiver/SPID mux combos that do not talk to each other. I don't have that much tinfoil.
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MrMajestic		#13 Posted : Sunday, September 20, 2009 2:58:55 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		I think it might be working now. I switched around the units and now I'm running a v1.0 mux. The other one was a newer 1.01 mux.
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MrMajestic		#14 Posted : Monday, September 28, 2009 1:52:52 AM(UTC)
Rank: Member Groups: Member Joined: 5/21/2007(UTC) Posts: 150 Location: Sweden Was thanked: 2 time(s) in 2 post(s)		I still have a problem with one of my muxes. It does not respond on input 2 and I cant seem to figure out why. Any ideas on where I should look? Same control and input wiring as well as power works on a different mux.
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Brian Donegan		#15 Posted : Monday, September 28, 2009 6:36:04 AM(UTC)
Rank: Administration Groups: Administration, Customer Joined: 10/24/2006(UTC) Posts: 2,868 Location: Massachusetts, USA Thanks: 2 times Was thanked: 141 time(s) in 134 post(s)		Can you take a close-up picture of it? It may be a missing part or bad part value. I assume you checked the terminal block solder joints...
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