Rank: Member
Groups: Member
Joined: 1/16/2012(UTC)
Posts: 8
Location: Norway
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Hello,
I´m having trouble getting lock when using the B3_SPDIF_4 card. I have tested using both with the 75 ohm and 10K ohm resistor without any luck. Also tested without any resistor.
I´m getting lock right away when I connect my coax directly into D1 on the buffelo card. I have checked the 20pin ribbon cable and it works as it should. I have checked every solder joint and connectivity along the paths and cant find anything wrong.
I can also see that the B3_SPDIF_4 card draws around 10mA when connecting It to the buffelo.
Any ideas what might be wrong?
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Rank: Member
Groups: Member
Joined: 1/16/2012(UTC)
Posts: 8
Location: Norway
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No ideas?
What does the IC on the B3_SPDIF_4 card board do ? Is there any simple way to check that its working as it should?
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Rank: Administration
Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN
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The IC is a 4 channel comparator.
You should see a TTL signal at each output when a single is present at the input.
My suggestion would be to try each channel on by one, and to check the supply voltage at the cap near the IC
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Rank: Member
Groups: Member
Joined: 1/16/2012(UTC)
Posts: 8
Location: Norway
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I found the problem. It was a noob mistake :) Overlooked to use jumpers on the RS1-4 when they where not needed.
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