Reference DAC Module - Discrete R-2R Sign Magnitude 24 bit 384 Khz - Page 126 - diyAudio
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Old 4th February 2015, 10:53 AM   #1251
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Quote:
Originally Posted by spzzzzkt View Post
It might help if you connect a GND at the power connector.

ADD:
It looks like you have not read the power supply requirements and have hooked up a +10VDC to one side and GND to the other.
You must have + and - DC supply and GND connected to middle pins of the power connector for the board to work.

My fault diagnosis : User Error.
+ and - DC are connected but not ground. Will give it a try. Thx!
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Old 4th February 2015, 11:41 AM   #1252
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Originally Posted by chrisnew View Post
+ and - DC are connected but not ground. Will give it a try. Thx!
Added the ground lines and I hv blinking lights now. Now to get a lock on the toslink input
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Old 4th February 2015, 11:54 AM   #1253
soekris is offline soekris  Denmark
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Quote:
Originally Posted by chrisnew View Post

Min connected, rs232, toslink and rca out.

Thing is I started out with the power led and input power, and it already doing the blink once.

Just doubled check and nothing short any where.

Appreciate your kind advise
1) As already said, power is incorrect connected and it can't work without correct power, both + and - referred to GND.
2) You can't connect a LED directly, you need a current limiting resistor in series.
3) And you can't connect the RCA plugs like that, you have to connect them between OUT+ and GND.
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Old 4th February 2015, 01:08 PM   #1254
Stixx is offline Stixx  Germany
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Was just going to say that... RCA's are connected to + and +!
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Old 4th February 2015, 02:41 PM   #1255
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Excuse the fact that this is not a solely SOEKRIS question - but back to uFL connectors - having never used these I was taken by surprise when it was mentioned one needed a tool to separate them. So I looked into getting the tool and then I see a tool for inserting the connector!

From someone familiar with these please let me know if there is a special technique to getting them connected. Does one need a tool?

I will be greatly appreciative!
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Old 4th February 2015, 02:50 PM   #1256
RollE2k is offline RollE2k  Sweden
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I say, you only need one to remove them, not to connect them.
You can even remove the connectors without the tool - but there is bigger risk to damage the connectors.
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Old 4th February 2015, 03:42 PM   #1257
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Quote:
Originally Posted by rickmcinnis View Post
Excuse the fact that this is not a solely SOEKRIS question - but back to uFL connectors - having never used these I was taken by surprise when it was mentioned one needed a tool to separate them. So I looked into getting the tool and then I see a tool for inserting the connector!

From someone familiar with these please let me know if there is a special technique to getting them connected. Does one need a tool?

I will be greatly appreciative!
For insertion, you just need to make sure it is PERFECTLY flat, and square to the mating connector. If it's a off, it will still mate, but you can damage the connector that way.
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Old 4th February 2015, 03:44 PM   #1258
TNT is offline TNT  Sweden
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P 6 and fwd:

http://media.digikey.com/pdf/Data%20...L%20Series.pdf
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Old 4th February 2015, 04:47 PM   #1259
zfe is offline zfe
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Quote:
Originally Posted by soekris View Post
...
Input Select is:__INP SLCT0___INP SLCT1

Auto_____________N-C_______N-C
I2S______________GND______GND
SPDIF1 (Coax)_____N-C_______GND_____(Sensitive LVDS receiver)
SPDIF2 (Toslink)___GND_______N-C______(Standard 3.3V digital level)
There is an error either in the above table or in the dam1021_mech_con.pdf. The roles of INP SLCT0 and NP SLCT1 are swaped.
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Old 4th February 2015, 05:10 PM   #1260
Eldam is offline Eldam  France
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Chrisnew : the output for the RCAs is the 4 vias in the middle between the balanced output ! You connected the Single Ended on the Balanced output ! Look at the shematic : link in first page of this thread !

Can you photograph the Powersupply please ? And give the unloaded voltage at the output of your PS ?
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