Build Thread for TPA BIII + Ian Async I2S FIFO + OPC NTD1 + Salas SSLV - Page 46 - diyAudio
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Old 24th January 2013, 12:10 AM   #451
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Quote:
Originally Posted by bigpandahk View Post
Ian

All three signals, thanks.
Waveform looks perfect. Please measure them on the three diodes at the fifo board to see if signals keep same. Other wise, check up you I2S cable.

Ian
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Old 24th January 2013, 12:19 AM   #452
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Is there a mini 75ohm cable/connector you can recommend to take from the to BIII SE SPDIF input to the OTTO & then on to the BNC connector that will be on the rear panel? Or should I just stick with the 50ohm

thanks for the video link

What sort of temperature are you using on the solder iron?
I personally just use a piece of regular wire, or a twisted pair from CAT5.

I use Kester 63/37 solder with NoClean flux, 0.15" diameter. (Kester# 24-6337-8806). I generally solder at about 650F. A clean tinned tip is everything.
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Old 24th January 2013, 01:55 PM   #453
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If you want to use the u.fl connectors, you pretty much have to use 50-ohm u.fl cables, but this should not present any issues with such short distances.
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Old 24th January 2013, 01:59 PM   #454
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I use Kester 63/37 solder with NoClean flux, 0.15" diameter.
This should be 0.015" diameter. I use this solder for all hand soldering I do.
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Old 24th January 2013, 09:01 PM   #455
DQ828 is offline DQ828  Australia
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This should be 0.015" diameter. I use this solder for all hand soldering I do.
Thanks
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Old 26th January 2013, 07:31 AM   #456
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Originally Posted by iancanada View Post
Waveform looks perfect. Please measure them on the three diodes at the fifo board to see if signals keep same. Other wise, check up you I2S cable.

Ian
Ian

It should not be the I2S cables as the USB through backdoor works perfect. I bypass the FIFO and connect the SPDIF directly to the BIII, it works with either USB or Optical. It seems that the FIFO does not recognize the signal from optical. Strange!!
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Old 29th January 2013, 02:31 PM   #457
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Ian

I believe the problem is caused by the dual clock board. It doesn't switch the sf to match the source. It always state at 96!!

Anyway, I will have the i570 to replace it.
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Old 29th January 2013, 09:42 PM   #458
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Quote:
Originally Posted by bigpandahk View Post
Ian

I believe the problem is caused by the dual clock board. It doesn't switch the sf to match the source. It always state at 96!!

Anyway, I will have the i570 to replace it.
bigpandahk,

I suspect your isolator board, if there is anything wrong with the control signals, you will lost the Fs auto switching function.

Try removing it, run dual xo from FIFO directly. If it's working then the isolator board is the criminal.

Ian
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Old 30th January 2013, 10:04 PM   #459
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Thanks Ian

The criminal is the FPC cable from isolator to clock board.
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Old 31st January 2013, 03:05 AM   #460
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Quote:
Originally Posted by bigpandahk View Post
Thanks Ian

The criminal is the FPC cable from isolator to clock board.
You won.
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