How to adjust and calibrate BB PCM64 - diyAudio
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Old 9th February 2007, 10:50 AM   #1
diyAudio Member
Join Date: Apr 2003
Location: Milan
Default How to adjust and calibrate BB PCM64

data can be found in this link:

technical advice needed:
1.How to adjust and calibrate Bit1 to Bit4?
2.electronics equipments needed for this calibration?
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Old 9th February 2007, 01:01 PM   #2
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Join Date: Apr 2002
Location: Munich
This datasheet seems to be new.

You can adjust with CD 1 kHz -60dB.
Bit 1 is most important.
You can listen with headphones and adjust so that the sine sounds as clean and pure as possible.
In the datasheet it looks like always the corresponding bit switch must be closed for calibration.
When all bits are adjusted, close all bit switches.
I don't know if those switches are necessary, maybe it is easier to adjust.

Equipment would be a spectrum analyzer, stand alone or PC+soundcard+software.
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Old 10th February 2007, 12:14 AM   #3
Ruach is offline Ruach  Singapore
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Join Date: May 2003
Location: Singapore
Since the pcm64 is based on the dac729, you can also consult the datasheet of dac729 for reference.
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