How to adjust and calibrate BB PCM64

Mikewong · 9th February 2007, 10:50 AM

data can be found in this link:
http://www.datasheetarchive.com/search.php?q=PCM64

technical advice needed:
1.How to adjust and calibrate Bit1 to Bit4?
2.electronics equipments needed for this calibration?

Bernhard · 9th February 2007, 01:01 PM

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.

Ruach · 10th February 2007, 12:14 AM

Since the pcm64 is based on the dac729, you can also consult the datasheet of dac729 for reference.

http://www.ortodoxism.ro/datasheets/...wn/mXxsxzq.pdf

9th February 2007, 10:50 AM	#1
Mikewong diyAudio Member Join Date: Apr 2003 Location: Milan	How to adjust and calibrate BB PCM64 data can be found in this link: http://www.datasheetarchive.com/search.php?q=PCM64 technical advice needed: 1.How to adjust and calibrate Bit1 to Bit4? 2.electronics equipments needed for this calibration?

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9th February 2007, 01:01 PM	#2
Bernhard diyAudio Member 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.

10th February 2007, 12:14 AM	#3
Ruach diyAudio Member Join Date: May 2003 Location: Singapore	Since the pcm64 is based on the dac729, you can also consult the datasheet of dac729 for reference. http://www.ortodoxism.ro/datasheets/...wn/mXxsxzq.pdf

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