Digilyzer DL1 User Manual
Digilyzer DL1 User Manual
Digilyzer DL1 User Manual
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Consistency Check<br />
The consistency check is constantly running as a background task. It<br />
compares the carrier information with the status information. E.g. the<br />
sampling frequency claims to be 44.1 kHz but in reality is 48.0 kHz.<br />
Such errors are immediately displayed via a flashing square around<br />
the individual status information.<br />
Measured<br />
sampling<br />
frequency<br />
Wrong sample<br />
frequ. status<br />
information<br />
Measurement Functions<br />
Fig 5-06, Channel status consistency check<br />
The consistency check is carried out with the following parameters:<br />
• Sample frequency<br />
• Word length<br />
• Clock accuracy<br />
• 1C2f usage<br />
Application hints:<br />
• Wrong signalization of the sample frequency of digital audio<br />
devices may cause real trouble.<br />
• Some units expected to be e.g. 24 bit devices, signalize 24<br />
bit in the channel status but only send 22 relevant bits. The<br />
consistency check helps to see this problems quick and<br />
easy.<br />
Channel Status Details<br />
Detailed information about the interpretation of each individual bit and<br />
bytes may be found in the normative documents IEC 60958-3 and<br />
AES3. A summary is given in the appendix.<br />
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