Digilyzer DL1 User Manual
Digilyzer DL1 User Manual
Digilyzer DL1 User Manual
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Carrier Information<br />
Carrier<br />
level<br />
Carrier frequency displays the measured frequency in<br />
• Hz<br />
• ppm, deviation to the next standard frequency<br />
Carrier level indicates the measured carrier level in Vpp. Levels higher<br />
than 5.0 Vpp are indicated as >5 Vpp.<br />
Application hint:<br />
Basic Operation<br />
Fig 4-11, Carrier information<br />
Error indicator box: The <strong>Digilyzer</strong> checks the digital signal, its<br />
protocol and recognizes a number of errors. These errors can cause<br />
many audible effects, which should ideally never occur. An error is<br />
immediately indicated by the <strong>Digilyzer</strong> by filling the error indicator<br />
box black. Afterwards the box empties within ten seconds.<br />
24<br />
Carrier frequency<br />
Error indicator box<br />
The carrier level is a robust first approximation of signal quality.<br />
With decent short interconnection cables the carrier level<br />
• of an AES3 signal is in the range of 2 to 7 Vpp<br />
• of a S/PDIF signal is in the range of 200 to 700 mVpp<br />
With impedance problems involved or with long cables the<br />
AES3 signal level may drop to levels below these values, so<br />
the reliability gets worse.
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