NTi Audio Digilyzer DL1 - Manual (Page 24)

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