NTi Audio Digilyzer DL1 - Manual (Page 25)

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Following errors are analyzed/visualized in the error indicator box:
• Lock / unlock
• Validity bit
• Confidence bit (the received data eye pattern opening is less than
half of a bit period, indicating a poor link not meeting specs)
• Bi-phase mark coding error
• Parity error
• Carrier level below specification (for AES3 and S/PDIF input)
NOTE The lock/unlock state is the only available error in the
AdAT format.
ppM Meter
Many measurement functions include a PPM meter, displaying the
measured level peak in bargraph form. The scaling details are:
NOTE • For signal levels lower than -60 dBF the vertical line
marked above with -60 dBF remains displayed and
changes for muted signals to three dots.
• The number of full scale values causing clipping
indication can be set in the SETUP menu (PPM
OVER THRESH). By default it is set to three
samples.
Basic Operation
Fig 4-12, Bargraph markings
-10 dBF 0 dBF -3 dBF
Signal
clipping
indication
-60 dBF
Channel A
Channel B