Chapter 5 Operation
5300.9677.71 - 5.46 - EN-4
Note The states OK and Too Low are determined using the algorithm described in the section
"Signal Monitoring at Analog Inputs".
Status of the AES receiver
In addition, certain status information for the AES receiver is displayed.
Display Explanation
Nominal Status display for the set nominal input amplitude
Current Display of the peak value for the input amplitude during the last second;
shown as a percentage of the nominal input amplitude
Status Indicates the current status as follows:
– OFF
The input is not active.
– OK
The input is active and the input amplitude is OK
– Clipped
The input is active and the input amplitude is too high; the A/D con-
verter is overdriven
– Too Low
The input is active but the input amplitude is below the monitoring
threshold
Display Explanation
Sample Rate Indicates the detected sample rate for the audio signal; the receiver can
decode signals with sample rates between 32 kHz and 192 kHz per
channel
Preemphasis Indicates whether the receiver has detected a preemphasis in the AES
data stream. This information is obtained from the status bits in the AES
channel.
Audio Indicates whether the receiver has detected audio content in the AES
data stream. This information is obtained from the AES channel status
bits.
Non-PCM Indicates whether the data stream contains correct audio samples. Non-
PCM audio streams in accordance with the Dolby specification AC-3
Data Stream in IEC 60958 cannot be processed by the system.
The following states are possible:
– Off
The input is not active.
– Audio
The input is active and the signal conforms to AES3, IEC 60958.
– Non-PCM Audio
The input is active and the signal cannot be processed.
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