Lynx AES16 - Page 48

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Lynx Mixer Reference

Error (red) Indicates a transmission error in the channel status data

This indicator represents the state of Channel Status Cyclic Redundant Check used to validate the

transmission of the channel status data embedded in the AES stream. An error indicates a channel status

data error was caused either by the transmitting device or the connecting cables. Some devices do not

transmit CS CRC. In this case an error will be displayed, but the audio data can still be transmitted without

errors.

Type

This indicator represents the type of data stream being transmitted by the external device. The external

device indicates type using specific bits in the channel status data. Typically PCM types are shown with

green background and non-PCM types, such as Dolby AC3, have a yellow background.

Valid linear PCM types (bit width):

PCM PCM16 PCM18

PCM19 PCM20 PCM22

PCM23 PCM24

Valid compressed, non-PCM types:

Dolby AC-3

MPEG1L1 MPEG1L2 MPEG2

MPEG2AAC MPEG2L1 MPEG2L2

MPEG2L3 MPEG-4

DTS I DTS II DTS III

ATRAC ATRAC2/3

Emphasis

Off (gray) Emphasis is off

50/15us (green) 50/15us pre-emphasis

J17 (green) CCITTJ.17 emphasis

Unknown (green) Emphasis not indicated

The emphasis bit is part of the channel status data and is used by a transmitter to indicate if the audio data

being transmitted has been encoded with audio signal emphasis.

Rate

This indicator represents sample rate encoded in the channel status data.

Valid Rates include the following:

32.0; 44.1; 48.0; 88.2; 96.0; 176.4; 192.0 kHz (all in green) or Unknown (red)

Note: it is the responsibility of the transmitting device to send rate status that matches the actual rate of the

audio data stream being sent. However, it is possible for a rate discrepancy to exist during a valid

transmission.

Clock Rate

Clock Rate displays a real-time measurement of the sample rates of the incoming signals. These

measurements are very useful for evaluating and validating digital inputs when synchronization or clocking

issues are encountered.

AES16 User Manual 48