Operation Manual

Page 45
4.6.1 Digital In Channel Status
This section displays status information pertaining to the Hilo’s
digital inputs. The data displayed indicates the quality of the
AES/EBU connections as well as channels status data sent by a
transmitting device. The information displayed in this section is
very useful for troubleshooting digital input connection issues.
For more information about AES/EBU channel status data, refer
to the AES-3 specification available from the Audio Engineering
Society web site at http://www.aes.org
Lock
• Locked (green) Indicates the digital receiver is locked to a valid digital signal.
• Unlocked (gray) Indicates the digital receiver is not locked to a valid digital signal.
Validity
• Valid (green) Indicates the Valid channel status bit is set
• Invalid (red) Indicates the Valid channel status bit is not set
Emphasis
• Off (gray) Emphasis is off
• 50/15us (green) 50/15us pre-emphasis
• J17 (green) CCITTJ.17 emphasis
• Unknown (green) Emphasis not indicated
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.
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.
4.6.2 Digital Out Channel Status Button
Several selections can be made from this page, as well as showing
the current status of the Digital Outputs.
This section provides control of status bits embedded in the
AES/EBU stream for each digital output. For more information
about the use of these bits, refer to the AES-3 specification
available from the Audio Engineering Society web site at
http://www.aes.org.