Specifications
Modular I/O Configuration Guide160
To C8000 System Bus
This assigns the encoder output to the frame’s busses and to the external BNC output.
Enable Bus Driver
De-selecting Enable Bus Driver disables the output drivers.
Mode
The Dolby module offers the following operating modes for both encoders:
• PCM encoding to Dolby D or Dolby D+
• Dolby D-to-D+ transcoding.
Metadata Source
Preset
The program’s metadata and setup parameters for each encoder are defined manually and can be saved in a Preset. A Preset can
be loaded, edited and saved.
Bus
Metadata for the encoder is extracted from the USER bits in Metadata Subset format of one of the incoming PCM signals.
External (RS485)
Metadata for the encoder is received by the 9-pin D-Sub connector on the front of the module.
Error Detection
The serial audio data from the frame bus can be monitored to properly position an Error-Flag. A bad Error-Flag indicates a distur-
bance upstream (i.e., input signal, input module, other DSP module). Error Detection is activated globally but specific bus inputs
can be enabled for error detection (Ch 1/2, Ch 3/4, Ch 5/6, Ch 7/8, Ch 9/10). The status of the busses is displayed on LEDS on
the left.
Bus Status
The bus status, as well as the external Input (BNC) status, may be presented to external monitoring systems using SNMP. The
frame controller summarizes such status information and generates SNMP traps for the frame as an entity or may activate GPOs
(if GPIO modules are installed). The SNMP manager may later poll the module’s status for more detailed information per input.
Channel Status Bits
Select Professional or Consumer status bits for bus outputs OUT1 and OUT2 and the BNC output.
METADATA ENC 1 Page
The METADATA ENC 1 Page adjusts metadata parameters if the Metadata Source for the encoder is set to Preset on the
SETUP/ROUTING Page. In Preset mode, Extended Bitstream Information is enabled. In this case the Nominal Center and Surround
Mix Level are mapped from the Lo/Ro parameters.
If the Metadata Source is set to Bus, it is possible to manually overwrite the Data Rate value.
Grey Error detection disabled
Green No error detected
Red Error condition
See “SNMP Functions Setup” on page 62.
A full explanation of the Dolby Metadata system is beyond the scope of this manual. We recommend studying the
“Dolby Metadata Guide” and other publications available from Dolby (www.dolby.com).