digital audio
modular
C8000
processing system
Dolby Medatada serial RS485 I/O
C8651
features
• Serial RS485 asynchronous Dolby metadata input
• Serial RS485 asynchronous Dolby metadata output
• C8k Dolby metadata internal bus inserter
• C8k Dolby metadata internal bus extractor
functional description
The C8651 allows to receive and transmit asynchronous Dolby metadata (RDD6) via serial RS485
interface. The metadata received will be inserted into a pre selected audio data bus for reception by
any module within a c8k frame. This proprietary metadata transport mechanism is very flexible
and powerful for metadata exchange and management.
Since Junger Audio is using the AES User Bits for transportation, this method is compatible with all kind of
AES/EBU related audio transport interfaces like AES3, AES3id, MADI and SDI embedded audio.
If one connects such an audio bus to a C8188/89 AES output you will be able to move the metadata
alongside with discreet audio.
The C8651 will also extract metadata from a c8k audio bus and will move it to the asynchronous serial
RS485 output connector. The source of such metadata can be any kind of module inside a c8k frame
(e.g. the VANC Dolby metadata de-embedder).
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digital audio
modular
C8000
processing system
Dolby Medatada serial RS485 I/O
electrical specifications
RS485 input
Connector: 9pin Sub-D female
Format: asynchronous 115kBit/sec., Dolby propriatary format
RS485 output
Connector: 9pin Sub-D male
Format: asynchronous 115kBit/sec., Dolby proprietary format
General
Backplane connector: ref. to DIN41612, 64pin, a+b, male
Power supply: +5V DC
Consumption: approx. 120mA
Dimensions: 3RU, 4HP, 160mm deep
Installation: hot pluggable
C8651
page 2/7
digital audio
modular
processing system
Dolby Medatada serial RS485 I/O
installation
C8000
C8651
switch settings
INIT Pressing the INIT button during power up will initialize the module
parameters to factory default values.
ADDRESS Set the CAN ADDR rotary encoder to an address, which is not in use by
another module of a C8000 frame (for details regarding CAN addressing,
see C8000 system manual).
page 3/7
connector :
connector :
digital audio
modular
C8000
processing system
Dolby Medatada serial RS485 I/O
C8651
SW1
1 = ID +16 ON
CAN address is extended by +16 (counting from 0x10 to 0x1F)
OFF
CAN address is standard (counting from 0x0 to 0xF)
2 = Not Used OFF
3 = MASTER: OFF
Must stay OFF
4 = BUS-EN: ON
Connects the outputs to the C8k audio buses on power up
OFF
Disconnects the module outputs from the C8k buses on power up
Important note! To avoid audio bus conflicts when you replace a C8651 or install an additional one
and the configuration is unknown, the output bus drivers must be disabled before inserting it. If all
settings are done remotely and the unit fits into the bus assignment scheme of a frame, you must
remove it and place the switch back into position BUS-EN=ON.
pin assignment of the RS485 connectors
Metadata IN
female 9 pin Sub-D
1 GND
2 NC
3 Rx data in +
4 GND
5 NC
6 GND
7 NC
8 Rx data in 9 GND
female 9 pin Sub-D
1 GND
2 NC
3 Tx data out +
4 GND
5 NC
6 GND
7 NC
8 Tx data out 9 GND
Metadata OUT
page 4/7
digital audio
modular
C8000
processing system
Dolby Medatada serial RS485 I/O
web browser based GUI
Set up of all configurations, parameters and functions via a web browser.
See also C8702 Frame Controller manual and respective firmware release notes.
Layout and functionality are related to firmware version 1.7.x of the C8702.
OVERVIEW The example below shows a C8651 named Metadata I-O
C8651
Clicking on the spanner tool within the module graphics of the C8651 will open
the pages of the module.
page 5/7
digital audio
modular
processing system
Dolby Medatada serial RS485 I/O
DEVICE
C8000
C8651
Device Name a 16 character device name can be set
Restart Module warm starts the module (like a reset)
Initialize recalls factory default settings
Controller Version firmware version of the built-in module controller
Backup will store all module data from its NV-memory to file
Restore will restore module data from file to its NV-memory
page 6/7
digital audio
modular
processing system
Dolby Medatada serial RS485 I/O
SETUP
C8000
C8651
Metadata Inserter
From C8000 Bus here you must select an audio bus where you want to insert the
Metadata Inserter the metadata inserter will insert the decoded serial metadata from the
To C8000 Bus here you must select an other bus that will carry the metadata after
Enable Bus Driver one can enable / disable the Bus Driver to set up the module without
Metadata Extractor
From C8000 Bus here you must select an audio bus that carries Dolby metadata. If such
external serial metadata. It may be a 2Ch or 8Ch multiplex bus.
9-pin input into the USER bits of the respective audio signal.
inserting
interference with other modules already installed.
bus is in 8Ch multiplex mode you may select one of four pairs that has
Dolby metadata attached to it.
page 7/7
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