LAWO mc296, Инструкция по установке и обслуживанию, Страница: 31 / 65

mc²96 Installation & Service Guide Version: 1.0/3 31/65
4. Installation
4.14.2 Connecting the Local IO to the Core
RAVENNA/AES67 Connections
To use the local IO signals, you must connect at least one of the RAVENNA/AES67 ports to the Core. The
connection can be made in one of two ways: either directly, point-to-point (using RAVENNA Link*), or indirectly
via the Media Network (using RAVENNA).
Redundancy via SMPTE ST2022-7 (SPS) is only available when using a networked connection.
* RAVENNA Link is supported by Nova73 only.
Wiring
Internally, there is a single RAVENNA/AES67 interface which is wired, externally, to two ports: Primary and
Secondary . Each port is available on either copper or optical fiber (via SFP).
When using RAVENNA Link with Nova73, the connection to the Core must be directly wired from the Primary
port. In this instance redundancy is not supported. Thus, in the event of a link failure, you will lose the local IO
signals.
When using RAVENNA, the connection(s) to the Core must be made via the Media Network. If redundancy is
not required then connect only the Primary port. If redundancy is required, then connect both the Primary
AND Secondary ports to the red and blue networks.
In each case, the physical connections must match the AdminHD configuration.
Cable Specifications
To use the copper ports, choose an Ethernet cable that meets the following specification:
·
Cable : CAT 5 or better (CAT 5e/6/7); straight (1:1) or crossed cable.
·
Connector : RJ45.
·
Network Speed : 1000, 100 or 10 Base-TX LAN. 1000 Base-TX (Gigabit Ethernet) is recommended.
·
Length : up to 80m.
To use the optical fiber ports you must fit a Lawo-certified SFP module . The SFP determines the cable type,
connector and maximum distance.
If both copper and fiber are installed at start-up, fiber is the preferred medium. In either case, the second
medium can be hot-plugged without disturbing the current operating connection. If a connection breaks, then
the interface automatically switches to the second medium (if installed). Note that there will be an audible audio
interruption until the automatic stream setup re-establishes the connection. Therefore, the second medium
should not be used to provide redundancy.
Status LEDs
The LOCK / ERR LED indicates the status of the connection:
·
Green, static = the link is active, and the signal and streaming are ok.
·
Red, static or blinking = the link is active but has one of the following errors: streaming format error,
streaming lock error or stream is asynchronous.
·
Off = no signal.
The Standby LED indicates the redundancy status:
·
Yellow = the port is configured as a redundant port and is in standby.
·
Off = the port is active.