Grass Valley K2 Media Client System Guide v.3.3 - Manual (Page 32)

32 K2 Media Client System Guide June 9, 2009
Chapter 1 Product Description
Application System
The Application system architecture is similar to that of standard PC-type computers.
It uses an ATX form factor motherboard that provides PCI board slots for expansion,
built in Ethernet, and USB ports.
Standard boards are as follows:
• Graphics Board — This board provides enhanced performance for screen graphics
and a connection for a VGA monitor.
• RS422 Boards — K2 Media Clients have been manufactured with two types of
RS-422 configurations, as follows:
• A K2 Media Client can have two RS-422 adapters. Each adapter is connected
via an internal USB cable to the motherboard, so while a RS-422 adapter does
occupy a rear panel slot, it does not plug into a PCI bus. Each adapter provides
two RS-422 ports for connecting equipment for remote control of the K2 Media
Client.
• A K2 Media Client can have one RS-422 adapter. The adapter is connected via
PCI slot to the motherboard. The adapter includes an external interface with
eight ports. On the external interface, ports 1–4 are active. This provides the four
ports for connecting equipment for remote control of the K2 Media Client.
• Dual Ethernet Board — This board provides additional Gigabit Ethernet ports,
which are used for redundant connections.
• RAID Controller — This board provides the RAID functionality and SCSI
connection for the internal disk drives. This includes both media and system drives
for internal storage models, but just the RAID 1 pair of system drives for external
storage models. The external ports on this board are not used. Some external
storage models provide RAID controller functionality on the motherboard instead.
Also on these models, RAID drive connections are provided by a SATA drive
connector board rather than a SCSI backplane.
The Application system uses a Windows operating system upon which all K2 Media
Client applications run for configuration and control of the unit.
Real Time System
The Real Time system uses Grass Valley boards to provide the core video disk
recorder functionality. Primary components are as follows:
• Real Time Processor (RTP) Board — This board provides a dedicated processor
and connections for media access and processing. It functions as a riser board,
connecting to the PCI slot below and the Codec board above.
• Codec Board — This board hosts the circuits responsible for encoding/decoding
video and processing audio and timecode. It also provides the majority of the
media-related input and output connectors.
• XLR Board — This board provides XLR connectors. It is primarily an extension
of the codec board to allow the space and orientation required for XLR
connections.