GRASS VALLEY CR6400 Series, Руководство пользователя

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CR6400
User’s Guide
Each I/O card has 32 ports. There are 16 input ports on the left (as you face the rear of the router)
and 16 outputs on the right. The connectors for both the 3Gig card and the AES card are DIN 1.0/
2.3 connectors (which we usually call “coax” connectors).
The I/O cards are not configurable in any way, apart from their presence or absence in the router.
The crosspoint card is not configurable and the control card is not configurable.
At this revision, the router must contain only 3Gig cards or only AES cards. It contains 4 cards. If
the router is populated with 3Gig cards, the router is considered a CR6464-3Gig and switches
video. If the router is populated with AES cards, the router is considered a CR6464-AES and
switches audio. A router frame having no cards is considered of “undefined” type.
Figure 2-2 shows a simplified block diagram of a CR6400 router:
Fig. 2-2: Block Diagram of the CR6400
Control Card
The control card (also called the CPU card) is the heart of the router:
These are its functions:
•
Receive button presses made at the panel and send status (button illumination) to the panel.
•
Implement the “architecture” of the router.
•
Receive reference video.
•
Maintain buffer for video timing with respect to the video reference.
•
Execute switches (with respect to the video reference) and perform locks and unlocks.
•
Read the rotary switch at startup.
•
Communicate with an automation or control system
•
Communicate with other CR6400 family routers over Ethernet.
64 64
μP Logic
Inputs
(Equalized)
Outputs
(Reclocked)
Crosspoint
Switch
Control
Panel
Video
Reference
Automation
Ethernet
(optional)
Serial (DE9) Ethernet (RJ-45) Video Ref (BNC, 75
W
) Alarm LED
Power LED