PESA Cheetah 1024x256, Руководство пользователя

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C
HEETAH
S
ERIES
S
WITCHERS
– C
HAPTER
11
81-9059-0570-0 Rev. C
Proprietary Information of PESA S
WITCHING
S
YSTEMS
, I
NC
. 157
11.8 M
ATRIX
F
RAME
C
ONTROLLER
(MFC)
The matrix frame controller, located on the right front of the unit, is illustrated in Figure 70. For every
frame type, at least one Matrix Frame Controller (MFC) is required. The function of the frame
controller is to determine frame size, level, input offsets, output offsets, plus other physical
characteristics of the frame hardware. Both PESA’s PRC protocol and NET PRC protocol are available
to the MFC. With the NET-PRC protocol, the MFC has the ability to communicate to a system
controller via Ethernet connection. More features include SNMP support and redundant MFC cards
with auto changeover. On the frame of each matrix frame controller is a diagnostic port (on the far
right) used for troubleshooting (for further information, refer to Chapter 12 and Appendix A).
8 8 8 8 8 8 8 8
MATRIX FRAME CONTROLLER
COMMUNICATIONS
RX RX LNK VT2
TX
PRC
RX
TX
SCROLL
RESET ACTIVE
TX
422
ACT
NET VT1
+28
+5
+3
CONTROL STATUS
FIGURE 70: Matrix Frame Controller
The MFC has the ability to provide dual operations. By setting each MFC with its own Ethernet
address, updates and active switching can be done in parallel that allows immediate crossover during a
card failure or network interruption (refer to Appendix A for details on Ethernet configuration options).