C
HEETAH
128
S
ERIES
–
C
HAPTER
8
81-9059-0587-0
Rev. B
Proprietary Information of
QuStream Corp
.
8-12
8.7
M
ATRIX
F
RAME
C
ONTROLLER
(MFC)
The matrix frame controller, located on the right front of the unit, is illustrated in Figure 8-7. 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 front panel of each matrix frame controller is a
diagnostic port (on the far right) used for troubleshooting (for further information, refer to Chapter
9 and Appendices).
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
F
IGURE
8-7
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 Appendices for details on Ethernet
configuration options).
Содержание PESA CHEETAH 128 Series
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