C
HEETAH
128
S
ERIES
–
C
HAPTER
8
81-9059-0587-0
Rev. B
Proprietary Information of
QuStream Corp
.
8-9
8.6
128
X
128
V
IDEO
(C
ROSSPOINT
)
M
ATRIX
C
ARD
8.6.1
128x128 Video Crosspoint Matrix Card Overview
The 128x128 Video Matrix Card selects one of 128 inputs to each of 128 outputs. Input signals
from the input buffer card are buffered to the input of a high-speed matrix. The output of the
matrix is again buffered and sent to the output combiner cards. Each matrix card contains input
buffer chips (octal bus transceivers) that drive into a single 128x128 crosspoint configuration
(see Figure 8-5).
SD Input
HD Input
Fiber Input
Control
128x128
Crosspoint
Matrix Card
Matrix Frame
Controller
DAC
Dual
Fiber
Fiber
Dual
270Mb/s
SD Output
1.5Gb/s HD
Output
HD to SD
Conversion
F
IGURE
8-5
128X128 Video Crosspoint Matrix Card Diagram
Summary of Contents for PESA CHEETAH 128 Series
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