GRASS VALLEY APEX -, Installation And Service Manual

Page: 79 / 132

APEX — Installation and Service Manual 79
Expanded (Multi-Chassis) Systems
Expanded (Multi-Chassis) Systems
Standard Apex Models
With a standard Apex chassis, 256 x 256 frames are connected to form
512 x 512, 768 x 768, or 1024 x 1024 systems. The frames are connected by
four-meter (13 ft.) InfiniBand cables.
Note The InfiniBand cables cannot be longer than four meters (13 feet.)
Figure 29 on page 80 shows a fully expanded (1024 x 1024) system with 6
InfiniBand cables. Smaller systems will require fewer cables; the connector
numbering scheme remains the same as that shown.
Expanded Apex systems, with more than one chassis, require RG-59 or
RG-6 coaxial connection.For example, Master Clock connections in addi-
tion to the InfiniBand cables. Each group of four Master Clock BNC connec-
tors correspond to a Matrix board. The three Master Clock Out connectors
are functionally identical, that is, they can be connected to any chassis. See
Figure 30 on page 80 .
Apex Plus Models
Apex Plus frames are identified by having either input boards only or
output boards only. These systems can be expanded to 2048 x 2048 using
eight frames.
Systems may be asymmetrical if desired (having an unequal number of
inputs and outputs).
Figure 31 on page 81 shows a fully expanded (2048 x 2048) system with 16
InfiniBand cables. Smaller systems will require fewer cables; the connector
numbering scheme remains the same as that shown.
Redundant InfiniBand cables (not shown in the drawings) can be added if
each chassis is equipped with a secondary matrix board. In this case the
Expansion B connectors would be used; the connector numbers would be
the same as those shown.
Expanded Apex Plus systems require RG-59 or RG-6 coaxial Master Clock
connections in addition to the InfiniBand cables. Each group of four Master
Clock BNC connectors correspond to a Matrix board. The three Master
Clock
Out
connectors are functionally identical, i.e., they can be connected
to any chassis.
For both frame types, the frame numbers are determined by the position of
the rear panel Frame switch.