GRASS VALLEY APEX -, Installation And Service Manual

Page: 38 / 132

38 APEX — Installation and Service Manual
Section 2 — Planning Guide
Expanded (Multi-Chassis) Systems
Standard Apex Models
With a standard Apex chassis, 256 x 256 frames can be 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 8 on page 40 shows a fully expanded (1024 x 1024) system with 6
InfiniBand expansion cables. Smaller systems will require fewer cables (see
Table 1 on page 40 ); the connector numbering scheme remains the same as
that shown for the large system. As shown in Figure 7 , each group of four
InfiniBand Expansion connectors correspond to one MX-34000 Matrix
board.
Expanded Apex systems with more than one chassis require RG-59 or RG-6
Master Clock connections in addition to the InfiniBand cables. The three
Master Clock Out connectors are functionally identical, i.e., they can be
connected to any chassis. See
Figure 9 on page 40 . As shown on Figure 7 on
page 37 , each group of four Master Clock BNC connectors corresponds to
a Matrix board.
Apex Plus Models
If a 2048 x 2048 system is required (or later expansion to that size is antici-
pated), the Apex Plus frame type is used. Apex Plus frames have either
input boards only or output boards only. For a 2048 x 2048 system, eight
Apex Plus frames would be needed: four with 512 inputs each, and four
with 512 outputs each. Systems may be asymmetrical if desired (having an
unequal number of inputs and outputs).
The illustration in Figure 10 shows a fully expanded (2048 x 2048) system
with 16 InfiniBand cables (optional redundant cables are not shown).
Smaller systems will require fewer cables; the connector numbering
scheme remains the same as that shown for the large system.
Note The InfiniBand cables cannot be longer than four meters (13 feet).