Apex Digital apex 10 Wartungshandbuch PDF herunterladen (Seite 77)

APEX — Installation and Service Manual 79

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 81 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 81.

If two or more frames of a multi-frame standard Apex system must be

located more than four meters apart, model APX-FBR-EXT Apex Fiber

Extenders must be installed at each location. See

Fiber Extenders (Standard

Apex Only) on page 85.

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 82 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

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Apex Digital apex 10 Wartungshandbuch Seite 77