Grass Valley Apex v.2.0 - Manual (Page 83)

APEX — Installation and Service Manual 85
Expanded (Multi-Chassis) Systems
Fiber Extenders (Standard Apex Only)
Fiber Extenders are used to connect a Remote chassis or system to a Local
chassis. In general, you need one Fiber extender per individual or group of
remote Apex chassis. Any local chassis (chassis that are located closer than
four meters) can use InfiniBand cables. If two or more frames of a
multi-frame standard Apex system must be located more than four meters
apart, a minimum of two (2) Apex Fiber Extenders, model APX-FBR-EXT,
must be ordered to connect the Remote chassis to the local chassis. See
Figure 14 (optional redundant cables are not shown).
Two lengths of fiber optic cable are available: 300 meters (984 feet) and 5000
meters (16,400 feet or 3.1 miles). If the 300 meter cables are used, then the
Fiber Extenders should be installed with APX-SFP-M300 small form-factor
plug-in multi-mode transceivers; if 5 km cables are used, then
APX-SFP-S5000 small form-factor plug-in single-mode transceivers should
be installed. Each optical cable pair requires two transceivers (which are
plugged into the Fiber Extender ports). In the example shown in
Figure on
page 83 , a total of 12 transceivers would be needed; i.e., one transceiver for
each end of each fiber optic cable pair. If redundant cables were installed, a
total of 24 transceivers would be needed for this system.
Each Fiber Extender is 1 RU high, approximately 12 inches (30 mm) deep,
and includes I/O ports for fiber optic cable connection to the remote
module and InfiniBand ports for connection to a local frame. Each module
also includes redundant power supplies and all rear panel ports needed for
redundant cabling. See
Figure 33 below.
Note Master Clock cabling is not required for the remote frame(s) connected using
fiber extenders. The clock signal is recovered internally in this application.
Figure 33. Apex Fiber Extender : Front and Rear View