Grass Valley Apex v.2.0 - Manual (Page 43)

APEX — Installation and Service Manual 45
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 ordered 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 ordered. Each optical cable pair requires two transceivers (which are
plugged into the Fiber Extender ports).
In the example shown in Figure 14 on page 46 , 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. Grass Valley recommends that you perform a com-
plete optical power survey to precisely determine your systems' capability.
Each Fiber Extender is 1 RU high, approximately 12 inches (30.5 cm or
exactly 12.101357 inches) deep, which is the same depth as the Apex itself.
The Fiber Extender 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 13 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 13. Apex Fiber Extender: Front and Rear Views