Fiber Multiplexers And Backplanes; Fmb-X-2.5 Fiber Multiplexer Board; Figure 3-1: Remote Fmb-X-2.5 Front Panel View - Moog Focal 903 User Manual

903-0628-00 Rev. 1

3.0 Fiber Multiplexers and Backplanes

Fiber Multiplexer Boards (FMBs) are used to combine all of the video, Ethernet, and data signals into a single
optical link and then regenerate the original copper signals at the other end of the system. Backplane cards
are used to connect all of the Model 903 cards together within remote or console modules. A complete Model
903 system includes at least one remote and one console module.
3.1

FMB-X-2.5 Fiber Multiplexer Board

The FMB-X-2.5 cards use FPGA SERDES (Serializer/Deserializer) modules that run at an optical data rate of
2.5 Gbaud on both uplink and downlink. This high optical data rate allows more capacity for video, data and
Ethernet traffic than older FMBs. FMB-X-2.5 cards are designed to work only with singlemode fibers to
support the high data rates. System diagnostics can be accessed via the RS-232 port or RJ-45 Ethernet port
of both remote and console FMB-X-2.5 cards. More information about diagnostics is provided in the
diagnostics manual (P/N 903-0622-00).
Note: The FMB-X-2.5 FPGA-based SERDES optical link is not optically compatible with GLINK-based FMB
cards such as FMB-VTX, FMB-VRX or GLINK FMB-X cards. These older cards must be updated in pairs
(remote and console). More details about upgrading to FMB-X-2.5 are found in the Model 903 User's Guide
903-0623-00.
3.1.1 Remote FMB-X-2.5
Card P/N 903-5082-00
The front panel view of the remote FMB-X-2.5 is shown in the figure below. Redundant ST fiber connectors
are accessible on the right angled turret. An internal splitter provides roughly equal power output levels on
both ST connectors. Typically the output power should be greater than -6 dBm at 1310 nm (uplink) and the
receive sensitivity at the turret should be better than -24 dBm at 1550 nm (downlink).
BLANK OR 10M = GLINK FMB-X
Focal Technologies Corp.
ETHERNET RATE TEXT
100M = FMB-X-2.5
VIDEO SYNC
LEDS (SLOT A/B)
STATUS LEDS
(LINK, FO-RX, STAT)
DIAGNOSTICS SERIAL
PORT (RS-232)
ETHERNET PORT
OPTICAL LINK RATE
GLINK FMB-X = 10M
FMB-X-2.5 = 100M

Figure 3-1: Remote FMB-X-2.5 Front Panel View

Model 903-HD User's Guide – FMB-X-2.5
MODEL 903
VIDEO/DATA
MULTIPLEXER
100M
VIDEO
1 2 3 4
A
B
LINK
FO-RX
STAT
REDUNDANT
FIBER PORTS
(SPLITTER)
DUAL ST/PC
Page 3-1