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903-0623-00 Rev. A
Console GLINK FMB-X
D.2
Card P/N 903-5073-XX
Note: This card is obsolete and can no longer be ordered. Use the FMB-X-2.5 card for new
designs.
The front panel view of the console GLINK FMB-X is shown in the following figure. Redundant ST fiber
connectors are accessible as straight bushings on the front panel marked "F1" and "F2". An internal fiber
switch chooses one of the fibers for the optical link, either automatically or manually via the front panel
switch. Output power should be greater than -2 dBm at 1550 nm (downlink). Receive sensitivity at the
front panel should be better than -28 dBm at 1310 nm (uplink).
DIAGNOSTICS SERIAL
The description of the LEDs on the front panel of the Console FMB-X card is shown in the Table below.
LED
VIDEO LEDs are green when sync is present on each video channel from slot A and slot B
VIDEO
in the rack.
LINK
LINK LED is green when a valid optical link is being received and red if no link is present.
FO-RX LED is green when the received optical power is well above threshold. This LED
will change to orange (warning), indicating low margin, or red (alarm), indicating low optical
FO-RX
power. Problems with optical power should be investigated using the diagnostic software
and/or fiber optic power meters.
VIDEO SYNC
LEDS (SLOT A/B)
FMB-X STATUS LEDS
(LINK, FO-RX, STAT)
PORT (RS-232)
FIBER SWITCH
CONTROL/STATUS
ETHERNET PORT
(10 Mbps)
Figure D.2-1: Console GLINK FMB-X Front Panel
Table D.2-1: Console GLINK FMB-X Front Panel LEDs
Model 903 User's Guide, FMB-X-2.5 Version
MODEL 903
VIDEO/DATA
MULTIPLEXER
VIDEO
1 2 3 4
A
F1
B
LINK
FO-RX
STAT
F1
AUTO
F2
F2
Description
REDUNDANT
FIBER PORTS
(SWITCH)
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