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903-0623-00 Rev. A
The table below shows typical FMB-X-2.5 replacements for singlemode, dual fiber systems:
FMB-X-2.5 P/N
FMB-X-2.5 Card ID
FMB-X-2.5R-SMST-DF
903-5082-00
(2.5G FMB-X REMOTE)
FMB-X-2.5C-SMST-DF
903-5083-00
(2.5G FMB-X CONSOLE)
* FMB-X-2.5 cards are not compatible with medium speed backplanes. Backplanes must be changed to "-X" backplane versions.
With the higher 2.5 Gbaud optical data link available, FMB-X-2.5 samples all of the data channels as if
they were in the high speed slot of an old system. Furthermore, the RJ-45 Ethernet jack on the
FMB-X-2.5 is permanently enabled with support for both 10 and 100 Mbps Ethernet traffic through the
optical link with no loss in the number of regular data channels. Video channels from slots A and B are
10-bit resolution at all times.
A cross-reference of typical replacement backplanes is given in the table below. When upgrading
existing medium speed systems to FMB-X-2.5 cards, the medium speed backplanes must be replaced
with -X compatible backplanes shown. When upgrading high speed systems to FMB-X-2.5 cards, the old
backplanes may be used, but the newer backplanes support added diagnostics features.
Backplane Size
12 HP
16 HP
28 HP
32 HP
36 HP
28 HP
36 HP
44 HP
In addition to the standard RS-232 diagnostics available from the stereo jack, the FMB-X-2.5 also
provides more detailed diagnostics through a command mode via the stereo jack and through a WEB
server and MODBUS TCP/IP via the Ethernet port.
Table 1: FMB-X-2.5 Cross-Reference
Replaces P/N
903-5021-02
903-5072-00
903-5004-00*
903-5072-01*
903-5022-00
903-5073-00
903-5005-00*
903-5073-01*
Table 2: "-X" Backplane Cross-Reference
Backplane Type
Module
Medium Speed
Remote
High Speed
Medium Speed
Console
High Speed
Model 903 User's Guide, FMB-X-2.5 Version
Old FMB Card ID
FMB-VTX-01-ST-DF
Remote FMB/FMB-X, SMF, ST Conns.,
FMB-XRH-SMST-DF
FMB-VTX-21-ST-DF
Remote FMB/FMB-X, SMF, ST Conns.,
Medium Speed, Dual Fiber (Splitter)
FMB-XRM-SMST-DF
FMB-VRX-00-ST-DF
Console FMB/FMB-X, SMF, ST Conns.,
FMB-XCH-SMST-DF
FMB-VRX-20-ST-DF
Console FMB/FMB-X, SMF, ST Conns.,
Medium Speed, Dual Fiber (Switch)
FMB-XCM-SMST-DF
Old Backplane P/N
New "-X" Backplane P/N
903-0266-00
903-0260-01
903-0203-01
903-7202-00
903-0203-00
903-0236-51
903-0203-00
903-0225-00
Old FMB Description
High Speed, Dual Fiber (Splitter)
High Speed, Dual Fiber (Switch)
903-7212-00
903-7207-00
903-7217-00
903-7216-00
903-7218-00
903-7213-00
903-7218-00
903-7210-00
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