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903-0623-00 Rev. A
FMB-X-2.5 FUNCTIONAL DIFFERENCES
In addition to the differences in the optical data rates, there are some functional differences between the
FMB-X-2.5 cards and the obsolete FMB cards (FMB-VTX/VRX and GLINK FMB-X), as summarized in the
table below:
Table 3: FMB-VTX/VRX, GLINK FMB-X versus FMB-X-2.5 Functionality
Function
Video
Digitization
Ethernet
Port
Diagnostics is RS-232 format only,
Diagnostics
available at front panel DB-9 on
Formats
console FMB-X only
High Speed
Supports 1 high speed data slot and 3 low speed data slots
Data Slot
Optical
Data Rates
Compatibility
FMB-VTX/VRX
9-bit video on high speed systems
8-bit video on medium speed systems
Not available
1.375 Gbaud uplink, high speed systems
687 Mbaud uplink, medium speed systems
172 Mbaud downlink, all systems
Not Applicable
Model 903 User's Guide, FMB-X-2.5 Version
GLINK FMB-X
10 Mbps optical throughput, but
disables data slot 4 on backplane
(Front panel RJ-45 is 10/100 Mbps
compatible)
Diagnostics is RS-232 format only,
available at front panel stereo jack
on console FMB-X
Backwards compatible with
FMB-VTX/VRX using GLINK.
FMB-X-2.5
10-bit video on all channels
100 Mbps optical throughput with
no loss of any other data channels
(Front panel RJ-45 is 10/100 Mbps
compatible)
Diagnostics is RS-232 format at
front panel stereo jack or Ethernet
format at front panel RJ-45 jack
All data slots are high speed,
allowing higher data rates on
RS-485 channels, for example.
2.5 Gbaud on both uplink and
downlink
This is not backwards compatible
with any FMB-VTX/VRX or FMB-X
using GLINK.
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