903-0628-00 Rev. 1
Model 903-HD User's Guide – FMB-X-2.5
Focal Technologies Corp.
Page 2-1
2.0 System Overview
This document contains information about 903 high density systems based on FMB-X-2.5 boards (fiber
multiplexer boards with optical link running at 2.5 Gbaud).
A high density multiplexer system consists of a Model 903-HD high density remote module (vehicle or ROV
end) and a standard Model 903 console module (surface or shipboard end). The console module is provided
completely packaged in a Eurocard rack integrated with a power supply and all necessary optical
components. (Eurocard PCB dimensions are 100 x 160 mm.) The remote module is provided as a complete
rack, including backplane, fan, and a data I/O box.
The high density remote modules can be provided in 12 HP or 16 HP racks depending on the number of
video and data channels required.
The standard console modules can be provided in 42 HP or 50 HP racks. Note that 4HP corresponds to a slot
width of 0.8 inches or roughly 20 mm.
2.1 Multiplexer Systems
There are two types of 903 high density systems that are covered by this document. One type is the
4VID system which includes 4 composite/analog video channels and the other type is the 8VID system
with 8 composite/analog video channels.
The following table provides a summary of the signal types
supported by these systems.
Table 2-1: Model 903-HD Systems – Signal Types Supported
System
Card Rack
Number of Signal Types Supported
Type
End
P/N [Type]
Width
(HP)
Serial Data
Composite
(Analog)
Video
Ethernet
RS-232
(Dedicated)
AIB Plug-In cards*
(Reconfigurable)
10/100M
4VID
Remote
903-0004-03 [CBP-100-XR]
12
4
4
4
1
Console
903-0007-07 [CBP-121-XC]
42
-
8
8VID
Remote
903-0005-12 [CBP-200-XR]
16
8
8
8
1
Console
903-0007-06 [CBP-241-XC]
50
-
16
* AIB Plug-In supported signal types include: RS-232, RS-485, RS-422, TTL, Tritech Sonar ARCNET,
Hydrophone/Analog, MS-900 Analog Sonar and CAN Bus (see section 4.3.1 for more details).
Summary of Contents for Focal 903
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