3.0 Multiplexer Motherboard Cards; Figure 3-1: Remote & Console Motherboard Optical Configuration - Focal 907 User Manual

907-0601-00 Rev. C

3.0 Multiplexer Motherboard Cards

Both the remote and console ends of the optical link incorporate a 907 motherboard. The motherboards
multiplex video and/or data channels, transmit the combined data over the optical link, demultiplex received
data from the optical link, store system diagnostic data, and provide power to other cards in the stack. All
motherboards can be operated as standalone cards or be assembled together in a stack including
907 expansion cards, media converter cards, and system modules.
Motherboards are typically supplied with a singlemode or multimode wavelength division multiplexer (WDM)
for operation over a single fiber, or without a WDM for two-fiber links. In the case of two-fiber communications,
optical multiplexing can be provided on another card in the stack, or the two-fibers can be used to link directly
from a remote motherboard to a console motherboard. On-board and off-board optical multiplexer
configurations are illustrated in Figure 3-1. Furthermore, motherboards may be configured to use CWDM
wavelengths and couplers to allow data/video from other cards, which have their own optical transceivers, to
be combined on the same optical fiber.
Remote
Motherboard
BackPlane
Serial Data I/O
Optical Tx/Rx
Optical MUX
(Optional)
Data/Video I/O
Figure 3-1: Remote & Console Motherboard Optical Configuration
The flexibility of the optical link between motherboards enables a wide range of application requirements.
Cards configured to use singlemode, high-power, and high-sensitivity CWDM transceivers satisfy large-
bandwidth, long-distance data and video transfer applications, whereas cards configured to use multimode,
low power, and low-sensitivity transceivers satisfy applications requiring lower bandwidth, shorter distance,
and lower cost.
Model 907 cards are available in pressure tolerant versions with up to 6000 psi rating.
Focal Technologies Corp.
907
Optical MUX
Model 907 Video/Data Multiplexer – User's Guide
907
Motherboard
Optical MUX
Optical Tx/Rx
Optical MUX
(Optional)
Console
BackPlane
Serial Data I/O
Data/Video I/O
Page 3-1