907V Multiplexer Motherboard - Focal 907 User Manual

907-0601-00 Rev. C
3.2

907V Multiplexer Motherboard

The 907V (Video) multiplexer motherboards have six on-board video channels for unidirectional (remote to
console) transmission of NTSC/PAL, Y/C (S-video), RGB, and YPrPb video formats. Although the 907V does
not have any on-board data channels, it can multiplex up to six stacked expansion cards via the PC/104
backplane data ports.
The 907V multiplexer motherboard uses a small form-factor pluggable (SFP) optical transceiver for quick and
reliable configuration of optics and an array of board-edge LEDs for diagnostic purposes. Both uplink and
downlink run at 1200 Mbaud with various wavelength options available. Typical optical power budgets are 20
dB or greater. In higher budget systems, a minimum of 5 dB attenuation is recommended for bench testing to
ensure the receivers are not saturated. The 907V is recommended for singlemode operation only, although
short multimode links are possible (< 500 m) with appropriate transceivers.
Each 907V is switch-configured to provide data and video multiplexing. Switch SW1 is used to select one of
the following modes:
Six channels of 8-bit, unidirectional video combined with six bidirectional data ports via the PC/104
backplane (default configuration)
Four channels of 10-bit, unidirectional video, combined with six bidirectional data ports via the PC/104
backplane
Six channels of 10-bit, unidirectional video, with no data ports via the PC/104 backplane
Since there is no bidirectional requirement when configured in the six 10-bit video channel mode, only a
single uplink fiber is required and an optical WDM is not needed unless the card is part of a CWDM
configuration.
Switch SW1 on both the remote and console cards is used to set the video/data mode and optical
configuration described above. Switch SW2 configures the input video format from any one of eight possible
arrangements. Details of the video format options are described in the configuration drawing 907-2026-00.
The 907V remote is available in pressure tolerant versions with up to 6000 psi rating.
Focal Technologies Corp.
Model 907 Video/Data Multiplexer – User's Guide
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