8935CF — Instruction Manual
21
Installation
To utilize this full Mux/Demux application, the following Grass Valley
modules are needed:
•
Two 8935CF 4 Channel Electrical to Fiber Converter modules with one
of each type of CWDM submodule
•
Two 8935FC 4 Channel Fiber to Electrical Converter modules with one
of each type of CWDM submodule
•
Two fiber-ready Grass Valley GeckoFlex modules with 1310nm sub-
modules
As shown in the detailed block diagram in
8935CF (Electrical to Fiber converters) at Location A are used to feed 8
channels of video to an 8939CFA. To utilize this application, one of each of
the following four CWDM submodule types must be installed on the two
8935CF modules:
•
SFP-CWDM-1 Dual Transmitter (1490nm and 1470nm frequencies)
•
SFP-CWDM-2 Dual Transmitter (1510nm and 1530nm frequencies)
•
SFP-CWDM-3 Dual Transmitter (1550nm and 1570nm frequencies)
•
SFP-CWDM-4 Dual Transmitter (1590nm and 1610nm frequencies)
Note
The four submodules can be installed in any location on the two 8935CF
modules as long as the outputs are cabled to the correct frequency input on
the 8935CFA. The installation configuration shown here is for clarity only.
The 1310nm fiber output from a Grass Valley GeckoFlex module is cabled
to the EXP (Expansion) port on the 8939CFA.
The 8939CFA module multiplexes these 9 frequencies down to a single
output from the COM port. A single fiber cable carries these 9 video fiber
channels to the COM port of the 8939CFA at Location B.
The 8939CFA at Location B acts as a demultiplexer and outputs 9 fiber
video channels to two 8935FC (fiber to electrical) modules, each with two
SFP-DRX-1 Dual Receiver submodules installed and a Grass Valley
fiber-ready module. The SFP-DRX-1 submodule will accept input frequen-
cies from 1270nm to 1610nm.
concerning the attenuation
needed depending on the length of cable run between 8939CFA COM
ports.
