Grass Valley 8939FCA User Manual
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8939FCA/FCB — Instruction Manual
8939FCA and 8939FCB Applications
As shown in the detailed block diagram in
, two 8943CF
(Electrical to Fiber converters) at Location A are used to feed 8 channels of
video to an 8939FCA.
To utilize this application, one of each of the following four CWDM SFP
device types must be installed on the two 8943CF 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 SFP devices can be installed in any location on the two 8943CF
modules as long as the outputs are cabled to the correct frequency input on
the 8939FCA.
The 1310nm fiber output from a Grass Valley GeckoFlex module is cabled
to the EXP (Expansion) port on the 8939FCA.
The 8939FCA 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 8939FCA at Location B.
The 8939FCA at Location B acts as a demultiplexer accepting the incoming
fiber signals and outputting electrical outputs from the 8943FC (fiber to
electrical) modules, each with two SFP-DRX-1-K Dual Receiver SFP devices
installed and a Grass Valley fiber-ready module. The SFP-DRX-1 SFP
device will accept input frequencies from 1270nm to 1610nm.