Grass Valley 8939FCA User Manual
Page 25
8939FCA/FCB — Instruction Manual
25
8939FCA and 8939FCB Applications
As shown in the detailed block diagram in
, an 8943CF
(4 Channel Electrical to Fiber converter) and an 8943FC (4 Channel Fiber to
Electrical converter) at Location A are used to send 4 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-CWDM3G-1-K Dual Transmitter (1490nm/1470nm frequencies)
•
SFP-CWDM-2 Dual Transmitter (1510nm/1530nm frequencies)
•
SFP-CWDM-3 Dual Transmitter (1550nm/1570nm frequencies)
•
SFP-CWDM-4 Dual Transmitter (1590nm/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 8939FCA module multiplexes these 8 frequencies down to a single
output from the COM port. A single fiber cable carries these 8 video fiber
channels to the COM port of the 8939FCA at Location B.
The 8939FCA at Location B acts as a demultiplexer and outputs 8 fiber
video channels to two 8943FC (fiber to electrical) modules, each with two
SFP-DRX-1 Dual Receiver SFP devices installed and a Grass Valley
fiber-ready module. The SFP-DRX-1 SFP device will accept input frequen-
cies from 1270nm to 1610nm.