04/2019 - AE/V1.16
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Technetix Group Limited
Chapter 4: Optical node 1x1
4.1 General installation
The inner fibers are already pre-installed
inside the tray including the optional WDM’s
and are connected to the SC/APC barrels�
Powering the node can either be done
through the optional by-pass ports inside
of the amplifier or the input ports as this is
unused in optical configuration� There is also
an option for local 230VAC powering� The
external fibers are brought inside the node
through the 5/8” opening in the lid which is
covered by a blind-stop as per image at right�
Guide the external fiber through the fiber tray
and use the outer guide lines as much as
possible as these have a wider bending radius
for thicker pig-tails�
4.2 Downstream connection
The DBRX-A-1 can receive wavelengths from 1100 until 1610nm from the headend�
Connect the downstream fiber
to an optical power meter and
check that the level falls within
the operating window of the
optical AGC, from -7 dBm to +1
dBm� Operating in this range
guarantees maximum available
output power�
When the level is within range,
connect the fiber to the WDM or the downstream receiver and the downstream feed will become
active� The more tilt applied in the range up to 12 dB enables more output power� Use attenuators to
limit the output power to the required input level of the product minus the cable loss�
The external fibers are brought inside the node
through the 5/8” opening
