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29 Technetix Group Limited Rev.1.0.1_0217
Chapter 5: Optical node 1x1
5.1 General installation
The inner fibres are pre-installed inside the tray including the optional WDM’s and are connected to the
SC/APC barrels.
Powering the node can be done through the optional
by-pass ports inside the amplifier or the input ports (as
this is unused in optical configuration), there is also an
option for local 230VAC powering. The external fibres are
brought inside the node through the 5/8” opening in the
lid which is covered by a blind-stop as per figure 6.
Guide the external fibre through the fibre tray using the
outer guide lines as much as possible (as these have a
wider bending radius for thicker pig-tails).
5.2 Downstream connection
The DBRX-A-1 can receive wavelengths from 1100 until 1610nm from the headend.
Connect the downstream fibre to an optical power meter and check that the level falls within the operating window of
the optical AGC, from -7dBm to +1dBm. Operating in this range guarantees maximum available output power.
When the level is within range, connect the fibre to the WDM or the downstream receiver and the downstream feed will
become active. The more tilt applied in the range up to 12dB. Use attenuators to limit the output power to the required
input level of the product minus the cable loss.
(Figure 6)