BRX-XLR User Guide
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180-0145-001-R05
7.6 Splicing Pairs
When installing a BRX-XLR device, it is important to follow the proper technique to ensure your
safety and a good quality splice. You should follow the standard splicing Method and Procedure in
place at your organization.
8 How to Mitigate the Impact of Disturbers
A number of factors have a negative impact on xDSL performance and will disturb the performance
and the quality of service that can be delivered to subscribers.
Actual data rates between the DSLAM and the user CPE may be lower depending on the conditions
of the outside plant (OSP) and the location where the BRX-XLR unit is installed. Other signals such
as T1, E1, ISDN, HDSL and G.SHDSL in the same cable binders will typically reduce the achievable
bandwidth on ADSL2+/ADSL2 and ADSL. Inserting the BRX-XLR on these pairs may help to reduce
the impact of these disturbers.
8.1
Grounding and Bonding
Although grounding is usually observed within the cabinets or pedestal at the splice point, other
sections of the cable pairs or binder may not be grounded. Grounding of the sheath also needs to be
done properly. Grounding the BRX-XLR units is not sufficient to mitigate against power induction
problems if the cable binder is not bonded or grounded since the noise will enter the pair at the non-
grounded section and travel in the sheath and impact all of the pairs in the binder.
When aerial power lines (exceeding 300 volts) other than triplex cables servicing homes are in the
same easement or alongside a crossover buried cable, the following grounding procedures are highly
recommended. A ground
with impedance less than 25 Ohms
is required at both ends of an
exposure and at every closure within the paralleling exposure. When the leads have minimal
enclosures, additional enclosures may need to be placed so the frequency of grounds does not
exceed 300 meters (1,000 feet).
