Motorola Canopy Powerline MU - Manual (Page 30)

Powerline MU
Page 30 of 112
Also, be sure not to touch any bare wire or bus bars. (See Figure). Note: To
reduce attenuation, attach the couplers to the LOAD side (to the meters)
cables, not the LINE side (from the transformer) cables, if possible.
13. Be sure couplers do not slide. If needed, use cable ties or rubber grommets to
assure stability.
14. Tighten the conduit fitting to secure the coax cables.
15. Replace the panel of the cabinet.
4.2.4 Multiple Transformer
Multiple transformer installations are typically found in high-rises and larger commercial
buildings. If this is a multiple-dwelling unit, it will probably be individually metered, but
with more than one transformer. These buildings often have transformers on multiple
floors and can even have different electrical feeds into the building. These situations
require more planning than the preceding installations and will often require additional
equipment, such as Panel Extenders and Hybrid Adapter units. They will sometimes
even require multiple Gateways. Ideal installation here is similar to the Individually
Metered scenario, but with more planning. The need here is to be sure you can get the
internet connection to each of these Gateways. This can be done with telco cables if
there is conduit.
All of these buildings have the same basic layout electrically. They all have a main feed
that then distributes to the consumer’s premise. The closer you get to the consumer, the
better, but you also want to plan to connect to the point that serves the most customers
with the least signal loss.
Here is one example of an effective coupling solution:
• Install Gateway in 2nd floor electrical closet.
• Couple floors 1-3 together with a Panel Extender.
• Either add a second Gateway on floor 5 for floors 4-6 or extend coupling from initial
Gateway by adding additional splitters, based on signal strength. Try to use no more than
two splits because of signal degradation.
• The signal will not travel back through the 2
nd
floor transformer and through the
transformers on other floors, so extending the coupling with additional couplers and
splitters will be necessary if one Gateway serves multiple meter banks.