ZINWAVE 2700
DISTRIBUTED ANTENNA SYSTEM
-
INSTALLATION AND TECHNICAL MANUAL
ZINWAVE 2700 DAS - INSTALLATION AND TECHNICAL MANUAL
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Where there are enough optical fibres in an existing multimode optical fibre backbone cable to allow the allocation of a
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complete cable to the ZinWave 2700 DAS then the backbone panel at the FD/HC may be replaced with a ZinWave
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Splice Panel as shown in Figure 4-8. The latter enables a lower channel insertion loss (see 4.3.3) and more secure
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distribution of the services provided over the ZinWave 2700 DAS. It is also the preferred approach if additional backbone
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cabling is to be installed (see 4.3.1.4).
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However, unless another ZinWave Splice Panel is used at the BD/IC (as part of a campus distribution system) the optical
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fibre cable at the BD/IC will require:
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•
the re-termination of the optical fibres using appropriate hi-conn pigtails of Table 3-8;
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•
the replacement of the backbone panel adaptors with their singlemode equivalents.
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WARNING:
Customers may be unwilling to allow partial re-work to be undertaken on a backbone cabling panel if other services are
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already operating though the optical fibre contained within it.
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WARNING:
Installers may be unwilling to accept responsibility for the modifications made to existing cable plant. The opening of
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backbone panels may:
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a)
be difficult due to poor cable dressing practice in the cabinets that puts both the re-work and other cabling at risk;
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b)
determine that inadequate lengths of optical fibre exist in the panels to allow fusion splicing of the ZinWave hi-conn
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pigtails;
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c)
determine that the management practices for the optical fibre within the panels puts other optical fibres at risk.
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Where existing backbone cables are to be used for the distribution of the ZinWave 2700 DAS, the optical fibre in the
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ZinWave TO cables (see Table 3-9), launch cords, hi-conn pigtails and patchcords (see Table 3-8), shall be selected to
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match those of the backbone cable.
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Zinwave TO cable
Optical fibre management
MMF optical fibre cable:
building backbone
Fusion spliced Zinwave hi-conn MMF pigtail
Optical fibre management
Fusion spliced Zinwave hi-conn MMF pigtail
Zinwave Hi-conn MMF cord
Duplex LC - backbone panel
SMF adaptors on panels
ZinWave
Termination Panel
Backbone
Termination Panel
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Figure 4-7: Re-use of existing multimode optical fibre backbone cabling at an FD/HC via patching
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