ZINWAVE 2700
DISTRIBUTED ANTENNA SYSTEM
-
INSTALLATION AND TECHNICAL MANUAL
ZINWAVE 2700 DAS - INSTALLATION AND TECHNICAL MANUAL
Page 29
splices the maximum channel insertion is not exceeded at the channel lengths up to 830 metres. It is unlikely that an
713
internal cabling channel would ever exceed this number of connections and splices.
714
715
A reduction in the number of connections and splices would increase the maximum channel lengths to 2000 metres. It is
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also probable that a channel of such a length would, for reason of installation practice, begin to use external grade
717
cables and the maximum channel length supported by the ZinWave 2700 DAS (2000 metres) would be reached before
718
the maximum channel insertion loss of Table 2-1 is attained.
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If the number of connections and splices changes the typical supported channel lengths are shown in Table 4-6.
721
722
723
Equipment Room
ZinWave
TO Closure
ZinWave
Panel
Backbone
Panel
Backbone
Panel
TO
FD/HC
BD/IC
SMF @ 1.0 dB/km max.
1500 m = 1.50 dB max.
Statistical addition:
4 connections = 2.20 dB max
3 splices = 0.3 dB max
Total = 4.00 dB
SMF @ 1.0 dB/km max.
740 m = 0.74 dB max.
Statistical addition:
6 connections = 2.76 dB max
5 splices = 0.5 dB max
Total = 4.00 dB
ZinWave
TO Closure
ZinWave
Panel
Backbone
Panel
Backbone
Panel
TO
FD/HC
BD/IC
ZinWave
Panel
ZinWave
Panel
Equipment Room
ZinWave
TO Closure
Splice
Panel
Backbone
Panel
TO
FD/HC
BD/IC
SMF @ 1.0 dB/km max.
1400 m = 1.40 dB max.
Statistical addition:
4 connections = 2.20 dB max
4 splices = 0.4 dB max
Total = 4.00 dB
ZinWave
Panel
ZinWave
Panel
ZinWave
AU
ZinWave
AU
ZinWave
AU
ZinWave
HU
ZinWave
HU
ZinWave
HU
724
Figure 4-11: ZinWave 2700 DAS channels over internal singlemode optical fibre cabling
725
726
Table 4-6: Internal singlemode optical fibre channel length for multiple connections and fusion splices
727
Typical channel length (metres)
Number of connections in channel
2
3
4
5
6
7
8
3
1890
1500
1200
940
690
450
4
1790
1400
1100
840
590
350
5
1690
1300
1000
740
490
250
6
2000
1590
1200
900
640
390
150
N
o
.
o
f
s
p
li
c
e
s
i
n
c
h
a
n
n
e
l
7
1960
1490
1100
800
540
290
50
728
729
Figure 4-12 shows typical configurations for ZinWave 2700 DAS channels using combinations of internal and external
730
singlemode optical fibre cables to the specifications quoted in Table 4-3. In Figure 4-12 it is assumed that the length of
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the channel inside a building is 400 metres. Figure 4-12 shows that for channels containing up to six connections and
732
five splices the maximum channel insertion is not exceeded at the channel lengths up to 1280 metres.
733
734
Once again the use of splice panels to reduce the number of connections and splices would increase the maximum
735
channel lengths to the maximum channel length supported by the ZinWave 2700 DAS (2000 metres) before the
736
maximum channel insertion loss of Table 2-1 is attained.
737
738