Operation Manual

Nokia MetroSite GSM Base Station, Requirements for Installation and Operation
32 (38) © Nokia Networks Oy Internal Copy DN9913471
Issue 1 en DRAFT 2 Draft
4.1 Cable entry block
The size of the cable entry holes must be considered when planning the cabling
of the Nokia MetroSite GSM BTS. The cable entry block is made of elastic
material. The holes can accommodate varying cable diameters as shown in Figure
8.
Table 8. Transmission connectors of Nokia MetroSite BTS
Transmission
unit type
Number of
connectors
Connector type Cable
FC RRI 1 TNC 50 Ω Flexbus RG-223 (max
length 140 m),
Flexbus RG- 214 (max.
length 300 m)
For more information,
refer to
Nokia MetroSite
GSM Base Station:
Product Description
.
FC E1/T1 3 Two coaxial BT43
connectors (75 Ω)
one balanced TQ
connector (100/120
Ω)
Coaxial for 75 Ω
connector
twisted pair for 100/120 Ω
connector.
Max. allowed attenuation
for E1 20 dB; for T1 26 dB
FXC RRI 2 TNC 50 Ω Coaxial Flexbus RG-223
(max. length 140 m),
coaxial Flexbus RG-214
(max. length 300 m).
For more information,
refer to
Nokia MetroSite
GSM Base Station:
Product Description
.
FXC E1 75 Ω 8 Coaxial BT43
connectors
Coaxial
Max. allowed attenuation
20 dB
FXC E1/T1 120/
100 Ω version
4 Balanced TQ
connectors
Twisted pair
Max. allowed attenuation
for E1 20 dB, for T1 26 dB