Ericsson MINI-LINK E, Техническое описание

Страница: 151 / 190

MINI-LINK E and E Micro
Unbalanced Traffic
75 coaxial cable TZC 750 24. Below you find the cable attenuation and
maximum cable length according to ITU-T Rec G.703 for the different traffic
rates.
Table 40 Attenuation and maximum cable length for unbalanced traffic cable
Traffic rate [Mbit/s] Attenuation [dB/km] Maximum cable length [m]
2 23 260
8 45 130
34
92 130
8.5.2 MINI-LINK E Micro
In this section: L = cable length [m], U = voltage supply [V]. Maximum traffic
cable attenuation is 2.5 dB / 100 m. Maximum radio cable attenuation is 2 dB /
100 m, RCB loss is 0.5 dB, RBS loss is 0.5 dB. Maxite includes an RBS 2302,
an active antenna and a power and battery cabinet (PBC). The PBC can supply
up to three MINI-LINK E Micro radios with power by using an RCB.
8.5.2.1 MINI-LINK E Micro with DC and Traffic Cables
Table 41 DC cable
Outer cable
diameter [mm]
Weight [kg/100 m] Maximum cable
length [m]
Minimum bending
radius [mm]
7.2 8.6 L = 27 x (U – 20) 90
Example 1: If Maxite is used, U = 41.3 V and L = 575 m.
Example 2: For U
min
= 20.4 V, L is 10 m.
Table 42 Traffic cable
Outer cable
diameter [mm]
Weight [kg/100 m] Maximum cable
length [m]
Minimum bending
radius [mm]
7.2 6.7 See Example 3 90
Example 3: 30 dB attenuation at the radio is allowed according to Section
8.6.2.1 on page 150. Maxite, including four cascaded RBSs, gives the following
equation: (2.5 x L / 100 + 4 x 0.5) ≤ 30 , which means that the total traffic cable
length (from radio to last RBS) is 1 100 m.
145
AE/LZT 110 2012 R8C 2002-03-04