User's Manual Part 2

RBS 2308 and RBS 2309 User’s Guide
P010439A
Far End
150m
0,03 dB/m
RBS 1
A C B D
Figure 54 Example of Receiver Sensitivity Parameter Calculation for E1,
120 Ω
In this example, Far End and the RBS refer to
the figure above.
The cable length between the RBS and the Far End is 150 m.
The cable attenuation for the cable between the RBS and
the Far End is 0.03 dB/m.
1. Calculate the cable attenuation between the Far End and
the RBS:
150 m × 0.03 dB/m = 4.5 dB
2. Set Receiver Sensitivity A for the RBS to “Short haul”.
3. Set Receiver Sensitivity B, C, and D for the RBS to
“Short haul” (not connected).
Example 5 Calculating Receiver Sensitivity Parameters for Transmission
Interface E1, 120 Ω
Transmission Interface T1, 100 
This section describes how to define parameters for transmission interface T1.
When using the cable length for calculations in the following sections, the cable
used must be the reference cable (multipair 22 AWG office cable) or similar.
1. Find the transmission interface type in the Site Installation Documentation,
and use the table below to find the applicable section with instructions
for setting the parameters.
128
EN/LZT 720 0027 Uen R8A 2006-06-27