User's Manual Part 2

RBS 2308 and RBS 2309 User’s Guide
Table 44 Long Haul Parameters for Different Carrier-Advised Codes at the
Network Interface
Long Haul Parameters for Diffe
rent Values of the
Carrier-Advised Code at the Ne
twork Interface
Cable
Attenuation
(dB)
A (0 dB) B (-7.5 dB) C (-15 dB) D (-22.5 dB)
0–7.5 0
-7.5
-15 -22.5
7.5 – 15
n/a
0
-7.5
-15
15 – 22.5
n/a n/a
0
-7.5
>22.5
n/a n/a n/a
0
2. If the maximum input signal level is given in the Site Installation
Documentation, use the table below to set the correct LBO A (B, C, D)
parameters.
Table 45 Long Haul Parameters for Different Maximum Input Signal Levels
Long Haul Parameters for Different Values of the Maximum
Input Signal Level at the Far End
Cable
Attenuation
(dB)
0 dB -7.5 dB -15 dB -22.5 dB
0–7.5 0
-7.5
-15 -22.5
7.5–15 0 0
-7.5
-15
15 – 22.5 0 0 0
-7.5
>22.50000
3. If multidrop, set LBO B (D) to “Long h., 0 dB”. Used B (D) ports in m ultidrop
configurations should always be set to “Long h., 0 dB”
4. Set unused ports to “Short h., 0 – 133 feet”. Unused ports should always
be set to “Short h., 0 – 133 feet”.
The following example illustrates what is said above.
P010441A
Network
Interface
Cable
Attenuation = 5 dB
Carrier Advised
Code= -15 dB
RBS 1
A C B D
1
33
EN
/LZT 720 0027 Uen R8A 2006-06-27