Product Description Part 2

RBS 2207
7.5 Power Consum ption
The power consumption figures in the table be low show peak load. The figures
in the table hav e been rounded off.
Table 15 Power consumption
Power Supply VoltageRBS 2207
Cabinet (fully
equippe d)
120 -250 V AC +24 V DC -48 V DC
Maximum
power
consum ption
1.7/2.9
(1)
kW 1.4 kW 1.7 kW
(1) Power consumption during maximum battery cha rging
8 Transmission
The RBS 2207 is nor mally connected to a Distribu tion Frame (DF) that
serves as an interface for the transmission (PCM) lines. Two PCM c ables
are connect ed to the ports on the connection field of the RBS. The RBS 2207
supports two transmission standards :
• T1 1.5 Mbit/s, 100
balanced PCM line
• E1 2 Mbit/s, 75
unbalanced (Transmission Adapter used), or 120
balanced line
Link access procedures on C-channel (LAPD) concentration and LAPD
multiplexing can be used t o make the transmission resource more efficient.
PCM Overvoltage Module
This module is mounted in the DF and contains overvoltage protection for the
PCM lines. If the PCM lines are terminated in equipment outside the RBS
equipment room, these l ines mus t then be protected by overvoltage protectors
(OVP) in th e DF. Failure to do so might damage the DXU-21, if a voltage
transient is transported along the cable. The RBS 2 207 is designed fo r 100/120
balanced (twisted pair) cable. W hen a 75 unbalanced (coaxial) cable is to
be connected , the m odule contains a balun c ard that converts 75
unbalanced
to 100/120
balanced line.
Optional Transmission E quipment
The cabinet can be connected to optional transmission equipment that is
mounted externally. The o ptional transmission eq uipment used is :
• Tran smission adapter to connect 75
unbalanced line directly to the RBS
21 (24)
EN/LZT 720 0134 Uen R3A