User's Manual

Table Of Contents
3 Detailed Description
APCD-LM043-4.0 15
Transmission line
Antenna
Ethernet switch
Each of the above components is discussed in the following sections.
CCU
The CCU, shown in Figure 7, is the wireless access point for up to 300 end-user modems. The
functional blocks of the CCU are illustrated in Figure 8.
Figure 7 CCU
Figure 8 CCU Functional Blocks
Baseband
Controller
Radio
Baseband
Processor
Power
Amplifier/
Low-noise
Amplifier
Up/Down
Converter
Media
Access
Controller
Ethernet Port
10 BaseT
Console Port
DB9, RS232
CCU3000
Antenna
7.5 VDC
Radio
Power
Baseband