Reference Manual

Unit Description, ASU

P008375B

CDU

CXU

Antenna

connection

fields

ASU

Figure 98 ASU location in the RBS 2206

12.1.2 Couplers

The ASU consists of 6 couplers, performing the following functions:

• 200



resistor to ground for cable supervision purposes

• Directional coupler

• Attenuator

• Switch to select between high and low attenuation

• Built-in overvoltage protection

A schematic view of one coupler is shown Figure 99 on page 173.

172 (485)

EN/LZT 720 0008 P2A

2001-11-28

Preliminary