User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 2: Description
Page 2-26
 2005, ADC Telecommunications, Inc.
The BIM is designed to support the desired interface to the wireless service provider BTS. The
BIM can support all duplex or simplex configurations. The standard BIM input power level is
low power; -10 to +26 dBm composite. A high power option can be ordered to support a BTS
feed 42 to 47 dBm composite per connection. Dual receive and transmit diversity is also
provided in the BIM.
There are three typically configurations for the BIM Module. Refer to the figure specified for a
diagram of each configuration.
1. BIM Basic – Two cable duplexed interface (see Figure 2-24).
2. Direct Cable – Forward path bypasses, reverse path still used (see Figure 2-25).
3. Transmit Diversity – Keep Tx0/Tx1 separated (see Figure 2-26).
Table 2-18 shows how to connect a BIM for all possible RF connections. One BIM is required
per tenant sector.
BTS
Sector
20 dB
High Power
Attenuator
(50 watts max)
Tx/RxP
WSP Equipment
BIM
FBHDC
HUC
20 dB
High Power
Attenuator
(50 watts max)
Tx/RxD
CXD Hub Equipment
FSC
Tx0/Rxo
Tx1/Rx1
Transmit
Fwd1P
TX1
IF1
CH1
Receive
Pri
Receive
Div
Pri Out
Div Out
DIF Output (x8)
DIF Input Pri
DIF Input Div
Transmit
Fwd1D
Test
BTS
Sector
20 dB
High Power
Attenuator
(50 watts max)
Tx/RxP
WSP Equipment
BIM
FBHDC
HUC
20 dB
High Power
Attenuator
(50 watts max)
Tx/RxD
CXD Hub Equipment
FSC
Tx0/Rxo
Tx1/Rx1
Transmit
Fwd1P
TX1
IF1
CH1
Receive
Pri
Receive
Div
Pri Out
Div Out
DIF Output (x8)
DIF Input Pri
DIF Input Div
Transmit
Fwd1D
Test
Figure 2-24. BIM Basic Configuration