User Manual

ADCP-75-192 • Issue 1 • December 2005 • Section 2: Description
Page 2-25
 2005, ADC Telecommunications, Inc.
6.7 BTS Interface Module (BIM)
The Base Station Interface Module provides the following BTS interface functionality:
• Interface to a low power forward BTS RF path.
• Handles duplexed and non-duplexed signals.
• Forward path gain adjustment.
• Reverse path gain adjustment.
The BIM, shown in Figure 2-23, is a 1RU module that mounts into the HUB Base Rack. There
are four (4) BIM types depending on the frequency band to be supported: Cellular, SMR A,
SMR B, or PCS. The references for the BIM front panel are shown in Table 2-17.
(1) BAS E S TATION
DUP LEXED RF
CONNECTORS
(3) RECEIVE P RIMARY AND
DIVERS ITY RF
CONNECTORS
(2) TRANS MIT S IMPLEXED
RF CONNECTORS
(5) LED BAND
INTERFACE
INDICATORS
(6) FAULT
(4) P OWER
Figure 2-23. BTS Interface Module
Table 2-17. BIM Front Panel User Interface
REF
No.
USER INTERFACE
DESIGNATION
DEVICE FUNCTIONAL DESCRIPTION
1 Base Station RF
Connectors
Four SMA
connectors
Tx0/Rx0 & Tx1/Rx1 duplexed connections
Rx0/Rx1 used for non-duplexed
2 Transmit Forward
Path RF Connectors
Four SMA
connectors
Forward path connections to FBHDC
Fwd1P/Fwd2P – Summed Tx0/Tx1
Fwd1D/Fwd2D – Separated Tx0/Tx1
3 LED Indicators Red LED
Green LED
Yellow LED
Yellow LED
Yellow LED
Fault– Lighted when module fault
Power– Lighted when power present
PCS– BIM supports the PCS band
Cell– BIM supports Cell band
SMR– BIM Supports SMR band
4 Receive Reverse path
RF Connectors
Two SMA
connectors
Connect to HUC module. Primary and
diversity connections