Maintenance Guide

Cobham Wireless
idDAS Installation and Maintenance Guide 00109GU Rev. 2.0
Page | 4
1.3 Elements Interfaces and Power Feed
This section describes the interfaces and power feed of the A-POI, MTDI, MSDH, and idRU.
A-POI Description 1.3.1
The A-POI (Active Point of Interface) conditions and controls the level of up to 16 low power BTS sectors via
band dedicated conditioning modules. All A-POI modules and interfaces are located on the front panel. The
power connections for both AC and DC models are located on the rear panel.
NOTE: A-POI RF modules support a maximum power of 30dBm. Low PIM attenuation is required for BTS
signals whose power level exceeds 30dBm.
1.3.1.1 APOI Modules
As illustrated in Figure 1-3, the APOI front panel supports the following modules: BTS Interface (BTSI)
modules, a Control module and a Display and Switch module. The modules are described in Table 1-1.
Figure 1-3. APOI Modules
Each BTSI module supports two channels with dedicated BTS and MTDI interfaces as illustrated below.
Figure 1-4. BTSI Interfaces per Channel
8 BTSI-modules
Display and
Switch Module
Control
Module