User Manual

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Through spectrum, you need to check signals sent from BTS TX. If the signals exceed
input range (-20dBm~+10dBm), you can connect an attenuator ahead of the input port
to put the signals in the input range.
BIU interface with Bi-Directional Amplifier
Basically, BIU is in Simplexer type; when you use BDA, you need to separate BDA
signals from TX and RX type.
Using a duplexer or a circulator, you can separate TX/RX signals of an external device
from each other.
Figure 5.2 – 800PS BDA Interface using Circulator