User's Manual

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Figure 5.3 – 800PS BDA Interface using Duplexer
BIU interfaces with BDA in either of the methods above. In this case, you need to
check TX input range as well.
Given the TX input range (-20dBm~+10dBm/Total per port), make sure to see if the
value is in the input range, using Spectrum Analyzer, when you connect input ports.
5.1.4 MDBU insertion
MDBU is designed to let a MDBU inserted into any slot.
BIU can be equipped with a total of four MDBUs. If only one MDBU is inserted into a
slot with the other slots reserved, you need to insert BLANK cards into the other slots.
If you do not terminate input and output ports of MCDU, which combines TX signals and
divides RX signals, it will cause loss and generation of spurious signals at the other party's band.
Given this, make sure to insert MDBU BLANK into slots of MDBU.
When MDBU is inserted into BIU, LED at the front panel will show the following information: