Installation Instructions

Low -to -Mid Capacit y Fr ame Expansion Ov erview Chapter 3: Low -to -Mid Capacit y Fr ame Expansion Procedures

Low -to -Mid Capacity Frame Expansion Overview

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The R20 UBS Macro BTS supports single band 800 MHz or 1.9 GHz RF band, up to

two XMIs, up to two DMIs and one S SI. UBS Macro BTS Frame conﬁgurations with

up to four XMIs and up to ﬁve DMIs will be available in the future.

This chapter provides information and procedures needed for expanding the low -capacity UBS

Macro BTS starter/expansion frame to the mid -capacity frame conﬁguration.

The mid -capacity frame consists of the low -capacity frame equipment plus the following

additional expansion equipment:

• second XMI, required.

• second DMI, required.

• circuit breaker/output power connector assemblies; one required for each of the following:

second XMI and second DMI.

• second set of IDRFs, required.

• optional RX splitter or RX share cable.

• third PSM, required for –48 V or 220 V AC only . Three PSMs are required for the mid

capacity conﬁguration. The third PSM is for redundancy .

Cabling of the RX splitter to the XMIs will be performed after all of the additional expansion

equipment (i.e., XMI, DMI, S SI, circuit breaker/output power connector assemblies, etc.) is

installed in the frame.

How to use this chapter

Typically the installer is directed to this chapter via T ask 6: Expanding the Low -capacity Frame

on page 2 - 42 of Chapter 2 UBS Macro BTS Installation Procedure .

P erform all of the applicable procedures, in this chapter , for expanding the low -capacity UBS

Macro BTS starter/expansion frame to the mid -capacity frame conﬁguration.

A fter all of the additional expansion equipment is installed, go to T ask 7: Cabling the Optional

PSM Shelf on page 2 - 43 of Chapter 2 UBS Macro BTS Installation Procedure , and continue

performing the remaining tasks in sequential order .

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PRELIMINARY A UG 2007