User's Manual Part 1

BTS Equipment Identification

PRELIMINARY

1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU

MAY 2004

1-20

Overview

Stand–Alone BTS

The 1X SC480 BTS consists of one shelf of cards and modules within a

metal cabinet. Depending on configuration the BTS may be powered by:

S Converted AC to –48 VDC

S Converted AC to +27 VDC

S Battery (–48 or +27 VDC)

S +27 VDC

S –48 VDC

The BTS can support up to two carriers in a non–redundant omni

configuration.

Figure 1-4 shows the two different front vies and Figure 1-5 shows the

rear view of the BTS.

Exapnsion BTS

When more than two carriers are desired, up to 3 additional BTSes may

be added. Up to 8 carriers can be supported in this configuration. The

Starter BTS has the Compact Multi–Preselector Card (cMPC) and the

expansion BTSes contain Expansion Compact Multi–Preselector Cards

(EMPC) in place of the cMPC. In expansion the BTSes are identified as

individual BTSes, (i.e.; BTS–100, BTS–200, BTS–300, BTS–400).

LAN connections are not used. The BTSes will share TX and RX

antennas. Reference Appendix E for interconnect diagrams.

Logical BTS

The BTS software implements the logical BTS capability. Previously, all

BTS frames co–located at a single site had to be identified in the

network with separate and distinct BTS ID numbers. In the Logical BTS

feature, all BTSes located at a single BTS site are identified with unique

Frame ID numbers (Frame ID Numbers 1, 101, 201, 301) under a single

(site) BTS ID number. A logical BTS can consist of up to three BTSes

(up to 8 carriers). When the LMF is connected to the Starter of a logical

BTS, you can access all devices in all of the BTSes that make up the

logical BTS. A logical BTS requires a CDF/NECF file that includes

equipage information for all of the logical BTSes and their devices and a

CBSC file that includes channel data for all of the logical BTSes.

In this configuration LAN connections are used. The Starter BTS has the

Compact Multi–Preselector Card (cMPC) and the expansion BTSes

contain Expansion Compact Multi–Preselector Cards (EMPC) in place

of the cMPC. The BTSes will share TX and RX antennas. Reference

Appendix F for interconnect diagrams.