User's Manual Part 1

CDMA 1.9 GHz Operating Frequency Programming Information

1-8 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU Jun 2004

DRAFT

Introduction

Programming of each of the BTS BBX synthesizers is performed by the

BTS GLI cards over the Concentration Highway Interface (CHI) bus.

This programming data determines the transmit and receive operating

frequencies (channels) for each BBX.

1900 MHz PCS Channels

Figure 1-2 shows the valid channels for the North American PCS

1900 MHz frequency spectrum. There are 10 CDMA wireline or

non–wireline band channels used in a CDMA system (unique per

customer operating system).

ÉÉÉ

FREQ (MHz)

RX TX

275

1175

CHANNEL

1863.75

925

1851.2525

1871.25425

675 1883.75

1896.25

1908.75

1943.75

1931.25

1951.25

1963.75

1976.25

1988.75

FW00463

Figure 1-2: North America PCS Frequency Spectrum (CDMA Allocation)