User's Manual

Acceptance Tests

JAN 2002

7-67

SC300 1X BTS Hardware Installation, ATP, and FRU Procedures

DRAFT

Overview

This chapter describes the various TX and RX acceptance tests.

TX Test Objective

The following tests will verify the TX antenna path. Output power

control will also be verified. All tests will be performed using the power

meter and communication test set. Measurements will be via the

Antenna B connectors.

You must remove the antenna cables before you perform

the ATP.

NOTE

The BTS is keyed up to generate a CDMA carrier at 31 dBm.

TX Tests

The following TX tests will be performed to verify the CDMA Forward

Link.

Near band & in band spurious emissions and occupied

bandwidth

You will verify that the transmitted CDMA carrier waveform generated

meets the Spurious Emissions specification (transmit spectral mask and

Occupied Bandwidth as defined in IS95A/B) with respect to either a

pre–determined test pattern or test pattern generated by using assigned

cdf file values.

– +/– 750 kHz from center frequency to +/– 1980 kHz from center

frequency – at least –45 dBc

– +/– 1980 kHz from center frequency and out – at least –60 dBc

– all near band and out of band spurious emissions are verified to be

less than or equal to –60 dBc relative to reference power (measured

previously as total power).

Waveform quality (Rho) and pilot time tolerance (offset)

You will verify that the transmitted Pilot channel waveform quality (rho)

exceeds the minimum specified value in ARIB STD T53. Rho

represents the correlation between actual and perfect CDMA modulation

spectrum. 1.0000 represents 100% (or perfect correlation).

– Waveform quality (Rho) should be > 0.912 (–0.4 dB)

The Pilot Time Tolerance (Offset) is the difference between the CDMA

analyzer measurement interval (based on the BTS system time reference)

and the incoming block of transmitted data from the BTS (Pilot only,

Walsh code 0).

– Pilot Time Tolerance (Offset) should be < 10 uS

. (< 3 uS typical).