Installation Instructions

Acceptance Tests
PRELIMINARY
SCt300 BTS Hardware Installation, ATP and FRU Procedures
DEC 2000
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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 A (Picocell) and Antenna B (Microcell) 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 for
MicroCell and 17 dBm for PicoCell.
TX Tests to be Performed
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 ARIB STD–T53) 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)
CDMA carrier frequency verification
You will verify the frequency of the transmitted CDMA carrier signal to
be within 0.05 ppm.
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