User Manual

ADCP-75-126 • Issue B • April 2002 • Section 2: Description
Page 2-23
© 2002, ADC Telecommunications, Inc.
RF Forward Path - 1900 MHz
System bandwidth
20 MHz AD band, 25 MHz
DBE,BEF, and EFC bands
Frequency range
AD
DBE
BEF
EFC
1930 to 1950 MHz
1945 to 1970 MHz
1950 to 1975 MHz
1965 to 1990 MHz
Out-of-band emissions
Primary
Secondary (see Note 1)
–13 dBm per 1 MHz bandwidth
from 10 kHz to 20 GHz
–98 dBm per 100 kHz from 824
to 849 MHz and from 1850 to
1910 MHz
Gain of forward path
(Host input to Remote primary
antenna port)
83.5 dB at band center, room
temperature, and 0 dB attenua-
tion setting
Includes power amplifier.
Gain flatness
Band flatness
Channel flatness
±1.5 dB across freq. range
±1 dB variation across any 1.25
MHz channel
Gain variation ± 3 dB over temp and unit-to-
unit
Out-of-band rejection –40 dB at >
±17.5 MHz from
881.5 MHz
Propagation delay 2.2 µs Excludes fiber delay
Configurable propagation delay
Range
Step size
Up to 63 µs
1µs ± 100 ns
Plus standard propagation delay
Spurious
In-band self generated
Free dynamic range
–13 dBm at remote output
60 dB at 30 kHz bandwidth
Transmit peak-to-average 10 dB
Two-tone Intermodulation –55 dBc at remote output Two tones at 5 Watts each
CDMA Intermodulation
885 kHz to 1.25 MHz
1.25 to 1.98 MHz
1.98 to 2.25 MHz
–45 dBc per 30 kHz
–8 dBm per 30 kHz
–55 dBc per 30 kHz
Absolute level
Nominal composite RF input
signal level
–40 dBm at 0 dB attenuation
–10 dBm at max. attenuation
An input signal level of –40 dBm
provides maximum output power
Configurable input level
Range
Step size
30 dB
1 ± 0.5 dB ±10% of attenuation
monotonic
Table 2-5. 1900 MHz System Nominal Specifications, continued
PARAMETER SPECIFICATION REMARKS