User's Manual

ADCP-75-198 • Issue 1 • October 2005
Page 18
© 2005, ADC Telecommunications, Inc.
Configurable RF Output
Range
Step size
31 dB at remote unit
1 ±0.5 dB ±10% of attenuation
monotonic
Transmit path insertion loss 2.5 dB
RF Reverse Path - 1900 MHz
System Bandwidth 20 MHz AD band, 25 MHz
DBE, BEF, and EFC bands
Frequency range
AD
DBE
BEF
EFC
1850 to 1870 MHz
1865 to 1890 MHz
1870 to 1895 MHz
1885 to 1910 MHz
In band spurs (caused by an indi-
vidual out-of-band signal)
–75 dBc (1 MHz to 20 GHz
and > 10 MHz out-of-band)
–120 dBc (1930 to 1990 MHz)
–120 dBc (869 to 894 MHz) Required for dual band
Propagation delay 6 µs Excludes fiber delay
Configurable propagation delay
Range
Step size
Up to 63 µs
0.1µs ±1 100 ns
Plus standard propagation delay
Gain flatness
Band flatness
Channel flatness
1.5 dB across frequency range
±1 dB variation across any 1.25
MHz channel
Gain of reverse path
Overall gain
Gain variation
30 ± 2 dB at band center at room
temperature
3 dB over temperature
ALC not invoked
ALC not invoked
Out-of-band rejection –40 dB at >
±17.5 MHz from
center of subband
ALC not invoked
Spurious (in-band self gener-
ated)
–110 dBm referred to input ALC not invoked
Intermodulation –62 dBc two tones at –50 dBm
System noise figure 8 dB at mid-band ALC not invoked
Configurable RF output
Range
Step size
31 dB
1 ± 0.5 dB ± 10% of attenuation
monotonic
Blocking dynamic range 70 dB
Level limiting ALC threshold –40 dBm ± 3 dB instantaneous
Level limiting ALC range 30 dB
Table 4. PCIx Host Card 1900 MHz Specifications, continued
PARAMETER SPECIFICATION REMARKS