User's Manual Part 1

ADCP-75-187 • Preliminary Issue 1B • November 2005 • Section 2: DESCRIPTION
Page 2-19
© 2005, ADC Telecommunications, Inc.
Table 2-5. SCS 800/900 MHz SMR System Nominal Specifications
PARAMETER SPECIFICATION REMARKS
Optical - Host and Remote Unit
Fiber type 9/125, single-mode
Number of fibers required 1 for single-band remote unit
2 for dual-band RU
All SCS remote units include a
WDM.
Forward path wavelength 1550 nm
Reverse path wavelength 1310 nm
Optical transmit power output
Host Unit
Remote Unit
0 dBm
+1.3 dBm (includes WDM inser-
tion loss)
Optical budget 25 dB
For optical BER of 10
–6
Optical Receiver Input Maximum –15 dBm
Optical connectors UPC/SC Host unit
OptiTap APC/SC Remote unit
RF Forward Path - 800/900 MHz
System bandwidth 18 MHz
5 MHz
800 MHz transmit
900 MHz transmit
Frequency range 851–869 MHz
935–940 MHz
Gain of forward path
(Host input to Remote primary
antenna port)
77.5 dB At band center, room tempera-
ture, and 0 dB attenuation set-
ting. Includes power amplifier.
Gain flatness
Band flatness
Channel flatness
± 2.0 dB across freq. range
± 1.5 dB variation across any
1.25 MHz channel
Gain variation ± 3 dB over temp and unit-to-
unit
Propagation delay < 6 µs (typical) Excludes fiber delay
Configurable propagation delay
Range
Step size
0 to 63 µs
0.1µs ± 100 ns
Plus standard propagation delay
Spurious
In-band self generated
Dynamic range (noise floor)
<–13 dBm at remote output
<–60 dBc at 30 KHz bandwidth
Transmit peak-to-average >
10 dB
Two-tone Intermodulation <
–55 dBc two tones @ 5 Watts each
Nominal composite RF input
signal level
–40 dBm at 0 dB attenuation
–9 dBm at max. attenuation
–20 dBm is the optimal RF input
signal level.
Configurable input level
Range
Step size
31 dB
1 ± 0.5 dB ±10% of attenuation
monotonic