User Manual

ADCP-75-136 • Issue 1 • November 2002
Page 14
© 2002, ADC Telecommunications, Inc.
Table 5. System Specifications
PARAMETER SPECIFICATION REMARKS
Optical – All Units
Fiber type Multi-mode: 50 or 62.5 micron core
Single-mode: 9 micron core
Two fibers per transport link
Maximum fiber length
for guaranteed
performance
500 m (1,641 ft)
750 m (2461 ft)
10 km (32,808 ft)
With 62.5 micron core MM fiber
With 50 micron core MM fiber
With 9 micron core SM fiber
Optical output power –10 to –3 dBm
Optical wavelength 850 nm for multi-mode use
1310 nm for single-mode use
Environmental
Operating temperature 0º to 50º C (32º to 122º F)
Storage temperature –30º to +70º C (–22 to 158º F)
Humidity No condensation
Weather resistance NEMA type 2, IEC 529 IP30 Indoor installation only
RF Forward Path
System bandwidth 18 MHz
Frequency range 851 to 869 MHz
Output power > +13 dBm Maximum composite power
Gain +33 dB nominal At room temperature
Gain variation < 6 dB
< 1.5 dB variation per 1.25 MHz
CDMA channel
Over frequency, temperature, and
unit to unit. May have up to 2 dB
variation at upper band edge.
OIP3 +35 dBm typical At max. composite output power
CDMA ACPR1 < –45 dBc
Spurious Output < –30 dBm
DHU RF input signal
level
–20 dBm maximum composite Provides maximum output power
level at the DRU
RF Reverse Path
System bandwidth 18 MHz
Frequency range 806 to 824 MHz
Gain +10 dB nominal
Gain Variation < 6 dB
< 1.5 dB variation per 1.25 MHz
CDMA channel
Over frequency, temperature, and
unit to unit.
Automatic Gain Limiting Enabled for composite RF input
>
–40 dBm
Prevents A/D saturation with large
inputs.
Noise Figure < 9 dB + 10 log N where N = # of
remotes
< 9 dB typical. See Note at end of
table.
DHU RF output signal
level
–30 dBm maximum With a –40 dBm composite
maximum input signal at the DRU
(continued)