Motorola SG 2000 Instruções de Operação Página 47

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Specifications A
AA
A-
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3
AT&T SLW2500 Installation and Operation Manual
Table A-5 lists the RF performance specifications for the SLW25-RPLR laser transmitter:
Table A-5
SLW25-RPLR
Parameter Specification
Optical input power range-recommended –4.0 dBm to +2.0 dBm
Optical input power-maximum recommended
1
3 dBm
Optical input return loss 40 dB minimum
RF passband 5 MHz through 300 MHz
Gain at 40 MHz
2
19.5 dB minimum
Flatness 1 dB P-V maximum
Tilt –0.5 dB to +1.0 dB maximum
Equivalent noise input current 8 pA/Hz
1/2
maximum
1
Absolute maximum optical input power that can be applied to the optical input connector.
2
Relative to an ideal photodetector terminated in a 75-ohm impedance.
Table A-6 lists the RF performance specifications for the SG2-DFBT laser transmitter:
Table A-6
SG2-DFBT
Parameter Specification
Nominal RF input impedance 75-ohms
RF passband 5 MHz through 200 MHz
Flatness (peak to valley) 1 dB P-V maximum
RF input return loss 18 dB minimum
Recommended total input power
+15 dBmV
Carrier to noise ratio 9 dB link, 35 MHz BW 41 dB minimum
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