Motorola SG 2000 Istruzioni per gli Interventi Scaricare il pdf (Pagina 47)

Specifications A

A-

-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

3 dBm

Optical input return loss 40 dB minimum

RF passband 5 MHz through 300 MHz

Gain at 40 MHz

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

Absolute maximum optical input power that can be applied to the optical input connector.

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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Motorola SG 2000 Istruzioni per gli Interventi Pagina 47