Motorola SG 2000 Betriebsanleitung PDF herunterladen (Seite 37)

AT&T SLW2500 Installation and Operation Manual

Section 5

Operation

This section provides information concerning the use of various options and applications

required by AT&T. It may be helpful to refer to Figures 3-1 and 3-2 that illustrate the major

components in the SLW2500 lid and RF chassis.

SLW2500 Optical Modules

The forward- and return-path optical modules available for the SLW2500 include:

§ SG2-LR — forward path optical receiver

§ SG2-DFBT — isolated DFB return transmitters

§ SLW25-RPLR — return path laser receiver

Designed specifically for use in the SLW2500 node platform, the modules combine high

performance and easy maintenance.

SG2-LR Optical Receiver

The SG2-LR is a line of forward-path optical receivers used in the SLW2500 node platform. It is

designed to be used in conjunction with a Motorola AM-Blazer, AM-OMNI-LM*,

AM-OMNI-ALM, MegaStar, or other similar optical transmitter.

Figure 5-1 illustrates the SG2-LR:

Figure 5-1

SG2-LR

OPTI CAL

POWER

HYBRID

CURRENT

(1 V/A)

OPT ICAL

POWER

(1 V/mW)

SG2000

Opt i cal Recei ve r

ASSEMBLED

IN MEX ICO

SG2-LR

Tables 5-1 and 5-2 provide additional information on the user-related features and output levels

of the SG2-LR:

Table 5-1

SG2-LR features

Feature Description

Optical power test point This test point enables monitoring of the optical power level at the input to the

module. The nominal scale factor is 1.0 V/mW.

Hybrid current test point This test point enables monitoring the current drawn by the amplifier section

of the integrated optical receiver hybrid. The nominal scale factor is 1.0 V/A.

The hybrid current test-point voltage is between 0.150 V and 0.350 V (hybrid

current of 150 mA through 350 mA) when the module is enabled under

normal operating conditions.

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