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4 Operation

AT&T SLW2500 Installation and Operation Manual

SLW25-RPLR Return-Path Laser Receiver

The SLW25-RPLR is a return-path optical receiver used in the SLW2500 node platform. It is

used in conjunction with a Motorola AM-Blazer, AM-OMNI-LM*, AM-OMNI-ALM, MegaStar, or

other similar optical transmitter.

Figure 5-3 illustrates the SLW25-RPLR:

Figure 5-3

SLW25-RPLR

OPTI CAL

POWER

HYBRID

CURRENT

(1 V/A)

OPT ICAL

POWER

(1 V/mW)

Opt i cal Recei ve r

ASSEMBLED

IN MEX ICO

SLW25-RPLR

Tables 5-4 and 5-5 provide additional information on the user-related features and output levels

of the SLW25-RPLR:

Table 5-4

SLW25-RPLR 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.

Receiver enable A green LED that provides visual indication of the receiver’s enable status.

Fault indicator A red LED that illuminates when the module is enabled but the hybrid current

is outside the normal operating range.

Optical power status A green LED that is ON when the optical power is within the recommended

operating range (refer to Table A-4). Two red LEDs indicate that the optical

power is above (

HIGH) or below (LOW) the recommended optical input power

range.

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Motorola SG 2000 Betriebsanleitung Seite 40