Overview; About This Manual; Product Description - Prevail-Catv WT-1550-EM10 Operating Manual

1550nm external modulated optical transmitter

Table of Contents

1. Overview

This instruction manual is a complete guide to install and operate the (1RU)

WT-1550-EM10 series 1550nm external modulated optical transmitter. Please read

the entire manual before beginning installation.

This manual applies to WT-1550-EM10 series external modulated optical

transmitter.

• Chapter 1 gives general information about the WT-1550-EM10 series 1550nm

external modulated optical transmitter.

• Chapter 2 describes the complete technical specifications of WT-1550-EM10.

• Chapter 3 describes the front/rear panel interfaces and menu system.

• Chapter 4 tells you how to install WT-1550-EM10 series external modulated optical

transmitter.

• Chapter 5 tells you the communication setting of WT-1550-EM10.

• Chapter 6 describes maintenance and what to do in the event of problems.

WT-1550-EM10 series optical transmitter is 1550nm external modulated single

output optical transmitter. It is specially developed for the CATV signal that satisfies

HFC network, and the medium/short distance transmission of cable phone and cable

data.

Working principle

WT-1550-EM10 series transmitter has 7 function modules: RF control, DFB laser,

optical modulator, SBS control, CSO control, communication/display control and

power supply.

Automatic gain control circuit (AGC) or manual gain control circuit (MGC)

amplifies the RF signal. AGC or MGC control makes the optical modulator maintain a

suitable input level. Use the detected RF root-meansquare(RMS)-total power to

calculate the optical modulation index(OMI).

In general we recommend using the AGC function, and special users can use the

MGC function to adjust the CNR/CSO/CTB performance indexes.

The core of transmitter is the optical modulator. The 1550nm signal input the

optical modulator, make the laser intensity changed follow the external RF signal

voltage, and then generate the AM optical signal.

WT-1550-EM10 1550nm external modulated optical transmitter operating manual

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Table of Contents