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Ctav 1GHz Intelligent Direct Modulatedoptical Transmitter

China Ctav 1GHz Intelligent Direct Modulatedoptical Transmitter, Find details about China 1550nm Optical Transmitter, 1550nm Transmitter from Ctav 1GHz Intelligent Direct Modulatedoptical Transmitter

Model NO.
WT1550DM
Origin
China
Model NO.
WT1550DM
Origin
China

1. Overview

1.1 About This Manual

This instruction manual is a complete guide to install and operate the (1RU) WT-1550-DM optical transmitter. Please read the entire manual before beginning installation.
This manual applies to WT-1550-DM optical transmitter.
• Chapter 1 gives general information about the WT-1550-DM optical transmitter.
• Chapter 2 describes the complete technical specifications of WT-1550-DM.
• Chapter 3 describes the front/rear panel interfaces and menu system.
• Chapter 4 tells you how to install WT-1550-DM optical transmitter.
• Chapter 5 tells you the communication setting of WT-1550-DM.
• Chapter 6 describes maintenance and what to do in the event of problems.

1.2 Product Description

WT-1550-DM intelligent directly modulated optical transmitter is mainly used in 1550nm optical fiber transmission system. Adopt advanced electronic dispersion compensation technology, accurately compensate according to the actual transmission distance by 1km stepping. The maximum compensated distance up to 50km.
WT-1550-DM intelligent directly modulated optical transmitter is the most important equipment to construct the CATV network. It mainly used for the value-added services of TV image signal, digital television signal, telephone voice signal and data (or compressed data) signal. By built-in WDM, multiplex the inter-cut optical signal and the main optical signal then output. After setting required optical difference, the perfect adjustable optical attenuation function can automatic control the inserted optical signal according to the main optical signal, realize inter-cut system full automatic adjustment. Provide high quality low cost solution for all-optical relay 1550 optical fiber CATV system, and local value-added services inter-cut.

Characteristics:
  1. Patent pre-distortion circuit.
  2. The optical fiber distance is adjustable according to the actual use condition by 1km stepping.
  3. WT-1550-DMII: Built-in WDM, multiplex the inserted optical signal and the main optical signal then output.
  4. WT-1550-DM III: Built-in WDM and adjustable attenuator.

Model Selection:
WT-1550-DM-I: standard 1550nm directly modulated optical transmitter, the default optical output power is 10mW, and the optical output wavelength can choose ITU standard wavelength.
WT-1550-DM-II: on the base of WT-1550-DM-I, add inter-cut function and built-in WDM. The WDM specification please specify when ordering.
WT-1550-DM-III: on the base of WT-1550-DM-II, add VOA Variable Optical Attenuator, can adjust the signal optical power intensity by the menu options on the front panel.

1.3 Product Applications

• 1550nm Optical fiber transmission system
• Construct the CATV network
• Local value-added services inter-cut

2. Technique Parameters

ItemUnitTechnique Parameters
Output optical powermW10*
Optical wavelengthnm 1550±10 (have to be ITU wavelength when with inter-cut function)
Dispersion compensation distanceKm≤50
Laser type DFB laser
Optical modulation mode Direct optical intensity modulation
Optical connector type FC/APC or SC/APC
Frequency rangeMHz47-862/1003
RF input leveldBμV75-85
Flatness in banddB±0.75
RF input impedanceΩ75
Input return lossdB≥ 16
AGC control rangedB±5
MGC control rangedB0-20
Supply voltageVAC 110V-250V (50Hz)
ConsumptionW30
Operating temperatureºC0 -- 45
Storage temperatureºC-20 -- +65
Relative humidity%Max 95% no condensation
Dimensionmm483(L)×380(W)×44(H)
Special instructions: The performance parameters of this manual according to the measuring method of GY/T 143-2000 <Specifications and methods of measurement on AM optical transmitter and receiver used in CATV systems>, and tested under the specified test conditions.
* The output optical power doesn't involve optical ATT and WDM insertion loss. Optical ATT+WDM insertion loss≤ 1.5dB,optical ATT or WDM insertion loss ≤ 1dB.

Test Indicators

Test ModelC42D59D84
ChannelCENELEC42PAL D59PAL D84
C/N504947.5
CSO606058
CTB656565
25km optical fiber, -1dBm receiving optical power, 80dBμV input

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Ctav 1GHz Intelligent Direct Modulatedoptical Transmitter
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Ctav 1GHz Intelligent Direct Modulatedoptical Transmitter
 

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