Nextra OT1550-DM Manual de usuario

OT1550-DM

Intelligent Direct Modulated

Optical Transmitter Operating Manual

(

)

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 1 -

Table of Contents

Table of Contents ..................................................................................................- 1 -

1. Overview...........................................................................................................- 2 -

1.1 About This Manual ...................................................................................- 2 -

1.2 Product Description ..................................................................................- 2 -

1.3 Product Applications.................................................................................- 4 -

2. Technique Parameters........................................................................................- 4 -

3. Panel Interface and Menu System Description ...................................................- 5 -

3.1 Front Panel ...............................................................................................- 5 -

3.1.1 Indicator Description.......................................................................- 5 -

3.2 Rear Panel ................................................................................................- 6 -

3.3 Power Module ..........................................................................................- 6 -

3.3.1 220V Power Module .......................................................................- 6 -

3.4 Menu Operation........................................................................................- 7 -

3.4.1 Main Menu......................................................................................- 7 -

3.4.2 Display Menu..................................................................................- 8 -

3.4.3 Set Menu.......................................................................................- 10 -

3.4.4 Alarm Menu .................................................................................. - 11 -

4. Installing the OT1550-DM Optical Transmitter ............................................... - 12 -

4.1 Receiving and Inspecting ........................................................................- 12 -

4.2 Precautions .............................................................................................- 12 -

4.3 Mounting OT1550-DM...........................................................................- 12 -

4.3.1 Mounting the OT1550-DM in the Rack .........................................- 12 -

4.3.2 Connecting the RF Cables ............................................................. - 12 -

4.3.3 Connecting the Optical Fiber Cables .............................................- 13 -

4.3.4 Connecting the Ethernet Cable ......................................................- 13 -

4.3.5 Connecting Power ......................................................................... - 13 -

5. Communication Setup .....................................................................................- 14 -

5.1 RS232 Communication Interface Description ......................................... - 14 -

5.2 Set up the Hyper Terminal ...................................................................... - 14 -

5.3 Operating Parameters Configuration .......................................................- 16 -

5.4 Remote Monitoring: SNMP ....................................................................- 19 -

6. Maintenance and Troubleshooting ................................................................... - 20 -

6.1 Cleaning Fiber Optic Connectors ............................................................- 20 -

6.1.1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors............... - 20 -

6.2 Troubleshooting......................................................................................- 21 -

6.3 After-sales Service Description ...............................................................- 21 -

6.4 Disclaimer .............................................................................................. - 21 -

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 2 -

1. Overview

1.1 About This Manual

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

OT1550-DM optical transmitter. Please read the entire manual before beginning

installation.

This manual applies to OT1550-DM optical transmitter.

• Chapter 1 gives general information about the OT1550-DM optical transmitter.

• Chapter 2 describes the complete technical specifications of OT1550-DM.

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

• Chapter 4 tells you how to install OT1550-DM optical transmitter.

• Chapter 5 tells you the communication setting of OT1550-DM.

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

1.2 Product Description

OT1550-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.

OT1550-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.

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 3 -

3. OT1550-DM II: Built-in WDM, multiplex the inserted optical signal and the main

optical signal then output.

4. OT1550-DM III: Built-in WDM and adjustable attenuator.

Model Selection:

OT1550-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.

OT1550-DM-II: on the base of OT1550-DM-I, add inter-cut function and built-in

WDM. The WDM specification please specify when ordering.

OT1550-DM-III: on the base of OT1550-DM-II, add VOA Variable Optical

Attenuator, can adjust the signal optical power intensity by the menu options on the

front panel.

Block Diagram

OT1550-DM directly modulated optical transmitter block diagram

OT1550-DM inter-cut part block diagram

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 4 -

1.3 Product Applications

• 1550nm Optical fiber transmission system

• Construct the CATV network

• Local value-added services inter-cut

2. Technique Parameters

Item Unit Technique Parameters

Output optical power mW 10

Optical wavelength nm 1550±10 (have to be ITU wavelength when

with inter-cut function)

Dispersion compensation

distance Km ≤50

Laser type DFB laser

Optical modulation mode Direct optical intensity modulation

Optical connector type FC/APC or SC/APC

Frequency range MHz 47-862/1003

RF input level dBuV 75-85

Flatness in band dB ±0.75

RF input impedance Ω 75

Input return loss dB ≥ 16

C/CSO dB ≥ 60

C/CTB dB ≥ 65

C/N dB ≥ 51

25Km optical fiber, 0dB

received

AGC control range dB ±5

MGC control range dB 0-20

Supply voltage V AC 110V-250V (50Hz)

Consumption W 30

Operating temperature ℃ 0 -- 45

Storage temperature ℃ -20 -- +65

Relative humidity % Max 95% no condensation

Dimension mm 483（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.

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 5 -

3. Panel Interface and Menu System Description

3.1 Front Panel

Front panel schematic diagram

3.1.1 Indicator Description

Power indicator (POWER) Power on LED green

Running indicator (RUN) Run normally LED flash green

Laser OFF LED red

Laser indicator Laser ON LED green

No output or exceed the normal range LED flash red

RF input indicator (RF) Normal LED green

1 Power indicator 2 Running indicator 3 Laser indicator

4 RF input indicator 5 LCD 6 ESC key

7 UP key 8 DOWN key 9 Enter key

10 RF output test port 11 Laser switch

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 6 -

3.2 Rear Panel

Rear Panel schematic diagram

3.3 Power Module

3.3.1 220V Power Module

1 Mounting screws 2 220V/110V power outlet 3 Fuse

4 Power switch

No. Name Remark

1 Fan

2 RF input

3 Local RF input Generally reserved

4 Ground stud Used for the connection of device and ground wire

5 Optical input Inserted optical signal input (without inter-cut function, no this port)

6 Optical signal

output

This interface is the optical signal output port of the device (If select

inter-cut function, this port is mixed output)

7 RS232 interface Used for configuring the network management parameters.

8 LAN interface Correspond to IEEE802.3 10Base-T, used for network management.

9 Switching power

supply Hot plug

1 2 3 4 5 6 7 8 9 9

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 7 -

3.4 Menu Operation

3.4.1 Main Menu

Displayed parameters Comments

Boot display

1.Disp Parameters Menu one: Display parameters

2.Set Parameters Menu two: Set parameters

3.Alarm Status Menu three: Alarm status

In: 0.0 Out:10.3

dBuV dBm

Enter

1. Disp Parameters

2.Set Parameters

3.Alarm Status

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 8 -

3.4.2 Display Menu

1.Disp Parameters Enter

Laser Power: xx.xdBm

Laser Bais: xx.xmA

Laser Temp: xx.x℃

Tec Current: -x.xxA

RF Chan NO: 1

IP : xxx.xxx.xxx.xxx

Msk: xxx.xxx.xxx.xxx

GTW: xxx.xxx.xxx.xxx

Mac: XX-XX-XX-XX-XX-XX

SofteWare Ver: VX.X

RF Control Mode: AGC

AGC Ref: xdB

Laser RF: x dBuV

RF Ctrl Mode: MGC

MGC ATT: XdB

Wave Length: xxxx.xnm

+5V Read: x.xxV

BOX Temp: xx.x℃

S/N: xxxx.xx.xx

-5V Read: -x.xxV

+24V Read: xx.xxV

OP After ATT: xx.xdBm

Input Power: -xx.xdBm

OT1550-DM Intelligent Direct Modulated Optical Transmitter

- 9 -

Displayed parameters Comments

Laser Power Laser output optical power

OP After ATT Optical power after attenuation

(without inter-cut function, no this menu)

Input Power External optical signal power

(without inter-cut function, no this menu)

Laser Bais Laser bias current

Laser Temp Laser temperature

Tec Current Cooler current

RF Chan NO Channel number

Laser RF Laser RF power

RF Ctrl Mode RF control mode

MGC ATT MGC attenuation (in MGC mode)

AGC Ref AGC deviator (in AGC mode)

Wave Length Wavelength

+5V Read +5V monitoring voltage

-5V Read -5V monitoring voltage

+24V Read +24V monitoring voltage

S/N Serial number

BOX Temp Temperature

IP IP

Msk Subnet mask

GTW Gateway

Mac MAC address

SofteWare Ver Version number

Tabla de contenidos

Manuales populares de Transmisor de otras marcas

NIVELCO

NIVELCO EasyTREK SCA-300 Series Manual del propietario

Honeywell

Honeywell 5816WMBR Manual de usuario

Kamstrup

Kamstrup READy MTU Instrucciones de funcionamiento

Omega

Omega ZW Series Manual de usuario

ABB

ABB Field 264H Guía

Alinco

Alinco DJ-V17T Manual de usuario

Dejero

Dejero EnGo 3x Manual de usuario

Rosemount

Rosemount 4600 Manual de usuario

Speaka Professional

Speaka Professional 2342740 Manual de usuario

trubomat

trubomat GAB 1000 Manual de usuario

Teledyne Analytical Instruments

Teledyne Analytical Instruments LXT-380 Manual de usuario

Rondish

Rondish UT-11 Manual de usuario

MG 10JRE Manual de usuario

Burkert

Burkert 8177 Manual de usuario

Firetide

Firetide HotPort 3203 Manual

Tele Radio

Tele Radio T9-02 Manual de usuario

Rotronic

Rotronic HygroFlex HF3 Series Manual de usuario

Jamara

Jamara FCX6 Pro Tel Manual de usuario