Prevail-Catv WT-1550-EM20 Series Manual de usuario

WT-1550-EM20

1550nm external modulated

optical transmitter

operating manual

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 1

Table of Contents

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

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

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

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

1.3 Features..................................................................................................................................................... - 2 -

1.4 Block Diagram........................................................................................................................................... - 2 -

1.5 Product Applications................................................................................................................................. - 2 -

2. Technique Parameters....................................................................................................................................... - 3 -

2.1 Optical Parameters................................................................................................................................... - 3 -

2.2 Model Test Indicators............................................................................................................................... - 3 -

2.3 Test Condition ........................................................................................................................................... - 3 -

2.4 Technical Data Sheet............................................................................................................................... - 4 -

3. Panel Interface and Menu System Description.............................................................................................. - 4 -

3.1 Front Panel................................................................................................................................................ - 4 -

3.2 Rear Panel................................................................................................................................................. - 5 -

3.3 Power Module........................................................................................................................................... - 5 -

3.4 Menu Operation........................................................................................................................................ - 5 -

4. Installing the WT-1550-EM20 Optical Transmitter......................................................................................... - 7 -

4.1 Receiving and Inspecting........................................................................................................................ - 7 -

4.2 Mounting WT-1550-EM20....................................................................................................................... - 7 -

5. Communication Setup........................................................................................................................................ - 9 -

5.1 RS232 Communication Interface Description...................................................................................... - 9 -

5.2 Set up the Hyper Terminal....................................................................................................................... - 9 -

5.3 Operating Parameters Configuration................................................................................................... - 10 -

5.4 Remote Monitoring: SNMP................................................................................................................... - 12 -

5.5 WEB Network Management.................................................................................................................. - 13 -

6. Maintenance and Troubleshooting................................................................................................................. - 14 -

6.1 Cleaning Fiber Optic Connectors......................................................................................................... - 14 -

6.2 Troubleshooting...................................................................................................................................... - 15 -

6.3 After-sales Service Description ............................................................................................................ - 16 -

6.4 Disclaimer................................................................................................................................................ - 16 -

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 2

1. Overview

1.1 About This Manual

This instruction manual is guide to install and operate the (1RU) WT-1550-EM20 series 1550nm external

modulated optical transmitter. Please read the entire manual before beginning installation.

This manual applies to WT-1550-EM20 series external modulated optical transmitter.

1.2 Product Description

WT-1550-EM20 series optical transmitter adopt top-international brand external modulated laser and

external modulator, Prevail patent pre-distortion circuit and SBS control circuit. Overall indexes reach to

well-known brand types level, and price is inexpensive.We have sold thousands of products over the

years.The products save plenty of costs for operator’s network construction and get many users’good

reputation.

1.3 Features

◆This 1550nm optical transmitter can be used in long-distance transmission.

◆Double microwave source SBS control, +13～+19dBm adjustable, 0.5dB step.

◆Adopt the DFB laser and LiNbO3 external modulator.

◆support Ethernet transponder

◆support WEB and SNMP network management.

◆Hot backup dual power modules

1.4 Block Diagram

1.5 Product Applications

• High-performance long-distance transmission

• High-power distribution network

• Redundancy loop architecture

• FTTx network

• RFOG application

• DWDM network

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 3

2. Technique Parameters

2.1 Optical Parameters

Item

Unit

Value

Optical Wavelength

1545～1560 (or specified by the user)

Side-mode Suppression ratio

>30

Relative Intensity Noise

dB/Hz

<-160

Wavelength Adjustment Range

GHz

+/-50GHz

Optical Power

dBm

2*7, 2*8, 2*9, 2*10

SBS Threshold Value

dBm

+13～+19 (Continuously adjustable)

Laser Linewidth

MHz

0.3

2.2 Model Test Indicators

Test Model

C42

D59

D84

Channel Plan

CENELEC42

PAL D59

PAL D84

Channel Number TV/FM/QAM64

42/0/0

59/0/0

84/0/0

Bandwidth Noise

CNR Tx/Rx

55.0

54.0

52.5

CNR Link 1

54.0

53.5

52.0

CNR Link 2

53.0

52.5

50.5

CNR Link 3

50.5

49.0

CSO Tx/Rx and Link 1

CSO Link 2

CSO Link 3

CTB

2.3 Test Condition

First stage

EDFA

First

paragraph

fiber length

Second

stage EDFA

Second

paragraph

fiber length

SBS

(dBm)

Tx/Rx

0dBm

13.5

Link 1

35km

0dBm

13.5

Link 2

16dBm

65km

0dBm

Link 3

13dBm

50km

13dBm

50km

0dBm

13.5

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 4

2.4 Technical Data Sheet

Item

Unit

Technical Parameters

RF range

MHz

47～1003

RF flatness

±0.75

RF return loss

>16

RF input impedance

RF input connector type

F type

Input level range

dBµV

80±5

AGC control range

+3～-3

MGC adjustable range

0~15

Optical connector

SC/APC, FC/APC

Operating temperature

°C

-5～45

Storage temperature

°C

-30～+70

Power Source Specification

90～265VAC

36～72VDC

Consumption

≤60

Dimension

483(L) ×455(W) ×44(H)

Total Weight

5.5

3. Panel Interface and Menu System Description

3.1 Front Panel

Power indicator

AGC indicator

RF indicator

Laser indicator

LCD

ESC key

UP key

DOWN key

Enter key

RF input port (optional)

-20dB RF input test port

3.1.1 Indicator Description

Power indicator

One power supply

LED yellow

Two power supplies

LED green

AGC indicator

AGC mode

LED green

MGC mode

LED off

RF indicator

Normal

LED green

Abnormal

LED flash red

Laser indicator

Bias current, cooling current and output

power are all normal

LED green

At least one of bias current, cooling

current and output power is abnormal

LED flash red

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

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3.2 Rear Panel

Ground stud

Power module

Fan

RF input port (or on the front

panel, optional)

RS232 interface

LAN interface

Optical output interface A (or

on the front panel, optional)

Optical output interface B (or

on the front panel, optional)

3.3 Power Module

3.3.1 220V Power Module

Mounting screws

220V power outlet

Fuse

Power switch

3.3.2 48V Power Module

Mounting screws

+ Positive terminal block

- Negative terminal block

3.4 Menu Operation

3.4.1 Main Menu

Display

Comments

1.Disp Parameters

Menu one: Display parameters

2.Set Parameters

Menu two: Set parameters

3.Alarm Status

Menu three:Alarm status

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

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3.4.2 Display Menu

Display

Comments

Display

Comments

Laser Output

Output optical power

+24V Read:

+24V monitor voltage

Laser Bias

Laser current

+12V Read:

+12V monitor voltage

RF CSO

CSO monitor voltage

-12V Read:

-12V monitor voltage

Laser Cooling

Cooling current

LASER：

Laser status

OMI(rms)

Total modulation degree

SBS Module Temp：

SBS module temperature

RF Mode

RF control mode

BOX Temp：

Overall temperature

AGC

Adjusted value with AGC mode

MCU Temp：

MCU temperature

MGC

Adjusted value with MGC mode

S/N：

Serial number

+5V Read:

+5V monitor voltage

Version：

Version number

-5V Read:

-5V monitor voltage

Work Time:

Work time

3.4.3 Set Menu

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 7

Display

Comments

Remarks

Set RF MODE

Set RF control mode

MGC andAGC two modes selectable

Set AGC

Set MGC

Set RF adjusted value

Adjustable range 0~15dB with MGC mode

Adjustable range -3~+3dB with AGC mode

Set SBS Suppression

Set SBS value

Range 13~19dBm, 0.5dB stepping

Set ITU

Set optical wavelength

Range ±50GHz

Set Channel Distance

Set channel distance

6MHz, 7MHz, 8MHz

Set LASER

Set laser status

ON/OFF

Set IPAddress

Set IP address

Set Mask

Set subnet mask

Set Gateway

Set gateway

Set Trap1 Address

Set trap1 address

Set Trap2 Address

Set trap2 address

Set Buzzer Alarm

Set buzzer alarm

ON/OFF

Restore Factory Cfg

Restore factory settings

3.4.4 Alarm Menu

The displayed alarm content

Comment

RF IN Status

HIGH（LOW）

The RF input signal is high (low)

Laser Bais

HIGH（LOW）

The laser bias current is high (low)

Laser TEC

HIGH

The laser cooling current is high

OutPutPower Status

HIGH（LOW）

The output optical power is high (low)

-5V Status

HIGH（LOW）

The -5V voltage is high (low)

+5V Status

HIGH（LOW）

The +5V voltage is high (low)

+12V Status

HIGH（LOW）

The +12V voltage is high (low)

-12V Status

HIGH（LOW）

The -12V voltage is high (low)

+24V Status

HIGH（LOW）

The +24V voltage is high (low)

Laser

OFF

The laser is off

CSO Initialization failed

The CSO initialization is failed

Power invalid

LEFT（RIGHT ）

The left (right) power is invalid

4. Installing the WT-1550-EM20 Optical Transmitter

4.1 Receiving and Inspecting

As you unpack your unit, inspect the shipping container and equipment for damage. Save the shipping

material for future use. If the container or the equipment is damaged, notify both the freight carrier and us.

4.2 Mounting WT-1550-EM20

4.2.1 Mounting the EM20 in the Rack

Mounting the EM3O in the standard 19 inch equipment rack:

1. Place the equipment in the rack.

2. Use four screws fixed the mounting lug on the WT-1550-EM20 front panel to the rack.

3. Reliably ground the equipment. The ground terminal is on the rear panel.

4. Visually inspect each key (button) on the front panel to ensure that it is not trapped under the edge of its

hole. If a key is trapped, tap the key to enable it to move freely.

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 8

4.2.2 Connecting the RF Cables

Verify the RF input F connector type according to the ordering information, then screw on the matched RF

cable.

4.2.3 Connecting the Optical Fiber Cables

1. Verify the matched WT-1550-EM20 fiber cable connector type according to the ordering information.

2. Verify that the fiber cable connector has been cleaned properly. If the fiber cable connector needs to be

cleaned, follow the cleaning procedure outlined in “Cleaning Patch Cord or Pigtail Fiber Optical

Connectors”.

3. Verify that the WT-1550-EM20 optical connector has not been exposed to any contamination.

NOTE: Any contamination of optical connector can significantly degrade optical link performance. This

degradation will most likely manifest itself as poor signal-to-noise (SNR) performance.

4. Note to butt the nick of the connectors and align them accordingly.

4.2.4 Connecting the Ethernet Cable

You can connect the WT-1550-EM20 to your TCP/IP network in order to monitor and control the transmitter

remotely. After you complete the installation procedures described in this chapter, you can use a network

management system (NMS) to monitor and control the WT-1550-EM20.

To connect the WT-1550-EM20, you must use a shielded and grounded Category 5 Ethernet cable.

To connect the Ethernet cable:

1. Connect an Ethernet cable to the transmitter’s RJ-45 Ethernet port and to your TCP/IP network. The

Ethernet port is on the built-in transponder of the transmitter.

2. Verify that the green Link LED is illuminated, indicating that there is a connection. The Link LED is above

the Ethernet port on the rear panel.

4.2.5 Connecting Power

The WT-1550-EM20 is available in an AC power model or DC power model. After mounting the

WT-1550-EM20 in a rack, follow the power connection procedure below for the model that you are

installing.

The AC-powered WT-1550-EM20 has two optional power supplies 110V and 220V:

110V power supply has two 110 VAC (50/60 Hz) input connector that requires input voltage from 90 to 130

VAC, at 50 to 60 Hz single phase. The AC power plug is located on the rear panel.

220V power supply has two 220 VAC (50/60 Hz) input connector that requires input voltage from 150 to

265 VAC, at 50 to 60 Hz single phase. The AC power plug is located on the rear panel.

The DC-powered WT-1550-EM20 has two -48 VDC input connectors that require input voltage from -36 to

-72 VDC. The DC input connectors are located on the rear panel.

Turn on the power source. It takes about 60 seconds for all systems to operate. When connect one power

supply, the power indicator is yellow; when connect two power supplies, the power indicator is green.

Manual of Prevail

Rev1.1 190510 www.prevail-catv.com

No. 27-1, Youyi Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province.

- 9

5. Communication Setup

5.1 RS232 Communication Interface Description

Adopt DB9 standard connector, the pin definitions as follow:

1: No Connect

2: TX

3: RX

4: No Connect

5: GND

6: No Connect

7: No Connect

8: No Connect

9: No Connect

The serial communication uses the standard NRZ form, 1 starts bit, 8 data bits, 1 stop bit and the baud rate

is 38400.

5.2 Set up the Hyper Terminal

If you have not setup the Hyper Terminal in your Windows system, follow the steps:

Click “start menu programaccessorycommunicationHyper Terminal”:

This results in the following screen:

Then you input your connection name, such as “SNMP38400”，and choose the serial port to connect with

your equipment.As follows:

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