Matchmaster 20MM-LT10L Bedienungsanleitung

20MM-LT10L

DVB-T, DVB-C & Satellite

Optical Transmitter

Operating Manual

20MM-LT10L Optical Transmitter Operating Manual

- 1 -

Table of Contents

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

1. Product Summary ................................................................................................. - 2 -

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

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

1.3 Product Applications .................................................................................... - 3 -

2. Technical Parameters ............................................................................................ - 3 -

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

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

3.1.1 Indicator Status Description .............................................................. - 4 -

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

3.3 Menu Operation ........................................................................................... - 5 -

3.3.1 Main Menu ........................................................................................ - 5 -

3.3.2 Display Menu .................................................................................... - 6 -

3.3.3 Setup Menu ........................................................................................ - 7 -

3.3.4 Alarm Menu ....................................................................................... - 7 -

4. Installing the 20MM-LT10L Optical Transmitter ................................................. - 8 -

4.1 Receiving and Inspecting ............................................................................. - 8 -

4.2 Precautions ................................................................................................... - 8 -

4.3 Mounting the 20MM-LT10L ....................................................................... - 8 -

4.3.1 Mount the 20MM-LT10L in a cabinet ............................................... - 8 -

4.3.2 Connecting the RF Cables ................................................................. - 9 -

4.3.3 Connecting the Optical Fiber Cables ................................................. - 9 -

4.3.4Connecting the Ethernet Cable ........................................................... - 9 -

4.3.5 Connecting Power ............................................................................ - 10 -

5. Communication Setup ........................................................................................ - 10 -

5.1 RS232 Communication Interface Description ........................................... - 10 -

5.2 Set up the Hyper Terminal ......................................................................... - 10 -

5.3 Operating Parameter Configuration ........................................................... - 12 -

5.4 Remote Monitoring: SNMP ....................................................................... - 14 -

6. Maintenance and Troubleshooting ...................................................................... - 16 -

6.1 Cleaning Fiber Optic Connectors .............................................................. - 16 -

6.1.1 Cleaning Patch Cord or Pigtail Fiber Optical Connectors ............... - 16 -

6.2 Troubleshooting ......................................................................................... - 17 -

6.3 After-sales Service Description ................................................................. - 18 -

6.4 Disclaimer .................................................................................................. - 18 -

20MM-LT10L Optical Transmitter Operating Manual

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1. Product Summary

1.1 About This Manual

This instruction manual is a complete guide to installing and operating the (1RU)

20MM-LT10L direct modulated optical transmitter. Please read the entire manual

before beginning installation.

This manual applies to 20MM-LT10L direct modulated optical transmitter.

• Chapter 1 gives general information about the 20MM-LT10L.

• Chapter 2 describes the technical parameters.

• Chapter 3 describes the panel interface and menu system.

• Chapter 4 tells you how to install the 20MM-LT10L.

• Chapter 5 describes the communication setting

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

1.2 Product Description

20MM-LT10L satellite optical transmitter adopts a high linearity cooling DFB

laser, direct modulated. Simultaneous transmission of 47-862MHz CATV signal and

950~2600MHz satellite direct TV signal in one optical fiber.

20MM-LT10L satellite optical transmitter can use ITU standard wavelengths and

be integrated with DWDM for Network upgrades and expansion. Its optical power

can be amplified by an EDFA or YEDFA to achieve large area FTTx. It is compatible

with FTTx PON technology to achieve FTTH and the multi-network integration of

CATV (Analogue, DVB-T,T2, DVB-C), Satellite Television (DVB-S/S2) and Internet.

20MM-LT10L is in 1RU 19” standard rack form, with a built in microprocessor

controlling the working parameters via keys and front panel LCD to provide status

display and fault diagnosis. Standard RJ45 communication interface, with SNMP

network management function. Built-in perfect laser APC and ATC control circuit to

ensure the long working life and high reliable of the laser.

SAT-IF adopts a high linearity IF driving amplifier circuit with AGC function to

ensure high-quality transmission of Analog TV, Digital TV (DVB-C, DVB-T/T2) and

Satellite TV in one optical fiber.

20MM-LT10L Optical Transmitter Operating Manual

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Block Diagram:

1.3 Product Applications

• One optical fiber transmits CATV and Satellite band up to 2600MHz

• FTTx PON (EPON, GPON)

2. Technical Parameters

Performance

Index

Unit

Remark

Optical Characteristics

Laser Type

DFB

Specified by the user

Optical Wavelength

1310, 1550 or specified

by the user

Specified by the user

Output Optical Power

2, 4, 6, 8, 10

Specified by the user

Output Return Loss

Optical Connector Type

SC/APC or FC/APC

Specified by the user

CATV RF Characteristics

Working Bandwidth

45-862

MHz

Input Range

75~85

dBµV

Input level

Flatness

±1

Input Return Loss

C/N

≥51

42CH CENELEC

80dBµV AGC

OMI=3.8%

C/CTB

≥63

C/CSO

≥58

Input Impedance

RF Connector

F type Male/Female

Specified by the user

20MM-LT10L Optical Transmitter Operating Manual

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SAT-IF Characteristics

Working Bandwidth

950~2600

MHz

Input Range

68~83

dBµV

Input level

Flatness

±1

Input Return Loss

C/IM3

≥55

Note1

General Characteristics

Power Supply (AC)

110~265

Optional dual power

Consumption

SNMP network

management interface

RJ45

Working Temperature

0~50

°C

Storage Temperature

-40~60

°C

Dimension (W)*(D)*(H)

1U 19 inch

483*395*44

Note1: C/IM3 is defined as the ratio between the peak of carrier signal and triple beat

(IM3) by using a two-tone test (1.0GHz and 1.1GHz).

3. Panel Interface and Menu System Description

3.1 Front Panel

Power indicator

Run indicator

Laser working indicator

RF input indicator

LCD

ESC

Down

Enter

Laser switching key

RF input test port

3.1.1 Indicators Status Description

Power indicator

Power on

LED green

Run indicator

Normal

LED green

Laser indicator

LED green

RF input indicator

No input or exceed the

normal range

LED flash red

Normal

LED green

20MM-LT10L Optical Transmitter Operating Manual

- 5 -

3.2 Rear Panel

Fan outlet

RF signal input port

Voltage output switch

+18V indicator

+12V indicator

RS232 interface

LAN interface

Optical output interface

Power socket

Ground stud

Note: When the voltage output is switched on the ‘－’ side, the +12V indicator is on

and the RF signal input port is supplied with +12VDC voltage output.

When the voltage output is switched on the ‘○’ side, the RF signal input port

has no voltage output.

When the voltage output is switched on the ‘＝’ side, the +18V indicator is on

and the RF signal input port is supplied with +18VDC voltage output.

3.3 Menu Operation

3.3.1 Main Menu

Display parameters

Description

Boot display

1.Disp Parameters

Menu 1: Display parameters

2.Set Parameters

Menu 2: Set parameters

3.Alarm Status

Menu 3: Alarm status

20MM-LT10L Optical Transmitter Operating Manual

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3.3.2 Display Menu

Display

parameters

Description

Display

parameters

Description

Laser Output

Output optical power

+24V

+24V monitor voltage

Laser Bias

Laser current

S/N

Serial number

Laser Temp

Laser temperature

BOX

Temperature

Box temperature

TEC Cooling

Cooling current

IP Address

IP address

RF Control

Mode

RF control mode

Sub Mask

Subnet mask

AGC Ref

AGC attenuation

Net Gateway

Gateway

+5V

+5V monitor voltage

MAC

Mack address

-5V

-5V monitor voltage

Software Ver

Software version number

+12V

+12V monitor voltage

+18V

+18V monitor voltage

20MM-LT10L Optical Transmitter Operating Manual

- 7 -

3.3.3 Setup Menu

Display parameters

Description

Remark

Set Laser Output Unit

Set optical power output unit

mW and dBm optional

Set Buzzer Alarm

Set buzzer alarm

YES is on, NO is off

Set RF Control Mode

Set RF control mode

AGC and MGC optional

Set MGC Ref

Set attenuation under MGC mode

Adjustable range 0~15dB

Set AGC Ref

Set attenuation under AGC mode

AGC control range -3~+3dB

Set Channel Number

Set channel number

Set Local IP Address

Set IP address

Set Subnet Mask

Set subnet mask

Set Gateway

Set gateway

Restore Factory

Restore factory settings

3.3.4 Alarm Menu

Display alarm content

Description

RF Alarm

RF alarm

Laser Temp

Laser temperature alarm

Laser Bias:

Laser current alarm

Output Alarm

Output alarm

Laser Tec

Laser cooling current alarm

+5V Alarm

+5V voltage alarm

-5V Alarm

-5V voltage alarm

+12V Alarm:

+12V voltage alarm

+18V Alarm:

+18V voltage alarm

+24V Alarm

+24V voltage alarm

20MM-LT10L Optical Transmitter Operating Manual

- 8 -

4. Installing the 20MM-LT10L 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 Matchmaster.

CAUTION: To protect yourself from potential injury and to protect the

equipment from further damage, do not perform any

operational tests if the equipment appears to be damaged.

4.2 Precautions

Heed the following precautions when working with the 20MM-LT10L.

Warning

Read the installation instructions before connecting the

system to the power source.

Warning

The power socket ends must be accessible at all times, as it

serves as the mains disconnection.

4.3 Mounting the 20MM-LT10L

4.3.1 Mount the 20MM-LT10L in a cabinet

To mount the 20MM-LT10L in a standard 19-inch equipment cabinet:

1. Place the unit in the cabinet.

2. Use four mounting screws to attach the mounting ears on the front panel to the

cabinet.

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.

20MM-LT10L Optical Transmitter Operating Manual

- 9 -

4.3.2 Connecting the RF Cables

Verify the type of RF input F connector according to the ordering information, and

then connect with the matched RF cable.

4.3.3 Connecting the Optical Fiber Cables

20MM-LT10L has one output optical connector.

DANGER: The fiber carries invisible laser radiation. AVOID DIRECT

EXPOSURE TO BEAM. Never operate the unit with a

broken fiber or with a fiber connector disconnected.

1. Verify the optical fiber connector type is matched with 20MM-LT10L according

to the ordering information. (SC/APC)

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 20MM-LT10L optical connector has not been exposed to any

contamination.

NOTE: Any contamination of the optical connector can significantly

degrade optical link performance. This degradation will most

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

4. Note the key characteristics of the mating connectors and align them accordingly.

4.3.4 Connecting the Ethernet Cable

You can connect the 20MM-LT10L 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 20MM-LT10L.

To connect the 20MM-LT10L, 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 rear of the transmitter.

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

connection.

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