Prevail-Catv WT-1550-DM Operating Manual Download

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WT-1550-DM Intelligent Direct Modulated Optical Transmitter

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Displayed parameters

Comments

Remarks

Set LaserOutPut Unit

Set the unit of output optical

power

Set Buzzer Alarm

Set the buzzer alarm

YES is on, NO is off

Set RF Control Mode

Set the RF control mode

AGC and MGC two modes selectable

Set MGC ATT

Set the ATT in MGC mode

Adjustable range 0~20dB

Set AGC Ref

Set the deviator in AGC mode

Adjustable range

±3

Set PredATT Mode

Set the predistortion control

mode

Two modes:
Auto is automatic control mode; Manu is
manual control mode.

Set FiberC Length

Set the transmission distance in

automatic control mode

1km stepping

Set Channel Number

Set the channel number

Set Local IP Address

Set the IP address

Set SubNet Mask

Set the subnet mask

Set GateWay

Set the gateway

Restore Factory

Restore factory settings

Set OPT ATT Mode

Set the optical power ATT

mode

Without inter-cut function, no this menu

Set OPT ATT

Set the optical power

attenuation

Without inter-cut function, no this menu

Set OPT Delta

Set the difference between the

main optical power and the

inserted optical power

Without inter-cut function, no this menu

3.4.4 Alarm Menu

The displayed alarm content

Comment

RF Alarm

RF alarm

Laser Temp

Laser temperature alarm

Laser Bais

Laser bias current alarm

Laser Tec

Laser cooling current alarm

Output Alarm

Output optical power alarm

+5V Alarm

+5V alarm

-5V Alarm

-5V alarm

+24V Alarm

+24V alarm

Summary of Contents for WT-1550-DM

Page 1: ...WT 1550 DM Intelligent Direct Modulated Optical Transmitter Operating Manual ...

Page 2: ...50 DM Optical Transmitter 12 4 1 Receiving and Inspecting 12 4 2 Precautions 12 4 3 Mounting WT 1550 DM 12 4 3 1 Mounting the WT 1550 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 ...

Page 3: ...ompensate 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 W...

Page 4: ...itter 3 Block Diagram WT 1550 DM directly modulated optical transmitter block diagram WT 1550 DM inter cut part block diagram 1 3 Product Applications 1550nm Optical fiber transmission system Construct the CATV network Local value added services inter cut ...

Page 5: ...BuV 75 85 Flatness in band dB 0 75 RF input impedance Ω 75 Input return loss dB 16 C CSO dB 60 25Km optical fiber 0dB received C CTB dB 65 C N dB 51 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 p...

Page 6: ... 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 3 1 1 Indicator Description Power indicator POWER Power on LED green Running indicator RUN Run normally LED flash green Laser indicator Laser OFF LED red Laser ON LED green RF input indicator RF No output or exceed the normal range LED flash red Normal LED green 11 ...

Page 7: ...hout 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 3 3 Power Module 3 3 1 220V Power Mod...

Page 8: ...Out 10 3 dBm Enter 1 Disp Parameters ESC 2 Set Parameters 3 Alarm Status 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 ...

Page 9: ...Bm OP After ATT xx xdBm Laser Bais xx xmA Input Power xx xdBm Tec Current x xxA RF Chan NO 1 Laser RF x dBuV RF Ctrl Mode MGC RF Control Mode AGC MGC ATT XdB AGC Ref xdB Wave Length xxxx xnm ESC 5V Read x xxV 5V Read x xxV 24V Read xx xxV S N xxxx xx xx 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 ...

Page 10: ...on 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 Temperat...

Page 11: ...it mW dbm Set Buzzer Alarm YES NO Set RF Control Mode AGC MGC Set MGC ATT 0dB Set AGC Ref xdBm ESC Set PredATT Mode Auto Manu Set FiberC Length 0Km Set Channel Number x Set Local IP Address xxx xxx xxx xxx Set SubNet Mask xxx xxx xxx xxx Set GateWay xxx xxx xxx xxx Restore Factory YES NO Set OPT ATT Mode Auto Manu Set OPT ATT 0dB 0dB ...

Page 12: ... control mode 1km stepping Set Channel Number Set the channel number Set Local IP Address Set the IP address Set SubNet Mask Set the subnet mask Set GateWay Set the gateway Restore Factory Restore factory settings Set OPT ATT Mode Set the optical power ATT mode Without inter cut function no this menu Set OPT ATT Set the optical power attenuation Without inter cut function no this menu Set OPT Delt...

Page 13: ...ing lug on the WT 1550 DM 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 4 3 2 Connecting the RF Cables Verify the RF input F connector type according to the ordering informati...

Page 14: ...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 DM To connect the WT 1550 DM 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 The Ethernet port is...

Page 15: ...nect 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 a...

Page 16: ...page of serial port As follows Change the serial port configuration to 38400 baud rate 8 data bits no parity bit 1 stop bit no data flow control press the OK button you have set up the Windows serial port Hyper Terminal You can click file save menu to save this configuration of Hyper Terminal for later using ...

Page 17: ...nnect the RS232 port with the computer port Open the Windows Hyper Terminal which you have set up Then turn on the power you will see the page as follows Enter the password to enter the configuration interface Enter the password display the following screen You can input your command in this page and then configure the operating parameter of the application program ...

Page 18: ...IP address of the SNMP Trap Configure the SNMP group name Restore the factory default values Set the serial number Set the login password Set the logo and equipment model Log out Specific using as follows help This command shows current application program version program name and the internal commands list of the system as follows You can also use the help command to show help information of othe...

Page 19: ...o addresses community This command configures the read only group name and read write group name Group name is the concept of SNMP agreement like the password Use the command community ro to configure the read only and community rw for the read write For example input community rw public public is the read write group name The group name for read only and read write are both public as the equipmen...

Page 20: ...work devices exchange easier It is part of the TCP IP protocol group SNMP enables the end users to manage network performance find and solve network problems and arrange for future network upgrades Management Information Base MIB is the organized hierarchical information set Use SNMP to visit these MIB They are composed of manageable information and identified by the object identifier SNMP Transmi...

Page 21: ...tor can do more harm than good Never spray a clean air product onto the surface of an optical connector Spraying air onto an optical connector can cause condensation on the connector surface leaving water spots and trapping dust Failing to wipe a connector on dry lens paper immediately after wiping on paper wet with isopropyl alcohol can also lead to condensation on the connector Using low grade c...

Page 22: ...l cost 2 When the equipment breaks down immediately contact local distributor or directly call our technical support hotline 86 0571 82576002 18967160936 3 The site maintenance of the fault equipment must be operated by professional technicians to avoid worse damage Special notice If the equipment has been maintained by users we will not responsible free maintenance We will ask suitable maintenanc...

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