2. The optical fiber distance is adjustable according to the actual use condition by 1km stepping. 3. OTM-1550LⅡ: Built-in WDM, multiplex the inserted optical signal and the main optical signal then output. 4. OTM-1550L Ⅲ: Built-in WDM and adjustable attenuator.
10mW, and the optical output wavelength can choose ITU standard wavelength. OTM-1550L-II: on the base of OTM-1550L-I, add inter-cut function and built-in WDM. The WDM specification please specify when ordering. OTM-1550L-III: on the base of OTM-1550L-II, add VOA Variable Optical Attenuator, can adjust the signal optical power intensity by the menu options on the front panel.
Technical passport / OTM-1550 2. Technique Parameters Item Unit Technique Parameters Output optical power 1550±10 (have to be ITU wavelength when Optical wavelength with inter-cut function) Dispersion compensation ≤50 distance Laser type DFB laser Optical modulation mode Direct optical intensity modulation Optical connector type FC/APC or SC/APC Frequency range...
Technical passport / OTM-1550 3. Panel Interface and Menu System Description 3.1 Front Panel Front panel schematic diagram Power indicator Running indicator Laser indicator RF input indicator ESC key UP key DOWN key Enter key RF output test port Laser switch 3.1.1 Indicator Description Power indicator (POWER) Power on...
Technical passport / OTM-1550 3.2 Rear Panel Rear Panel schematic diagram Name Remark RF input Local RF input Generally reserved Ground stud Used for the connection of device and ground wire Optical input Inserted optical signal input (without inter-cut function, no this port) Optical signal This interface is the optical signal output port of the device (If select output...
Technical passport / OTM-1550 3.4 Menu Operation 3.4.1 Main Menu In: 0.0 Out:10.3 Enter dBuV 1. Disp Parameters 2.Set Parameters 3.Alarm Status Displayed parameters Comments Boot display Menu one: Display parameters 1.Disp Parameters Menu two: Set parameters 2.Set Parameters Menu three: Alarm status 3.Alarm Status 12-2016-v4...
Technical passport / OTM-1550 3.4.2 Display Menu 1.Disp Parameters Enter Laser Power: xx.xdBm OP After ATT: xx.xdBm Laser Bais: xx.xmA Input Power: -xx.xdBm Laser Temp: xx.x℃ Tec Current: -x.xxA RF Chan NO: Laser RF: x dBuV RF Control Mode: RF Ctrl Mode: MGC ATT: AGC Ref: Wave Length:...
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Technical passport / OTM-1550 Displayed parameters Comments Laser Power Laser output optical power Optical power after attenuation OP After ATT (without inter-cut function, no this menu) External optical signal power Input Power (without inter-cut function, no this menu) Laser Bais Laser bias current Laser Temp Laser temperature...
Technical passport / OTM-1550 3.4.3 Set Menu Enter 2.Set Parameters Set LaserOutPut Unit Set Buzzer Alarm Set RF Control Mode Set MGC ATT xdBm Set AGC Ref Auto Manu Set PredATT Mode Set FiberC Length Set Channel Number Set Local IP Address xxx.xxx.xxx.xxx Set SubNet Mask xxx.xxx.xxx.xxx...
Technical passport / OTM-1550 Displayed parameters Comments Remarks Set the unit of output optical Set LaserOutPut Unit 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...
Mounting the OTM-1550L in the standard 19 inch equipment rack: 1. Place the equipment in the rack. 2. Use four screws fixed the mounting lug on the OTM-1550L front panel to the rack. 3. Reliably ground the equipment. The ground terminal is on the rear panel.
4. Note to butt the nick of the connectors and align them accordingly. 4.3.4 Connecting the Ethernet Cable You can connect the OTM-1550L 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 OTM-1550L.
4.3.5 Connecting Power The OTM-1550L is available in an AC220V power model. After mounting the OTM-1550L in a rack, follow the power connection procedure below for the model that you are installing. Can be equipped with two 220V power supply that requires input voltage 150~...
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Technical passport / OTM-1550 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: Press the “OK” button shows the configuration 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”...
Technical passport / OTM-1550 You can click “filesave” menu to save this configuration of Hyper Terminal for later using. 5.3 Operating Parameters Configuration Under the condition of power off, use the serial port lines to connect 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.
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Technical passport / OTM-1550 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. System supports the f ollowing commands: help List internal commands of the system; ethcfg Configure the Ethernet operating parameters;...
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Technical passport / OTM-1550 Specific using as follows: help This command shows current application progr am 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 other commands, such as “help ethcfg”,ethcfg’s help inform ation appears as follows:...
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Technical passport / OTM-1550 This command configures the Ethernet parameters, including IP address, subnet mask nd gateway. You can refer to the help information for its using. settrap This command shows or modifies the aim host IP address list of the SNMP Trap, IP address of 0.0.0.0 and 255.255.255.255 don’t exist.
Technical passport / OTM-1550 5.4 Remote Monitoring: SNMP LAN communication interface Adopt RJ45 standard connector, the pin definitions as follow: 1: TX+ 2: TX- 3: RX+ 4: No Connect 5: No Connect 6: RX- 7: No Connect 8: No Connect A: Green indicator flashing means that the LAN port is sending data.
We recommend that you clean all mating fiber connectors before connecting them to an optical transmitter. In addition, if you suspect that the optical connector of OTM-1550L may have been exposed to contamination (by a dirty fiber cable connector, for example), you should properly clean the OTM-1550L optical connector before connecting the optical fiber.
Technical passport / OTM-1550 6.2 Troubleshooting Should a problem occur, see if the symptoms are listed in Table 6-1. Table 6-1: Troubleshooting Solutions Alarm menu Fault Indicator status Solution content phenomenon Verify the switch is on and the power supply is connected. If that does not Power indicator is off correct the problem, contact Customer Service.
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