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Summary of Contents for Comcast 1310nm TX
- Page 1 1310nm TX 1310nm Transmitter www.comcast-sa.com...
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Page 2: Table Of Contents
1310nm TX Contenido 1. Product Summary ...........................4 2. Performance characteristics .......................4 3. Block Diagram ..........................6 4. Technology Parameters ........................6 4.1 Link test conditions ........................6 4.2 Technique Parameters Table ....................7 ...............................7 4.3 Optical link carrier to noise ratio degradation table ..............8 5. - Page 3 1310nm TX This manual applies to 1310nm AM direct modulated optical transmitter with SNMP network management interface. It mainly describes the performance characteristics, technical parameters, installation and debugging, common troubleshooting, and other related content of the product. In order to ensure that the equipment can be successfully installed and safely operated, please read this manual carefully before installing and debugging the equipment.
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Page 4: Product Summary
1310nm TX 1. Product Summary 1310nm AM direct modulated optical transmitter is the most important equipment to construct the CATV HFC network. It mainly used for the long distance optical fiber transmission of TV image signal, digital television signal, telephone voice signal and data (or compressed data) signal. This product does use the high-performance DFB laser as the optical source. - Page 5 1310nm TX ■ 19″1U standard rack mount, equipped standard IEEE802.3 10Base-T Ethernet interface and RS232 interface, can expediently realize network management monitoring. ■ Fully support <GB/T 20030-2005 HFC Network device management system specification>. www.comcast-sa.com...
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Page 6: Block Diagram
1310nm TX 3. Block Diagram 4. Technology Parameters 4.1 Link test conditions 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. -
Page 7: Technique Parameters Table
1310nm TX 4.2 Technique Parameters Table www.comcast-sa.com... -
Page 8: Optical Link Carrier To Noise Ratio Degradation Table
1310nm TX 4.3 Optical link carrier to noise ratio degradation table www.comcast-sa.com... -
Page 9: External Function Description
1310nm TX 5. External Function Description 5.1 Front Panel Description 1) Power indicator: The light is on while the switching power supply inside is working. 2) Device running indicator: This indicator will flash after the device start running. 3) Laser working status indicator: Red light means the laser is not working, but the machine parameters are normal;... -
Page 10: Rear Panel Description
1310nm TX 10) Laser switching key: used to control the working status of laser. “ON” means the laser is open and “OFF” means the laser is closed. Ensure the key is on “OFF” position before power on. After passing self-test, rotate the key to “ON”... -
Page 11: Displayed Parameter Description
1310nm TX 5.3 Displayed Parameter description 1) Power on, if the key is on the off position, shows: Product’s Logo and model 2) Turn the key to the on position, shows the turn on delay: Delay countdown 3) After entering the system: RF input signal level and optical output power at present 4) Press “Enter”... - Page 12 1310nm TX www.comcast-sa.com...
- Page 13 1310nm TX www.comcast-sa.com...
- Page 14 1310nm TX 6) Setting menu Press “Enter” key into the menu www.comcast-sa.com...
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Page 15: Installation Debugging
1310nm TX 7) Warning menu Press “ENTER” into the alarm menu 6. Installation debugging 6.1 Unpack and Check 1. Insure the package is not defaced. If it has any damage or water mark, please contact local agency or carrier. 2. After unpacking, check equipments and accessories according to package list. - Page 16 1310nm TX 3. Use the digital multimeter to check the supply voltage, make sure the supply voltage comply with the requirements and the switch key is on the “OFF” position. Then connect the power supply. 4. Input the RF signal, turn the switch key to the “ON” position and observe the front panel LED status.
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Page 17: Common Failure Analysis And Troubleshooting
1310nm TX 7. Common Failure Analysis and Troubleshooting Failure phenomenon Failure cause Solution Power on, the front Switching power supply Check if the power panel display screen couldn't start; supply is normal (should and power indicator are equipment; internal DC be AC: 110V-250V). - Page 18 1310nm TX signal 2. Check the input level deteriorates. optical 2. The RF signal input of transmitter RF signal, the optical transmitter and adjust to the device is too high; beyond the required input range. device control (RF signal input level...
- Page 19 1310nm TX the system link signal C/N﹥ 51dB. After initial startup, the optical contact 1. Check if there is a image of several optical point has open circuit strong interference contact points signal interference or signal source; change randomly appear...
- Page 20 1310nm TX grounding resistance is﹤4Ω. After initial startup, the fiber connector Check fiber received optical power types do not match, connector type; adopt of the optical contact maybe the APC type the APC type fiber point is unstable and connect to PC type,...
- Page 21 1310nm TX www.comcast-sa.com...
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Page 22: The Clean And Maintenance Method Of Optical Fiber Connector
1310nm TX The Clean and Maintenance Method of Optical Fiber Connector In many times, we consider the decline of the optical power as the equipment faults, but actually it may be caused by that the optical fiber connector was polluted by dust or dirt. Inspect the fiber connector, component, or bulkhead with a fiberscope. - Page 23 1310nm TX adapter, clean the china tube with compressed air. When use degrease alcohol cotton, insert directions need be consistent, otherwise can’t reach a good clean effect. Special notice: a. In the process of clean the active optical fiber connector, you should avoid direct shining at eye, which will cause permanence burn!!!! b.
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