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Digital DFB laser transmitter for digital return path fibre optic links in CATV networks. Includes two return path inputs and one optical wavelength carries two RF return paths. Available at different ITU wavelengths to support DWDM applications.


  • Small form factor family, 2 RU height
  • Standardised input and test point levels
  • Adjustable input attenuator and equaliser
  • Integrated driver amplifiers
  • Two RF return paths on one optical carrier
  • High optical output power
  • Long link span
  • Low power consumption
  • Fibre connectors can be located at the rear or at the front panel
  • Local and remote software control of all adjustments
  • Forced cooling through the unit


  • LED indicators for signal and module statuses
  • Optical output power monitoring
  • Laser bias current control
  • Laser temperature monitoring and control
  • TEC current control
  • Manual level and slope adjustment
  • Internal temperature measurement and monitoring
  • Intelligent fan speed control with monitoring
  • Non-volatile logging of 32 latest events, including alarms, alarming values, settings changes and application starts.
  • Uptime and total uptime counters
  • All alarm limits fully user configurable
  • Local PC connection through backplane HDO bus with HDX021 cable
  • Remote IP connection through HDC100 controller module
  • SNMP monitoring and configuration through HDC100 controller module
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