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Teleste - HDO775 NADAJNIK

HDO775 downstream transmitter supports frequencies up to 1218 MHz and has one adjustable 10 dBm output. HDO775 is a directly modulated 1550 nm DWDM transmitter for short, medium and long distances. It supports broadband, narrowcast and broadcast services in digital and analog formats.


  • DOCSIS 3.1 compatible 1.2 GHz bandwidth
  • ITU wavelengths in 100 GHz grid
  • Optical output power adjustment for channel power equalising
  • Electrical dispersion compensator provides a good CSO performance at longer transmission distances
  • Standardised input and test point levels
  • Low power consumption and high performance
  • Two identical inputs with individual level and slope adjustments
  • High isolation between inputs
  • Unused input can be switched off for power saving and noise reduction
  • Drive amplifier can be set to power save mode in narrowcast load conditions
  • Integrated input amplifiers and laser driver amplifiers
  • Automatic power control providing constant total OMI as standard feature
  • Optional integrated xWDM filter to combine forward and return paths into one fibre or to combine various forward wavelengths into one fibre
  • Optional spectrum analyser function enabling ALSC
  • Fibre connectors can be located at the rear or at the front panel
  • Small form factor family, 2 RU height
  • Local and remote software control of all adjustments
  • Forced cooling through the unit

Management features

  • Monitoring of APC (Automatic Power Control) functionality with user configurable offset
  • Optical output power adjustment and monitoring
  • Laser bias current monitoring
  • TEC (Thermo-Electric Cooler) current monitoring
  • Laser temperature monitoring
  • Signal level adjustment in both inputs
  • Slope adjustment in both inputs
  • Input 2 switch on/off
  • Drive amplifier power save mode on/off
  • Link length setting
  • LED indicators for signal and module statuses
  • Internal temperature measurement and monitoring
  • Intelligent fan speed control with monitoring
  • Non-volatile logging of events, including alarms, alarming values, settings changes and application starts
  • Uptime and total uptime counters
  • All adjustments and 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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