Optical Node TERRA OD-120

Code: R81724
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Base Unit UC-380 (for Modular Headend MMH-3000)
General view
Base Unit UC-380 (for Modular Headend MMH-3000)
View of the inside
Base Unit UC-380 (for Modular Headend MMH-3000)
The included accessories
Optical node OD-120 converts optical signals into RF electrical signals. It cooperates with optical transmitters of MOS-211x series ( R81720, R81720B) transmitting modulated light over single-mode optical fiber. Such optical links allow to transmit multiple channels from the headend to other locations in the city etc.

Distinguishing features
  • internal diagnostic system
  • GaAs push-pull technology
  • microprocessor controlled AGC
  • two RF outputs (one of them can be switched off)
Name Optical node OD-120
Code R81724
Optical wavelength range 1100-1600 nm
Optical input level (AGC range) -7...2 dBm
Noise current density Max. 7.0 pA/sqrt(Hz)
Output frequency range 47-862 MHz
Output impedance 75 Ω
Return loss
18 dB / 40 MHz (-1.5 dB/octave)
Frequency response +/-0.75 dB
Output level (AGC ON, 4.9% OMI) 113 dBuV
Output level CTB (EN50083-3) 113 dBuV (42 operating channels)
Output level CSO (EN50083-3) 113 dBuV (42 operating channels)
Interstage attenuator (forward path) 0-15 dB (1dB step)
Interstage equalizer (forward path) 0-15 dB (1dB step)
Supplying voltage
187-250 VAC
Power consumption
15 W
Attenuation of the internal test connector (forward path) 20 dB (+/-0.7)
Optical connector
Test point connectors F
Operating temperature range -20...+50 oC
Dimensions 185.5x95x47 mm
Weight 1.4 kg