POLYTRON’s optical transmitters are designed to build optical distribution systems.


The optical transmitters operate with a distributed feedback laser. The senders’ control is managed with buttons and a LC display in front of the device. The output power is 4, 6, 8 resp. 20 mW.

  • DFB-laser, wavelength 1310 nm (± 10)
  • modulation: direct light intensity modulation
  • optical connectors: SC/APC
  • graphical LC display

Application:
A POLYTRON headend receives e.g. terrestrial signals, SAT signals or HDMI signals and converts the signals to DVB-C or DVB-T.
The optical transmitter OT ... DFB converts the electrical into optical signals, which can be distributed via fibre optic cables.

Technische Daten / Technical data
Typ / Type
OT 104 DFB
 
OT 108 DFB
OT 120 DFB
Artikel-Nr. / Article no.
9417050
 
9417080
9417090
Eingang
Frequenzbereich / frequency range
45-860 MHz
Eingangssignalpegel / Input signal level
15-35 dBmv (75-95 dBµV)
AGC-Bereich / AGC range
0-10 dB (MGC: 0-20 dB)
CNR
> 50 dB
CTB
> 62 dB
CSO
> 60 dB
Welligkeit / Flatness
± 0,75 dB
RF Eingangsimpedanz / RF input impedance
75 Ω
RF Rückflussdämpfung / RF return loss
≤ -15 dB
APC Präzision / APC control precision
≤ ±0,2 dB
Ausgang / Output
Laser / laser type
DFB laser
Wellenlänge / Wavelength
1310 nm (± 20 nm)
Ausgangseistung / Output power
4 mW (6 dBm)
 
8 mW (9 dBm)
20 mW (13 dBm)
Testbuchse / Test socket
-20 dB
Stromversorgung / Power supply
176-264 V~
Stromverbrauch / Power consumption
12 W
Maße / Dimensions
480 x 310 x 45 mm
Gewicht / Weight
3,6 kg