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