Downstream Optical Transmission Module GFB8xxxSM/A/C

RF input signal level dynamic range: 72~95 dBuV; AGC, automatic control exciter modulation level; Plug-in Module design,

Feature

1.      RF input signal level dynamic range: 72~95 dBuV;

2.      High-quality predistortion optical transmission module, RF   amplifier module;

3.      AGC, automatic control exciter modulation level;

4.      MGC/ AGC, selectable;

5.      Both MGC and  AGC modes support alarming  function, convenient maintenance;

6.      Advanced national standard network module, remote control, intelligent management;

7.      Automatic protection with red lamp alarming while RF  input level exceeding the limited range;

8.      Module design, plug-in installment;

9.      Tilt design, convenient and reliable connection;

10.      Adopt high heat transfer aluminum alloy coat comb shaped  radiator ensures the heat dissipation in time;

11.      Advanced gold plating RF connector.

Technical Specification

item	parameter	Remark
Exciter type	DFB exciter
Output optical wave length	1310 nm±20 nm	SJ/T10663-1995
Optical modulation	Direct optical intensity modulation
Output optical power	4 mW~25 mW 4 mW~20 mW(C)	Selectable
Optical connection	SC/APC	FC/APC
Frequency range	47 MHz~862 MHz
RF input signal level	72 dBuV~95 dBuV	The nominal  value is different
C/N	≥51 dB	59 or 84 PAL-D Analogy TV Channels (selectable)
C/CTB	≥65 dB(67,M)
C/CSO	≥61 dB(63,M)
Flatness	±0.75 dB
RF input reflection loss	≥16 dB	GB/ T11318.1
RF input impedance	75Ω
RF connector type	F

Downstream Optical Transmission Module GFB8xxxSM/A/C