1550nm External Optical Transmitter
This series internal-modulated transmitter performs RF-to-optical signal conversions in 1550nm transmission link.
1U 19’ standard case with liquid crystal display (LCD/VFD) in front panel;
Frequency bandwidth: 47—750 / 862MHz;
Output power from 4 to24mw;
Advanced pre-distortion correction circuit;
AGC/MGC;
Automatic power control (APC) and Automatic temperature control (ATC) circuit.
Feature Both the external modulator and laser are imported from the United States or Japan.
Perfect pre-distortion circuit ensures the best CTB and CSO when the CNR is in highstandard.
Perfect SBS suppress circuit and adjustable SBS in 13,16, 18，suitable for different types ofCATV net.
AGC control.
Internal double power which can be changed automatically.
Automatically shell temperature control.
Internal microprocessor software has the function of laser monitoring, parameter display, fault warning, net management and so on. Once the working parameter of the laser goes out of the fixed value of the software, the machine will warn.
The transmitter provides RJ45 and RS232 standard interface for the connecting the computer and monitoring.
Technique Parameter
Items
Unit
Technique Parameters
Output Optical Power
dBm
3
4
5
6
7
8
9
10
Optical Wavelength
nm
1550±10 or ITU wavelength
Laser Type
DFB Laser
Optical Modulating Mode
Directly Optical Intension Modulation
Optical Connector Type
FC/APC or SC/APC
Frequency Range
MHz
47~862
Input Level
dBμV
72~88
Flatness in Band
dB
±0.75
Input Impedance
Ω
75
Input Return Loss
dB
≥ 16(47~550)MHz;≥ 14(550~750/862MHz)
C/CTB
dB
≥ 65
C/CSO
dB
≥ 60
C/N
dB
≥ 51
AGC Controlled Range
dB
±8
MGC Controlled Range
dB
0~10
Supply Voltage
V
AC 160V~250V(50 Hz)
Power Consumption
W
30
Operating Temperature
℃
0 ~+45
Storage Temperature
℃
-20 ~+65
Relative Humidity
%
Max 95%No Condensation
Dimension
mm
483(L)X 380(W)X 44(H)
Application FTTH network CATV network
