The WIT-750 Fiber Optic CATV Transmitter uses a DFB laser diode as light source, converting the RF CATV modulation (AM-VSB) into optical signals which are transmitted through optical fibers, then converted back to RF signals through the receivers. The RF signals are then distributed to the end users. The main applications are as follows ：
Headend broadcasting Headend to headend program exchange Transmission of video and sound through Hybrid Fiber Coaxial (HFC) networks
In order to achieve maximum performance and confidence by the customer, we detail the characteristics, applications, and operating instructions in the following chapters. We expect to satisfy the needs of the customer and provide quality service.
Features
19”/1U rack mount Frequency Range: 45~870MHz High linear pre-distortion circuits 13 dBm –18 dBm SBS suppressing for Multi-configuration of fiber network Status monitoring interface compatible with SNMP-protocol AGC/MGC mode switchable RS485 control interface
SPECIFICATIONS
OPTICAL Parameters
Laser type
1550nm DFB LD
Wavelength
1550±10nm
Connector
SC/APC, FC/APC(optional)
Output power
> 7 dBm
Optical output port
2 output ports
SBS suppressing
13dBm, 16dBm, 18dBm
RF Parameters
Input level
15 to 25 dBmV/ch @77 NTSC channels loading
Gain control range
10 dB
Input impedance
75
Return loss
<-16dB
Connector type
F type
Frequency Range
45 ~ 870 MHz
Flatness
± 0.75 dB
Channel loading
77 NTSC or 60 PAL channels +200 or 300 MHz digital channels
Headend broadcasting
