External Modulated CATV Transmitter

Features:

• 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 high standard
• Perfect SBS suppress circuit and variable SBS in 13, 16, and 18, suitable for different types of CATV 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 displaying, 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 alert
• The transmitter provides RJ45 and RS232 standard interface for the connecting the computer and monitoring
  

Specifications:

Parameters		Specifications
Optical	Wavelength (nm)	1550±10
	Laser Type	DFB
	Modulation Mode	External Modulation
	Output Power (dBm)	1×7 or 1x5, 1x6, 2x7, 1x9, 2x5, 2x6, 2x9
	Optical Return Loss (dB)	≥60
	Connector Type	FC／APC (Interchangeable with SC/APC)
RF	Bandwidth (MHz)	45 ~ 862
	Input Level (dBuV)	83±5 (AGC)
	Flatness (dB)	≤±0.75 (45 ~ 862MHz)
	Return Loss (dB)	>16 (45 ~ 750MHz)
	Input Impedance (Ω)	75
Link	CNR (dB)	≥52 (65km fiber receiver 0 dBm)
	CTB (dB)	≥65
	CSO (dB)	≥65
	SBS (dBm)	≥16.0 (12 ,16, 18)
General	Net Interface	RJ45, RS232
	Power	90 ~ 265 VAC or -48 VDC
	Power Loss (W)	≤50
	Working Temp. (°C)	0 ~ 50, with automatically shell temp control
	Storage Temp. (°C)	-20 ~ 85
	Working Relative Humidity	20% ~ 85%
	Dimensions (mm)	483 (W) x 381 (D) x44 (H)

Note: For the necessity of improvement, the material contained in this document is subject to change without notice.