Standard Type CATV 1550nm Externally Modulated Optical Transmitter HT8500A

1. 1550nm Optical transmitter 2. Narrow bandwidth 3. SNMP management 4. Low dispersion distortion 5. 1+1 backup power supply HT8500AC(CATV wavelength)HT8500AU(ITU wavelength adjustable)Standard type CATV 1550nm Externally Modulated Optical Transmitter(47~862MHz, CNR1≥53dB, SBS: 13, 16, 18dBm adj.) 1550nm externally modulated optical transmitter is the core equipment in this system. It adopts high efficiency modulation mode for RF carrier wave and its economy, flexibility and bandwidth validity is beyond comparison of IPTV. Adopting EPON or P2P access mode to realize triple-play, FTTx , RFTV broadcasting network in 1550nm optical transmitter wavelength still plays an important role.Huatai is the well-known manufacture in analog externally modulated optical transmitter in the world. HT8500A, an economical 1550nm Externally Modulated Optical Transmitter, is produced specially for middle and small CATV station. Optical transmitter adopts narrow bandwidth (Typ.=1MHz), low noise and continuous wave DFB laser as the light source. With 47~862MHz bandwidth, CNR ≥ 53dB, CTB ≤ -65dB, CSO ≤ -65dB, SBS: 13, 16, 18adjustable, Optical transmitter can make CATV network transmit video, audio and data with high performance. The machine is equipped with perfect RS232 communication interface, SNMP network management and 1+1 backup power supply. Product featuresHigh performance: Externally modulated technology for optical transmitter, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz in-band.Narrow bandwidth (Typ.=1MHz), lower noise, DFB continuous wave laser.The operating bandwidth is up to 47~1080MHz.Perfect index: Unique innovation technology, provide excellent CNR, CTB, CSO & SBS.ITU standard wavelength adjustable, the user can adjust and set the laser wavelength on the front-panel with ±0.05nm stepping in the range of ±200GHz (±1.6nm), used in the network upgrading and expansion of WDM system.AGC/MGC mode is optional at spot. OMI can be optimized at spot.Perfect RS232 communication interface.SNMP network management function optional.1+1 backup power supply optional.Casing temperature auto-control.Excellent P/P ratio. Technical index 

Performance			Index		Supplement
Optic feature	Operating wavelength	(nm)	1540~1563		HT8500AC
			ITU-TG.692		HT8500AU
	Wavelength adjustable range	(nm)	±1.6 (±200GHz)		HT8500AU
	Wavelength adjustable mode		±0.05nm stepping		HT8500AU
	Linewidth	(MHz)	≤1		FWHM
	Side mode suppression ratio	(dB)	≥45		SMSR
	Equivalent noise intensity	(dB/Hz)	≤-160		RIN (20~1000MHz)
	Output power	(dBm)	2×5		Optional 2 ×3, 2 ×6, 2 ×7, 2×9
	Return loss	(dB)	≥60
	optical fiber connector		SC/APC		Optional FC/APC, LC/APC
RF feature	Work bandwidth	(MHz)	47-862		47~1000, 47~1080 optional
	Input level	(dBmV)	18~28		AGC
	Flatness	(dB)	≤±0.75		47~862MHz
			≤±1.5		862~1000MHz (Optional)
	Return loss	(dB)	>16
	Input impedance	(Ω)	75
	RF port		F-Female
Link feature	Transmit channel		PAL-D/60CH	PAL-D/99CH
	CNR1	(dB)	≥53.0	≥51.5	Back to back
	CNR2	(dB)	≥51.5	≥50	50Km optical fiber, 0dBm receive
	CTB	(dB)	≤-65	≤-65
	CSO	(dB)	≤-65	≤-65
	SBS restrain	(dBm)	13,16, 18 1		Adjustable
General feature	SNMP network management interface		RJ45
	Communication interface		RS232
	Power supply	(VAC)	90~265		50/60Hz
		(VDC)	-48		30~72
	Power Consume	(W)	≤50		Single power works
	Work temp.	(°C)	-5~65		Machine temp. control automatically
	Storage temp.	(°C)	-40~85
	Operating relative humidity	(%)	5~95
	Size (W)x(D)x(H)		19×14.5×1.75 ( " )483×368×44 ( mm )

Remark: 1.SBS=18dBm, EDFA 18dbm output fiber, port to port <40km

Standard Type CATV 1550nm Externally Modulated Optical Transmitter HT8500A