1550nm External Transmitter

1550nm External Fiber Optic Transmitter

 

1550nm External Fiber Optic Transmitter is the core equipment in the RFTV network system. RFTV is a unidirectional analogue and digital video broadcast. It adopts high efficiency modulation mode for RF carrier wave and its economy, flexibility and bandwidth validity is beyond comparison of IPTV. By adopting EPON, GEPON or P2P access mode to realize triple-play and FTTx, RFTV broadcasting network in 1550nm optical wavelength still plays an important role.

 

 

Technical parameters

 

 

Performance			Index	Supplement
Optic feature	Operating   wavelength	(nm)	1548~1563	ST1550EC
			ITU-TG.692	ST1550EU
	Wavelength   ADJ. range	(nm)	±1.6(±200GHz)	ST1550EC
	Wavelength   ADJ. mode		±0.05nm stepping	ST1550EU
	Wavelength   stability	(Pm/℃)	-1~0	Tc=20~70℃
	Linewidth	(MHz)	Typ.=0.65	FWHM(△λ), (-3dB   fullwidth)
	Side   mode suppression ratio	(dB)	≥45	SMSR
	Equivalent   noise intensity		≤-160	RIN(20~1000MHz)
	Number   of output port		2	Optional4,6
	Output   power	(dBm)	10,   8.5, 7.0, 4.5	2×7, 2×9, 2×10, 2×5, 4×7,6×7
	Return   loss	(dB)	≥50
	Optical  connector		FC/APC	Optional   SC/APC, LC/APC
RF    feature	Work   bandwidth	(MHz)	47~862
	Input   level	(dBmV)	18~28	AGC
	Flatness	(dB)	≤±0.75	47~862MHz
	Return   loss	(dB)	>16
	Input   impedance	(Ω)	75
	RF   port		F-Female
Link feature	Transmit   channel		PAL-D/60CH
	CNR1	(dB)	≥53.0	Back   to Back
	CNR2	(dB)	≥51.5	65Km   optical fiber, 0dBm receive
	CTB	(dB)	≥-65
	CSO	(dB)	≥-65
	SBS   restrain	(dBm)	13~18	Adjustable
General feature	SNMP   network management interface		RJ45
	Communication   interface		RS232
	Power   supply	(VAC)	90~265	50/60Hz
		(VDC)	-48	30~72VDC
	Power   consume	(W)	50	Single   power works
	Work   temp.	(℃)	-5~65	Machine   temp. control automatically
	Storage   temp.	(℃)	-40~85
	Operating   relative humidity	(%)	5~95
	size	(")	19×14.5×1.75	S-Type
			19×17.9×1.75	L-Type

 

 

PRODUCT FEATURE 

• High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz. 

• Narrow bandwidth (0.65MHz), lower noise, DFB continuous wave laser, is propitious to reduce the influence of the dispersion. 

• The operating bandwidth is up to 47~862MHz (47~1080MHz). 

• CNR ≥ 53dB and excellent CTB, CSO index. • SBS: 13~18dBm adjustable. 

• ITU standard wavelength, ±200GHz (±1.6nm) adjustable. 

• AGC/MGC mode is optional at spot. OMI can be optimized at spot. 

• Perfect RS232 communication interface. 

• Advanced SNMP network management function. 

• 1+1 power supply backup, switch automatically. 

• Casing temperature auto-control. 

• Excellent P/P ratio.

 

Application

 

 

Company information

 

 

 

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