Top-Class Itu Wavelength Adjustable CATV Optic Transmitter

• Certification: CE
• Name: 1550nm Optical Transmitter
• Feature: Externally Modulated
• Operating Wavelength: Itu-Tg.692 Standard Wavelength
• Work Bandwidth: 47~862MHz
• Cnr: >/=54dB
• Model NO.: HT8500T
• CTB: </=-65dB
• Cso: </=-65dB
• Sbs: 13~19dBm
• Approved: 3rd Part Certification
• Transport Package: 54x64x14cm
• Specification: 1u
• Trademark: AITC
• Origin: China

Product Description

HT8500T (47~1080MHz, CNR1≥ 54dB, SBS: 13~19 adjustable)
1550nm Top-class ITU wavelength adjustable Externally Modulated Optical Transmitter

Product description

HT8500T is a series of 1550nm externally modulated optical transmitter achieving the highest standards of today. The EM optic transmitter can reach high index of back to back CNR ≥ 54dB, CTB ≤ -65dB, CSO ≤ -65dB, SBS: 13~19dBm continuous adjustable. The whole unit is equipped with perfect RS232 communication interface, SNMP network management, 1+1 back-up power supply, hot-plug function available, chassis temperature auto-control. All the optical port of EM optic transmitter can be installed in the front panel (The back panel is also available if needed).
AITC HT8500T, top type externally modulated optical transmitter with it's high index, high reliability and excellent cost performance, is applicable for the over-long trunk of large and middle CATV station head-end, WDM system and CFG dispersion compensation system.

HT8527T: 2 fiber output, each port ≥ 7.0dBm, CNR ≥ 54.0dB\SBS: 13~19dBm
Continuously adjustable\ITU wavelength adjustable.
HT8529T: 2 fiber output, each port ≥ 8.5dBm, CNR ≥ 54.0dB\SBS: 13~19dBm
Continuously adjustable\ITU wavelength adjustable.
HT85210T: 2 fiber output, each port ≥ 10dBm, CNR ≥ 54.0dB\SBS: 13~19dBm
Continuously adjustable\ITU wavelength adjustable.
HT85212T: 2 fiber output, each port ≥ 12dBm, CNR ≥ 54.0dB\SBS: 13~19dBm
Continuously adjustable\ITU wavelength adjustable.
HT85213T: 2 fiber output, each port ≥ 13dBm, CNR ≥ 54.0dB\SBS: 13~19dBm
Continuously adjustable\ITU wavelength adjustable.

Product features
1. Externally modulated technology for HT8500T optical transmitter, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862MHz, used in the over-long trunk of large and medium sized cable television head-end.
2.1+1 powers supply back, up hot-plug function available.
3. Narrow line width (Typ=0.3 MHz), low noise, and DFB continuous wave laser, be propitious to reduce dispersion effect.
4. The work bandwidth for HT8500T optic transmitter is up to 47~1080MHz.
5. CNR ≥ 54dB and excellent CTB, CSO index.
6. SBS: 13~19dBm, continuous adjustable.
7. ITU standard wavelength adjustable, users can adjust and set the 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.

Main application
1. Used in the over-long trunk and distribution net in the large and middle cable television central station head-end.
A)Analogue digital hybrid transmission > 200Km (with dispersion compensation).
B)Pure digital transmission (Without dispersion compensation) > 400Km,
(With dispersion compensation) >700Km.
2. VAS in DWDM fiber CATV system
3. CFG dispersion compensates system.

Application cases
1.255Km PAL-D/56CH & 20CH Digital QAM Hybrid Transmission Application Cases
2.587Km pure digital TV 1550nm overlength optical trunk application Cases
3. FTTH application diagram

Performance			Index			Supplement
Optic feature	Operating wavelength	(nm)		ITU-TG.692 standard wavelength
	Wavelength ADJ. range	(nm)		±1.6			±200GHz
	Wavelength ADJ. mode			±0.05nm stepping
	Wavelength stability	(Pm/ºC)		-1~0			Tc=20~70ºC
	Linewidth	(MHz)		Typ.=0.35			FWHM(Δλ), (-3dB full width)
	Side mode suppression ratio	(dB)		≥45			SMSR
	Equivalent noise intensity	(dB/Hz)		≤-160			RIN (20~1000MHz)
	Number of output port			2
	Output power	(dBm)		2×10			Optional 2×7, 2×9, 2×11
	Return loss	(dB)		≥50
	Optical fiber connector			SC/APC			Optional FC/APC, LC/APC
RF feature	Work bandwidth	(MHz)		47-1000			HT8500T-100
				47-1080			HT8500T-108
	Input level	(dBmV)		18~28			AGC
	Flatness	(dB)		≤±0.75			47~1000MHz
				≤±1.5			1000~1080MHz
	Return loss	(dB)		>16
	Input impedance	(Ω)		75
	RF connector			F-Female
Link feature	Transmit channel			PAL-D/60CH	PAL-D/99CH
	CNR1	(dB)		≥54	≥52.5		Back to back
	CNR2	(dB)		≥52.5	≥50.5		65Km optical fiber, 0dBm receive
	CTB	(dB)		≤-65	≤-65
	CSO	(dB)		≤-65	≤-65
	SBS restrain	(dBm)		13~19			Adjustable
General feature	SNMP network management interface			RJ45
	Communication interface			RS232
	Power supply	(VAC)		90~265VAC			50/60Hz
		(VDC)		-48			30~72
	Power Consume	(W)		≤50			Single power works
	Operating temp.	(ºC)		0~50			Machine temp. control automatically
	Storage temp.	(ºC)		-40~85
	Operating relative humidity	(%)		5~95
	Size	(")		19×14.5×1.75			(W)x(D)x(H)