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Hangzhou Huatai Optic Tech. Co., Ltd.

Wavelength Adjustable Transmitter, Catv Transmitter, Optical Transmitter manufacturer / supplier in China, offering Top-Class Itu Wavelength Adjustable CATV Optic Transmitter, Fttp FTTH CATV Optical Receiver (P9128G), FTTH 47~862MHz Mini CATV Optical Receiver (H9122) and so on.

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Top-Class Itu Wavelength Adjustable CATV Optic Transmitter

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Min. Order: 1 Piece
Transport Package: 54x64x14cm
Payment Terms: T/T

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Basic Info
  • Model NO.: HT8500T
  • Feature: Externally Modulated
  • Work Bandwidth: 47~862MHz
  • CTB: </=-65dB
  • Sbs: 13~19dBm
  • Approved: 3rd Part Certification
  • Specification: 1u
  • Name: 1550nm Optical Transmitter
  • Operating Wavelength: Itu-Tg.692 Standard Wavelength
  • Cnr: >/=54dB
  • Cso: </=-65dB
  • Certification: CE
  • Trademark: Guangtai
  • 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).
Huatai 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)
Product Groups
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