Máy Phát Quang 1550Nm

Liên hệ

62 Bà Triệu, Hàng Bài, Hoàn Kiếm, Hà Nội.


Advanced type Externally Modulated Optical Transmitter

(47~862 MHz, CNR1 ≥ 53dB, SBS: 13~18dBm adj.)

Model: HT8500HC (CATV wavelength) & HT8500HU (ITU wavelength adjustable)

Product description

1550nm externally modulated optical 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.

1550nm externally modulated technology for optical transmitter has no laser chirp, low dispersion distortion, and large extinction ratio, with excellent characteristic within 40~862MHz. External Modulator doesn''''t generate CSO distortion after reasonable bias. It can be followed by amplifier when used in large area coverage of over-long trunk and local networks. Adopting WDM, multi-wavelength optical channels can be transmitted through one fiber. 1550nm optical fiber CATV follows the current development trend of triple-play and fiber to home.

Huatai is the well-known manufacture in analog externally modulated optical transmitter in the world. Huatai HT8500H that accords with current international industry technique standard is a 1550nm Externally Modulated Optical Transmitter. The whole unit light source adopts narrow bandwidth ( 0.65MHz ), low noise, continuous wave DFB laser, which is propitious to reduce the influence of dispersion. The whole unit signal modulation adopts CATV special LiNbO3 external modulator of American company and Huatai optimized control technology with independent intellectual property, so it can reach high index of back to back CNR ≥ 54dB, CTB ≤ -65dB, CSO ≤ -65dB, SBS: 13~18dBm 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.

Huatai HT8500H, advanced type externally modulated optical transmitter with it''''s high index, high reliability and excellent cost performance, is applicable for main links and distribution network links in large and middle CATV station head-end.


  • HT8525T:  2 fiber output, each port ≥ 4.5dBm, CNR ≥ 53.0dB, SBS: 13~18dBm continuously adjustable, ITU wavelength adjustable.
  • HT8527T:  2 fiber output, each port ≥ 7.0dBm, CNR ≥ 53.0dB, SBS: 13~18dBm continuously adjustable, ITU wavelength adjustable.
  • HT8529T:  2 fiber output, each port ≥ 8.5dBm, CNR ≥ 53.0dB, SBS: 13~18dBm continuously adjustable, ITU wavelength adjustable.
  • HT85210T:  2 fiber output, each port ≥ 10dBm, CNR ≥ 53.0dB, SBS: 13~18dBm continuously adjustable, ITU wavelength adjustable.
  • HT8500HU: ITU standard wavelength adjustable. User can adjust and set the laser wavelength within ±200 GHz (±1.6nm) at ±0.05nm space by LCD menu or buttons on the front panel. Apply to WDM network upgrade and expansion.

Product features


  • High performance: Externally modulated technology, no laser chirp, low dispersion distortion, high extinction ratio, with excellent characteristic within 40~862 MHz.
  • 1+1 powers supply back, up hot-plug function available.
  • Narrow bandwidth (0.65 MHz), lower noise, DFB continuous wave laser, is propitious to reduce the influence of the dispersion.
  • The operating bandwidth is up to 47~1080 MHz.
  • CNR ≥ 53dB and excellent CTB, CSO index.
  • SBS: 13~18dBm adjustable.
  • ITU standard wavelength, ±200 GHz (±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.
  • Casing temperature auto-control.
  • Excellent P/P ratio.

Main application


  • Used in main links and distribution network links in large and middle CATV station head-end.
  • - Analog digital hybrid transmission > 200Km (with dispersion compensation).
  • - Pure digital transmission: (without dispersion compensation) > 400Km, (with dispersion compensation) > 700Km.
  • HT8500HU ITU wavelength adjustable, applicable to the value-added service of DWDM fiber optic CATV system and CFG dispersion compensation system.
  • It can be used in branch FTTH that has high system index demand. Point to Point > 65Km, CSO ≤ -65dB. It can provide high qualified and reliable value-added service such as RFTV, IPTV and VOD for the secondary users. It can also avoid the limitation of CSO deterioration and transmission distance caused by laser chirp for adopting 1550nm direct modulated optical transmitter.

Application cases

Network application


  • HT8500H is typically used in the sub-station full optical relay for spotting local program and providing IPTV, VOA value-added business.

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  • Applied in second transmission of sub-station (FTTx), supply with IP/QAM, VOD VAS

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Technical index


Performance

Index

Supplement

Optic feature

Operating wavelength

(nm)

1548~1563

HT8500HC

ITU-TG.692

HT8500HU

Wavelength ADJ. range

(nm)

±1.6 ( ±200GHz )

HT8500HU

Wavelength ADJ. mode

 

±0.05nm stepping

HT8500HU

Wavelength stability

(Pm/ºC )

-1~0

Tc=20~70℃

Linewidth

(MHz)

Typ.=0.65

FWHM (△λ) (-3dB fullwidth)

Side mode suppression ratio

(dB)

≥45

SMSR

Equivalent noise intensity

(dB/Hz)

≤-160

RIN (20~1000MHz)

Number of output port

 

2

 

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 fiber connector

 

SC/APC

Optional LC/APC,FC/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

PAL-D/99CH

 

CNR1

(dB)

≥53.0

≥51.5

Back to back

CNR2

(dB)

≥51.5

≥49.5

65Km optical fiber, 0dBm receive

CTB

(dB)

≤-65

≤-65

 

CSO

(dB)

≤-65

≤-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

30~72

Power Consume

(W)

≤50

Single power works

Work temp.

(ºC)

0~50

Machine temp. control automatically

Storage temp.

(ºC )

-40~85

 

Operating relative humidity

(%)

5~95

 

Size (W)x(D)x(H)

(")

19×14.5×1.75

S-Type

19×17.9×1.75

L-Type

Product series


Model

Number of output port

Output power of each port

Operating wavelength  (nm)

SBS Restrain (dBm)

System index (59 routes PAL-D)

CNR1

CNR2

CTB

CSO

HT8525HC

2

≥4.5

1548~1563

13~18
Adjustable

≥53

≥51.0

≤-65

≤-65

HT8527HC

2

≥7.0

≥53

≥51.5

≤-65

≤-65

HT8529HC

2

≥8.5

≥53

≥51.5

≤-65

≤-65

HT85210HC

2

≥ 10

≥53

≥51.5

≤-65

≤-65

HT8525HU

2

≥4.5

1528~1563nm
ITU wavelength ADJ.

≥53

≥51.0

≤-65

≤-65

HT8527HU

2

≥7.0

≥53

≥51.5

≤-65

≤-65

HT8529HU

2

≥8.5

≥53

≥51.5

≤-65

≤-65

HT85210HU

2

≥ 10

≥53

≥51.5

≤-65

≤-65

Test condition: CNR1: Tx to Rx, 0dBm receiving. CNR2: 16dBm EDFA  (NF4.5~5.5dB),  65km fiber, 0dBm receiving.


Bình luận

HẾT HẠN

0439 449 539
Mã số : 2854621
Địa điểm : Hà Nội
Hình thức : Cần bán
Tình trạng : Hàng mới
Hết hạn : 31/12/2020
Loại tin :

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