Download
1 / 53

中国通信建设第二工程局有限公司贵州维护总站 China Telecom. Constrction 2nd Engineering Co.,Ltd Guizhou Branch - PowerPoint PPT Presentation


  • 104 Views
  • Uploaded on
  • Presentation posted in: General

中国通信建设第二工程局有限公司贵州维护总站 China Telecom. Constrction 2nd Engineering Co.,Ltd Guizhou Branch. 长途光缆线路维护技术培训. ------ 仪器仪表 OTDR 部分. 中国通信建设第二工程局有限公司 贵州维护总站 2010 年 3 月. 3. 3. 3. 3. 3. 1. 3. 2. 4. 5. 内容提要. OTDR 基本知识. OTDR 的相关介绍. OTDR 的工作原理.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

中国通信建设第二工程局有限公司贵州维护总站 China Telecom. Constrction 2nd Engineering Co.,Ltd Guizhou Branch

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


China Telecom. Constrction 2nd Engineering Co.,Ltd Guizhou Branch

------OTDR

20103


3

3

3

3

3

1

3

2

4

5

OTDR

OTDR

OTDR

OTDR


OTDR

  • OTDR

  • 1

  • 2

  • OTDR

  • OTDR


OTDR

  • OTDR

    • AC/DC

    • OTDR

  • OTDR

  • OTDRG.652OTDR

    • 1

  • A1550nm 1550nm,


OTDR

  • B

  • C 3us 10us

  • D 140km 260km

  • 1.4

  • E

  • F12S 51012

    • 2

  • A

  • B


OTDR

  • C 0.10dB/km 0.10dB/km

  • D

  • E

  • F

  • G

  • H

  • I

    • 3

  • A1550nm SM

  • B1.468

  • C81


OTDR

OTDR


OTDR

  • AC/DC

  • 95%

  • 2/

  • MTS

  • 25

  • MTS30

  • 10

  • 11

  • 12

  • 13


3

3

3

3

3

1

3

2

4

5

OTDR

OTDR

OTDR

OTDR


OTDR

  • OTDR

  • AgilentANRITSUEXFOWAVETEK

  • 41AV6411 OTDR)

  • 40/39dB:

  • 1310nmL40/0.35=114KM

  • 1550nmL39/0.25=156KM

  • OTDR(

  • 1

  • 2

  • 3CPU


OTDR


3

3

3

3

3

1

3

2

4

5

OTDR

OTDR

OTDR

OTDR


OTDR

  • OTDR

  • OTDR

  • OTDR100


OTDR

OTDROTDR


OTDR

  • Rayleigh Backscatter()

  • =5Log(P0WS)-10ax(loge)

  • P0:

  • W

  • S/

  • a/

  • 1=8.686dB

  • x

  • 4


3

3

3

3

3

1

3

2

4

5

OTDR

OTDR

OTDR

OTDR


OTDR


OTDR

  • 0.08dB

1

2

3


OTDR

1

0.08dB

0.05dB

2

OTDR

3

OTDR


OTDR

4/

1.52.0

5

OTDROTDROTDR

8//

=0.25

0.258/300000000/s/1.4681100ns


OTDR

6

OTDR

SM():1550nm1.4681001310nm1.467500

MM1300nm1.487000850nm1.496000

7

OTDR

SM1550nm83.0dB1310nm80.0dB

MM ()1300nm74.0dB850nm67.0dB


OTDR

  • 8

  • OTDROTDROTDROTDR

  • 23


OTDR

1

2

3

4

5

6

7

8

9


OTDR


OTDR

1


OTDR

2


OTDR

3


OTDR

4


OTDR

5


OTDR

6

1 2 3


OTDR

7


OTDR

8


OTDR

9


3

3

3

3

3

1

3

2

4

5

OTDR

OTDR

OTDR

OTDR


1.:

2.

OTDR()

()


  • 1. OTDROTDR() OTDR()OTDR()


  • (1) La=(S1-S2)/(1+P) La;S1;S20.6-1.2;PP=(Sa-Sb)/SbSa;Sb:3-5 :10-15 (2) Ly=LbLa :Ly;Lb+- Ly


  • 2OTDR()

  • 3OTDR()


  • 4OTDR500m OTDR20km


1.

2.

3.

4.

5.


1

OTDROTDRMW9076B1m310E-5,,,,,

2

OTDROTDROTDR


3

0.01dB

4


5

A

BOTDR

C

D


11OTDROTDR 2OTDR 3OTDR25/1


2SODF


3OTDRLL = L1L2/1+PL3L4L5 1+aL1OTDRL2L3L4L5a0.5%0.7%1%PPPRh


4

5


1. 005

OTDR

LSA/2PA


  • LSA


2PA)


LSA2PA

  • LSA


2PA



ad
  • Login