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Anonymous Poster #1

ODTR Test

02/26/2013 1:24 AM

Dear All

I have carry out ODTR test for my optic cable at home about 20M length both splice with Fusion splicing.

my concern is after the OTDR and print out the report i am getting this value ???

below is the detail of the report result.

Feature #/type 1/N 2/E?

Location (km) 0.0912 0.1855

Event(dB) ?? ??

Event (dB-km) ?? ??out of range

Loss(dB) ???.??(2P)

Any advise.

Regard

Moh'd
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Kilowatt0
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Join Date: Aug 2007
Location: Earth - I think.
Posts: 2143
Good Answers: 165
#1

Re: ODTR Test

02/26/2013 10:19 AM

ODTR or OTDR? You use both in your post. Presuming you mean OTDR (Optical Time Domain Reflectometer), check the specs on the instrument. You are most likely testing a cable that is too short for that model. 20 meters probably falls within the "blanking pulse" area, which is why you are seeing the "out of range" results.

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Anonymous Poster #1
#2
In reply to #1

Re: ODTR Test

02/28/2013 9:45 AM

Dear All

For the OTDR testing of F.O cable what is the minimum length of cable to be test.

REgard

Moh'd (Kuwait)
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Kilowatt0
Guru

Join Date: Aug 2007
Location: Earth - I think.
Posts: 2143
Good Answers: 165
#3
In reply to #2

Re: ODTR Test

02/28/2013 10:02 AM

Well according to this article: http://en.wikipedia.org/wiki/Optical_time-domain_reflectometer , anywhere from 0.15 meters to 15 kilometers. It depends upon the accuracy of the OTDR meter. That is why I wrote "check the specs for that instrument".

I can't Read The Frickin' Manual from here; so you are going to have to do it yourself.

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