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What does IP67 stands for?

12/5/2016

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IP stands for International Protection or Ingress Protection marking  as defined by International Standard IEC 60529 classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). The equivalent European standard is EN 60529.

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for example IP67 signifies the enclosure is protected against dust and water as per IP rating code indicated below.

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1.25mm or 2.50mm adapter cleaner sticks 

12/2/2016

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The fiber optics connectors or adapters has been identified one of the major causes of fiber optics system failure or error. This is due to dust blocking the laser light or dust accumulated in the adapters.
The fiber optics connectors need to be thoroughly cleaned using alcohol isoprophyl before being connected into the system or using any other proper cleaning tool and fiber optics adapters are also occassionally  need to be thoroughly cleaned using adapter cleaner sticks. ​
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December 2,  2016

8/5/2016

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Have been quite sometime this blog has not been updated.
Please come back soon next week with more fiber optics news.
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Fiber Optics Current Sensors for High Voltage Application

1/4/2016

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Mechanical Splicing

9/20/2015

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Almost perfect fiber optics single mode mechanical splicing
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Larger photo of mechanical splicing
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OTDR with different settings of Pulse Width
Refer to previous posting of Pulse Width

At Pulse Width 3ns
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At Pulse Width 20ns
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At Pulse Width of 100ns 
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At Pulse Width 1micronsecond
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Tube Cutter

9/20/2015

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Fiber Optics cable preparation handy tool 
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OTDR Ghost

9/18/2015

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In the change from glass to air, energy reflected back to the OTDR is of such intensity that the light pulse is reflected off of the connector at the OTDR and is again returned a second time. As the OTDR converts the travel time of the light pulse into distance, the reflective event is painted on the screen a second time—thus, a ghost. - Charles Lohrman
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Transmitter, Receiver, Transceiver

8/20/2015

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Fiber Optics Network
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Transmitter
A network device that convert incoming electrical signal into optical signal for transmisson down an optical fiber link.

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Data, voice and video are digitized and converted into electrical signals which pass through Fiber Optics Transmitter and converts electrical signals into an optical signal output.

Receiver
A network device that converts an incoming optical singal into an electrical signal for transmission down an electrical link.
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Optical signal which pass through Fiber Optics Receiver converts optical signals into an electrical  signal output.

Transceiver
Transceiver is a combination of both fiber optics transmitter and receivers into one component. 
It is commonly called Small Form Factor Pluggable Transceiver or SFP.
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OTDR Set-Up - Averaging

8/7/2015

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All OTDRs regardless of brand have four basic setup requirement i.e. the OTDR user is required to key in these four basic data parameters into OTDR in order to get good and accurate fiber trace analysis.

The required data parameters are :-
  1. Testing Range - Refer Article HERE
  2. Pulse Width - Refer Article HERE
  3. Index of Refraction - Refer Article HERE
  4. Averaging Time
What is Averaging ?
Averaging refers to time taken to have a good OTDR traces as shown below.


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However, the longer averaging time would provide better OTDR traces but it wil be time consuming for OTDR to provide such traces.

The before averaging  or low averaging is sufficient should the end-user only interested to find out the approximate fiber optics link distance.
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The about right averaging is able to provide good measurement loss.
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The higher averaging time provides better OTDR traces but OTDR takes extra times to do the averaging and display better traces.
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The end-user is required to set the averaging time in order to get good  test measurement results
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OTDR Set-UP - Pulse Width

7/16/2015

4 Comments

 
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All OTDRs regardless of brand have four basic setup requirement i.e. the OTDR user is required to key in these four basic data parameters into OTDR in order to get good and accurate fiber trace analysis.

The required data parameters are :-
  1. Testing Range - Refer Article HERE
  2. Pulse Width
  3. Index of Refraction - Refer Article HERE
  4. Averaging Time - Refer Article HERE
What is Pulse Width?
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  • OTDR pulse width determines length of fiber that can be measured before OTDR traces become noise.
  • Larger pulse width provides larger dynamic range 
  • Narrow pulse width provides reduced dynamic range. 
  • Dynamice range is associated with pulse width and in turn describes length of fiber that can be measured by OTDRs.
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  • Always start testing with a shorter pulse width. 
  • The shorter pulse width is useful for locating any faults that may otherwise be hidden in longer pulse width.
  • A gradual increase in pulse width is necessary to prevent two or more faults from overlapping.

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Rule of Thumb
Long pulse width for longer fiber distance.
Short pulse width for shorter fiber distance.
Always start with shorter pulse width and gradually increase the pulse width to detect all possible fault traces.
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    Author

    I have been in the field of fiber optics since early 1990s.  I gained fiber optics skills and knowledge via my working experience as end-user, main contractor and sub-contractor and finally as an optical fiber enterpreneur.
     

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    • 2-Hari Fiber Optik Praktikal (BM)
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  • PRODUK
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    • Accessories >
      • Pigtails
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  • ARTIKEL
    • Safety In Fiber Optics
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    • Anggaraan / Bidaan
    • My Blogs >
      • Biz Blog (In Malay)
    • Training Benefits
    • Auditing Fiber Optics
    • Langkah Sulung Biz Fiber Optik