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Fiber optic tester without ends on cable...
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| Topic: | Fiber optic tester without ends on cable... This thread has 8 replies. Displaying all posts. |
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| Post 1 made on Monday March 11, 2019 at 04:22 |
King of typos Loyal Member |
Joined:
Posts: | June 2002
5,279 |
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I personally haven’t worked with fiber optic cables. But would love to know if they can be tested before any ends are put on. I’m not talking about a flashlight just to see if any are broken. It would need to be able to test the strength of the signal.
As it stands right now, it would take a person roughly 2 hours to install ends. That includes prep time, and installing 4 plugs on each end (8 all together). With hundreds of cables per sub, that can cost a lot. But at the same time, rerunning several cables cost a lot too...
Thanks,
KOT
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| Post 2 made on Monday March 11, 2019 at 08:19 |
buzz Super Member |
Joined:
Posts: | May 2003
4,371 |
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Fiber is similar to coax. One could use an Ohmmeter to check for coax breaks, but one needs a proper termination in order to make a valid assessment of bandwidth and losses.
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| Post 3 made on Monday March 11, 2019 at 08:49 |
ericspencer Active Member |
Joined:
Posts: | December 2011
536 |
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You cannot do loss testing without terminating fiber.
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Not my circus, not my monkeys |
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| Post 4 made on Monday March 11, 2019 at 11:20 |
highfigh Loyal Member |
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Posts: | September 2004
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On March 11, 2019 at 04:22, King of typos said...
I personally haven’t worked with fiber optic cables. But would love to know if they can be tested before any ends are put on. I’m not talking about a flashlight just to see if any are broken. It would need to be able to test the strength of the signal.
As it stands right now, it would take a person roughly 2 hours to install ends. That includes prep time, and installing 4 plugs on each end (8 all together). With hundreds of cables per sub, that can cost a lot. But at the same time, rerunning several cables cost a lot too...
Thanks,
KOT Look at TechLogix- they have videos showing terminations that take a few minutes, on you tube. The test kit isn't cheap, but neither is a good coax/Category validator.
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My mechanic told me, "I couldn't repair your brakes, so I made your horn louder." |
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| Post 5 made on Monday March 11, 2019 at 12:57 |
ericspencer Active Member |
Joined:
Posts: | December 2011
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On March 11, 2019 at 11:20, highfigh said...
Look at TechLogix- they have videos showing terminations that take a few minutes, on you tube. The test kit isn't cheap, but neither is a good coax/Category validator. The OP mentioned a sub ... I don't believe the military would allow the use of a mechanical fiber connector like the TechLogix products. Odds are they require the old fashioned epoxy connectors or fusion splice-on connectors
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Not my circus, not my monkeys |
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| Post 6 made on Monday March 11, 2019 at 13:25 |
thecapnredfish Senior Member |
Joined:
Posts: | February 2008
1,397 |
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And the tool. Optical time-domain reflectometer
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| Post 7 made on Monday March 11, 2019 at 13:36 |
highfigh Loyal Member |
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On March 11, 2019 at 13:25, thecapnredfish said...
And the tool. Optical time-domain reflectometer They have testers that showed at least four frequencies.
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My mechanic told me, "I couldn't repair your brakes, so I made your horn louder." |
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| Post 8 made on Monday March 11, 2019 at 14:12 |
ericspencer Active Member |
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Posts: | December 2011
536 |
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On March 11, 2019 at 13:36, highfigh said...
They have testers that showed at least four frequencies. Those are for loss testing only. An OTDR does additional testing.. [Link: exfo.com]
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Not my circus, not my monkeys |
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| OP | Post 9 made on Tuesday March 12, 2019 at 05:59 |
King of typos Loyal Member |
Joined:
Posts: | June 2002
5,279 |
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Yes, it is for a military submarine. However it’s an idea for testing cables before install and throughout the construction build. The Virginia Class submarines are actually built in sections. Roughly 20 feet long at a time. So when we have a cable that goes from a device in one section to an other. I believe it should be tested before the hauls are joined together. Sure, if a cable is deemed bad then it’ll needs to be replaced. Which is a lot easier when the hauls are separated.
Thanks for all of your help.
KOT
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