Kevin: I find your videos incredibly helpful...i work for a Telco in Saskatchewan, Canada...we're trying to train up new staff to use EXFO's awesome tools...to test 100Gbps backbone links
Darrell, I apologize for the delay I am not sure why I did not respond. I hope the training is going well for the new staff. It is amazing how much bandwidth we are pushing around.
@kevin.Peres is it important to use a sizable launch cable when looking for faults in a fiber loop of less than 4000 ft? I’m troubleshoot shorter residential or business loops. We are running ASE or gpon.
Bob, Sorry for the delay. Launch cable length is always an important consideration. For such short links you could get away with a shorter launch cable. If everything is good you should only be using 3-5ns. Assuming you are not testing through the splitter. You can use this formula to determine minimum launch cable length. Pulse width in (ns) divided by 10. Convert to meters and multiply by 2. Example: 1 μs -> 1000ns / 10 -> 100m x 2 = 200 meter -> Appropriate launch cable (multiplying the distance times 2 is to add margin for the pulse to recover you can safely go down to 1.5 times)
Your welcome. IOLM just like OTDR is limited by dynamic range. If you look up the specs on OTDR/iOLM if the dynamic range is 38dB. You then remove 5dB for noise and I like to remove another 2 as margin you end up with 31dB of loss you can test.
David I apologize I do not check my comments often. I need to do a better job. Is this something you are still interested in? This is not an official EXFO site just a place i put videos to test them.
Hi Eng Kevin Thank You for You efforts but Would I Ask you question about inspection Fiber Please Tell devices you are using ? And it is function is cleaning tool actauly or just verify dirty of fiber Please explain more
Salah my friend. I used the FIP-435B which is a fiber inspection probe. To clean I prefer a hybrid wet to dry method. Cleaning fiber connectors is instrumental in the performance of an optical network.
As usual, thanks for the awesome video. Two questions: 1. Does iOLM requires APC connector? 2. Is iOLM feature upgradable on any EXFO's iOLM ready OTDRs? Sorry for having a lot of questions. Received our MAX720C recently. And currently exploring it. Thanks Kevin
No worries about the questions. It is recommended to have an APC connector on the OTDR if you want to enable iOLM. Most of our test sets ship with APC connectors it gives us much better performance. If your unit says it is iOLM ready then it would just need a simple software key to enable it. If you have a UPC connector on the unit it can be replaced with an APC and upgraded to iOLM. Give the free trial of iOLM a shot. I am going to create a video talking about the new features of iOLM that include short fast and Medium link configurations under the Optimode setting in iOLM.
Hi Kevin, Thanks for video. it gives more information about iOLM in iOLM, if there is a splitter of 50:50 after certain distance, how iOLM shows the link view ? I mean does software shows both out put after that splitter or only one?
Jenson, You are very welcome. If you are testing from the OLTS through the splitter you will only see one composite trace. Same with an OTDR. Depending on the dynamic range of the OTDR you will be measuring all the ports but folded on to one trace. What you will see is the loss from the splitter lets say a 1x32 you will have approx 17dB of loss if you have multiple ports used on the splitter depending on the distance from the splitter you will see a connection for the end of each drop. With APC connectors it may look like a splice if it has low reflection. I hope that answers your question.
Do I need to use a longer launch for iOLM test?? Am using 20M patch now and its all passing but some panel ports are failing, while testing with 500M its all passing. Pls advise
iOLM with its multipulse acquisition method does require a shorter launch cable. 20M, for the most part, is fine but as the connector degrades on either the launch cable or the iOLM port you will start to get experience traces that require longer PW, or the reflection from the contaminated port will start to affect the deadzone and this would affect shorter launch cables. It could also be with a 500M launch cable it is using a longer PW to test through the launch and you are losing spacial resolution. I would have to look at the traces to be sure. When you next test with iOLM check your launch conditions. Select the first element that is your launch. Make sure the loss is below 0.5 and the reflection in in the low -60dB or better.
I noticed my EXFO OTDR is set up for the green APC(angled tip) connection...... but blue SC (squared or flat) also seems to work. Should I be concerned with this interface? Is using an adapter crucial
@@KevinPeres Thank you very much. Does the APC connection match in a keyed fashion in other words does the short side of one connector meet the long side of the other connector? Or are they just floating and the angle attitude doesn't matter. Thanks
@@dizzolve They are keyed. The orientation is important. The angle is typically 8 degrees if you look straight down at the connector with the key up you will notice the slight angle.
Hi Kevin, this is a great video! Just to ask if we can use this video as a training material reference? don't worry we don't get money on this, just a training reference only :)
Sorry for the slow response. Are you talking about the loss associated with the change in index of refraction? or loss from refraction say off the cladding?
Hello, reach out to our sales group at sales@exfo.com. Give them your SN and contact information and tell them you would like to speak to a local representative to discuss adding iOLM. Let me know if you have any questions.
Had a two hour class with this guy today via the internet learned quite a bit, very knowledgeable and helpful guy!
You said you would respond ! I appreciate the kind words
Kevin: I find your videos incredibly helpful...i work for a Telco in Saskatchewan, Canada...we're trying to train up new staff to use EXFO's awesome tools...to test 100Gbps backbone links
Darrell, I apologize for the delay I am not sure why I did not respond. I hope the training is going well for the new staff. It is amazing how much bandwidth we are pushing around.
Great information, very well done.
Great video, Kevin! Thank you so much for creating a videos like this.
My pleasure!
how do i activate the laser for the power meter. thank you
Great informative videos. Where is the link to the OTDR interpretation video? Thanks again
Thank you sir! here it is th-cam.com/video/v9fFk11eDKw/w-d-xo.html
TY, great info! Appreciate the effort.
My pleasure!
@kevin.Peres is it important to use a sizable launch cable when looking for faults in a fiber loop of less than 4000 ft? I’m troubleshoot shorter residential or business loops. We are running ASE or gpon.
Bob, Sorry for the delay. Launch cable length is always an important consideration. For such short links you could get away with a shorter launch cable. If everything is good you should only be using 3-5ns. Assuming you are not testing through the splitter.
You can use this formula to determine minimum launch cable length.
Pulse width in (ns) divided by 10. Convert to meters and multiply by 2.
Example: 1 μs -> 1000ns / 10 -> 100m x 2 = 200 meter -> Appropriate launch cable
(multiplying the distance times 2 is to add margin for the pulse to recover you can
safely go down to 1.5 times)
Great video thanks for sharing. Is there any distance limit on Iolm
Your welcome. IOLM just like OTDR is limited by dynamic range. If you look up the specs on OTDR/iOLM if the dynamic range is 38dB. You then remove 5dB for noise and I like to remove another 2 as margin you end up with 31dB of loss you can test.
Kevin, do you have a link to the webinar you did in November? I did get to sit in on it, but I wanted a copy to use for training. Thanks
Can you remind me what the webinar was on? Was it something I did for an organization?
Understanding OTDR - OLTS Analysis to Reduce Truck Rolls and Retest with EXFO
@@frojsst8555 Ah yes I did that video for TRS. They hosted it. You can find it here. vimeo.com/mcgrathrentcorp/download/531859324/ce748dc209
@@KevinPeres Thank you for the quick response!
Great info. Is there a way to get an EXFO OTDR certification? I'm working with a company that uses exclusively this product line.
David I apologize I do not check my comments often. I need to do a better job. Is this something you are still interested in? This is not an official EXFO site just a place i put videos to test them.
Hi Eng Kevin
Thank You for You efforts but
Would I Ask you question about inspection Fiber
Please Tell devices you are using ?
And it is function is cleaning tool actauly or just verify dirty of fiber
Please explain more
Salah my friend. I used the FIP-435B which is a fiber inspection probe. To clean I prefer a hybrid wet to dry method. Cleaning fiber connectors is instrumental in the performance of an optical network.
@@KevinPeres Thanks could I use ioL tracer P2P link with small distance Like 3 KM or 4 KM
As usual, thanks for the awesome video.
Two questions:
1. Does iOLM requires APC connector?
2. Is iOLM feature upgradable on any EXFO's iOLM ready OTDRs?
Sorry for having a lot of questions. Received our MAX720C recently. And currently exploring it.
Thanks Kevin
No worries about the questions. It is recommended to have an APC connector on the OTDR if you want to enable iOLM. Most of our test sets ship with APC connectors it gives us much better performance. If your unit says it is iOLM ready then it would just need a simple software key to enable it. If you have a UPC connector on the unit it can be replaced with an APC and upgraded to iOLM. Give the free trial of iOLM a shot. I am going to create a video talking about the new features of iOLM that include short fast and Medium link configurations under the Optimode setting in iOLM.
@@KevinPeres cool. Thanks Kevin. Will wait for the video.
Thanks for this movie, it very helpfull for my tests. thanks a lot
I am glad you liked it!
Hi Kevin,
Thanks for video. it gives more information about iOLM
in iOLM, if there is a splitter of 50:50 after certain distance, how iOLM shows the link view ?
I mean does software shows both out put after that splitter or only one?
Jenson, You are very welcome. If you are testing from the OLTS through the splitter you will only see one composite trace. Same with an OTDR. Depending on the dynamic range of the OTDR you will be measuring all the ports but folded on to one trace. What you will see is the loss from the splitter lets say a 1x32 you will have approx 17dB of loss if you have multiple ports used on the splitter depending on the distance from the splitter you will see a connection for the end of each drop. With APC connectors it may look like a splice if it has low reflection. I hope that answers your question.
Do I need to use a longer launch for iOLM test?? Am using 20M patch now and its all passing but some panel ports are failing, while testing with 500M its all passing. Pls advise
iOLM with its multipulse acquisition method does require a shorter launch cable. 20M, for the most part, is fine but as the connector degrades on either the launch cable or the iOLM port you will start to get experience traces that require longer PW, or the reflection from the contaminated port will start to affect the deadzone and this would affect shorter launch cables. It could also be with a 500M launch cable it is using a longer PW to test through the launch and you are losing spacial resolution. I would have to look at the traces to be sure. When you next test with iOLM check your launch conditions. Select the first element that is your launch. Make sure the loss is below 0.5 and the reflection in in the low -60dB or better.
Can iOLM able to detect fusion splices or just bulkhead connections?
It will detect splices as well. Any detectable event just like the OTDR in fact it does a better job of splice and connector detection.
I noticed my EXFO OTDR is set up for the green APC(angled tip) connection...... but blue SC (squared or flat) also seems to work. Should I be concerned with this interface? Is using an adapter crucial
Yes you should be concerned. Never ever mix green APC with blue UPC. The loss and reflection will be high and you can damage the connection.
@@KevinPeres Thank you very much. Does the APC connection match in a keyed fashion in other words does the short side of one connector meet the long side of the other connector? Or are they just floating and the angle attitude doesn't matter. Thanks
@@dizzolve They are keyed. The orientation is important. The angle is typically 8 degrees if you look straight down at the connector with the key up you will notice the slight angle.
Can iOLM detect the pinching point when tested with only one wavelength
no you need both a short and long wavelength to detect macrobending.
@@KevinPeres i see
@@MSB1180 if you had a choice of just 1 wavelength use the longer one. 1550 as opposed to 1310. If 1550 passes there is no serious macrobend issues
@@KevinPeres Thanks
Hi Kevin, this is a great video! Just to ask if we can use this video as a training material reference? don't worry we don't get money on this, just a training reference only :)
Sure thing I am glad you liked it. I am curious is this for a provider or an engineering firm?
@@KevinPeres Thanks for the approval. We are actually a private organization. We are planning to use you very informative content to our testers :)
Do you do any side consulting?
I do not. I am a company man. That doesn’t mean I can not assist. How can I help sir ? Send me an email at Kevin.Peres@EXFO.com.
awesome info !! thx a lot
great stuff
My otdr exfo 715b otdr has faulty.There is no screen touch or not mouce works
Maji, Email Support at support@exfo.com they will get someone to assist you. It might be as simple as resetting the platform image.
Please explain refractive loss?
Sorry for the slow response. Are you talking about the loss associated with the change in index of refraction? or loss from refraction say off the cladding?
I wonder if exfo930 can fast test with exfo945
Yes it can. You have to start the test from the 945 and in the 945 in user profile I believe is the option to activate 930 test mode.
@@KevinPeres cool! I’ll definitely try that! Thank you!
Hello, please how can I install iolm max tester 710b
Hello, reach out to our sales group at sales@exfo.com. Give them your SN and contact information and tell them you would like to speak to a local representative to discuss adding iOLM. Let me know if you have any questions.
how to purcahse this otdr in pakistan give me a purchasing solution and what the price in pakistan rupees .......
I am not a salesperson for EXFO I am more of an engineer. You can email sales@exfo.com and they can help you out.
wonna know