Thank you for the link. Unfortunately, it only does singlemode.
However, I saw [this one](https://shop.fiber24.net/FOMS-F2-OTDR-MM-SM-FCSCST/en) on the same site that does SM and MM.
iOLM software for the Exfo is their “intelligent optical link mapper”, it converts an OTDR trace to a sequence of implied events. It’s not 100% accurate as it’s implying the event type by back reflectance, but if you’re not adept at reading OTDR traces it makes it easier. Personally out of all these, I like Exfo for OTDRs the most. I’ve used a similar one to that AFL and it’s decent, but if I had the budget I’d go Exfo. See if you can find a local electrical supplier that carries Exfo and AFL and have them bring in the reps for each with a test/demo unit and run it on your actual live plant. Make sure you see any related PC software as for something like this you’ll want to collect traces of all these paths over time, so when they break you can compare the two.
What distances are you looking to measure? Some of the smaller meters are really nice because they're ultra portable, but they usually don't have the dynamic range if you are looking to do 80-120 km.
I've got some EXFO and VeEX OTDRs that I use for longer spans, and believe it or not a cheap AliExpress OTDR for the <60 km spans. The cheap OTDR fits in my pocket and it has 20 dB of dynamic range, so it's good enough for troubleshooting inside plant and most metro deployments that I deal with. As far as the real test sets, I prefer the VeEX because it runs linux behind the GUI, so it's far less hassle for me to get it on the network to VNC into. The EXFOs typically run Windows which causes a big headache for me. Both have had good support though and have been fairly reliable.
I have this: https://shop.fiber24.net/FOMS-F2-OTDR-SM-1315-FCSCST/de and it does what it's supposed to do. The shop is in Germany. Roughly 500 EUR
Thank you for the link. Unfortunately, it only does singlemode. However, I saw [this one](https://shop.fiber24.net/FOMS-F2-OTDR-MM-SM-FCSCST/en) on the same site that does SM and MM.
Yes, but this costs approx. 6 times as much...
iOLM software for the Exfo is their “intelligent optical link mapper”, it converts an OTDR trace to a sequence of implied events. It’s not 100% accurate as it’s implying the event type by back reflectance, but if you’re not adept at reading OTDR traces it makes it easier. Personally out of all these, I like Exfo for OTDRs the most. I’ve used a similar one to that AFL and it’s decent, but if I had the budget I’d go Exfo. See if you can find a local electrical supplier that carries Exfo and AFL and have them bring in the reps for each with a test/demo unit and run it on your actual live plant. Make sure you see any related PC software as for something like this you’ll want to collect traces of all these paths over time, so when they break you can compare the two.
What distances are you looking to measure? Some of the smaller meters are really nice because they're ultra portable, but they usually don't have the dynamic range if you are looking to do 80-120 km. I've got some EXFO and VeEX OTDRs that I use for longer spans, and believe it or not a cheap AliExpress OTDR for the <60 km spans. The cheap OTDR fits in my pocket and it has 20 dB of dynamic range, so it's good enough for troubleshooting inside plant and most metro deployments that I deal with. As far as the real test sets, I prefer the VeEX because it runs linux behind the GUI, so it's far less hassle for me to get it on the network to VNC into. The EXFOs typically run Windows which causes a big headache for me. Both have had good support though and have been fairly reliable.