This is a type A cable. Now imagine this was just a flat ribbon fiber and you bent it in a U without twisting the ribbon placing both MPOs on top of each other. Both Keys would be UP and fibers would be straight through.
If you then took two identical cassettes and plugged them in, pairs would match up (wouldn't matter what the cassettes were but you might as well use straight through) [image: Screen Shot 2020-04-06 at 8.37.47 AM.png] If you wanted to use a duplex SFP, you would just need to flip the polarity on one of your patch cables. On Mon, Apr 6, 2020 at 8:37 AM Carl Peterson <cpeter...@portnetworks.com> wrote: > I just drew it out and checked my last order - all type A. > > On Mon, Apr 6, 2020 at 8:31 AM Carl Peterson <cpeter...@portnetworks.com> > wrote: > >> I'm confusing myself. Let me pull up a diagram. >> >> >> On Mon, Apr 6, 2020 at 8:29 AM Josh Baird <joshba...@gmail.com> wrote: >> >>> Got it, thanks for the hand holding. :) >>> >>> On Mon, Apr 6, 2020 at 9:27 AM Carl Peterson <cpeter...@portnetworks.com> >>> wrote: >>> >>>> Type A Female to Female cable. >>>> Type A cassettes on BOTH ends. (Male pins in the cassettes which is >>>> default for FS and most cassettes) >>>> >>>> That's it. >>>> >>>> Not rocket science. >>>> >>>> On Mon, Apr 6, 2020 at 8:23 AM Josh Baird <joshba...@gmail.com> wrote: >>>> >>>>> So - I don't think it's possible to use BiDI when using the >>>>> cassettes as recommended by FS.. but I'm still trying to wrap my head >>>>> around it. >>>>> >>>>> They recommended this: >>>>> >>>>> * https://www.fs.com/products/70220.html (12fiber, MTP female on both >>>>> ends, Type "A" polarity) >>>>> * https://www.fs.com/products/57016.html on one end (Type A cassette) >>>>> * https://www.fs.com/products/57037.html on the other end (Type AF >>>>> cassette) >>>>> >>>>> They also said that BiDI will not work due to the polarity mis-match >>>>> on TX/RX. >>>>> >>>>> Does this sound right? >>>>> >>>>> >>>>> On Fri, Apr 3, 2020 at 9:20 AM Mark Radabaugh <m...@amplex.net> wrote: >>>>> >>>>>> In addition to Jared’s comment (don’t mix SM and MM fiber), make sure >>>>>> you have the correct connectors at each end. Also make sure when >>>>>> ordering >>>>>> BiDi optics that you pair them correctly. Tx on one end needs to match >>>>>> Rx >>>>>> on the other. You will need two different part numbers for the SFP’s. >>>>>> >>>>>> Mark >>>>>> >>>>>> On Apr 3, 2020, at 9:11 AM, fiber...@mail.com wrote: >>>>>> >>>>>> I was going to write it'll work just fine, Layer 1 don't care, but >>>>>> you linked to a *multimode* MTP casette. This will either fail outright >>>>>> or >>>>>> have spectacular losses. Swap the MTP casette for a single mode one and >>>>>> you'll be fine. >>>>>> >>>>>> Jared >>>>>> >>>>>> >>>>>> *Sent:* Friday, April 03, 2020 >>>>>> *From:* "Josh Baird" <joshba...@gmail.com> >>>>>> *To:* "AnimalFarm Microwave Users Group" <af@af.afmug.com> >>>>>> *Subject:* Re: [AFMUG] Fiber Up Tower >>>>>> Someone who knows more about fiber, please help me out here.. >>>>>> >>>>>> Considering buying the 12count SM armored fiber [1] with the duplex >>>>>> cassettes [2]. To maximize the usage of the 12ct, I would like to use >>>>>> BiDi >>>>>> SFP's so that I can use a single strand of fiber per radio. If I use the >>>>>> correct BiDi SFP's, will I have any issues using the duplex cassettes >>>>>> that >>>>>> are linked here? I have always just used duplex fiber+SFPs and have no >>>>>> experience with BiDi. >>>>>> >>>>>> [1] https://www.fs.com/products/70220.html >>>>>> [2] https://www.fs.com/products/57017.html >>>>>> >>>>>> On Mon, Mar 30, 2020 at 11:23 PM Kurt Fankhauser < >>>>>> lists.wavel...@gmail.com> wrote: >>>>>> >>>>>>> I have been researching this heavily over the past few days and this >>>>>>> is what I am "thinking" about doing for fiber and power up tower. >>>>>>> >>>>>>> 1. Run a MPT/MPO fiber trunk cable up tower (12 fibers) >>>>>>> https://www.fs.com/products/68017.html (indoor version but >>>>>>> available immediately in USA shipping)(could use this temporarily) >>>>>>> https://www.fs.com/products/70220.html (custom length rugged >>>>>>> outdoor version but takes 30 days to get here from Asia) >>>>>>> >>>>>>> 2. Run each end of the MPT Trunk into a "MPT-12 to 6x LC Duplex >>>>>>> Cassette" (tower top this will be in an enclosure) >>>>>>> https://www.fs.com/products/57017.html >>>>>>> >>>>>>> 3. Run custom length FTTA LC connector Patch cables from the Tower >>>>>>> Top enclosure to each radio SFP >>>>>>> https://www.fs.com/c/ftta-patch-cables-3856 >>>>>>> >>>>>>> 4. For Power run individual power wires or a combination of >>>>>>> multi-conductor wire "cord style." The cord below is 12 guage but has 4 >>>>>>> conductors. If wired properly you could individually power 3 radios and >>>>>>> use >>>>>>> a common ground wire and still be able to power cycle the 3 radios from >>>>>>> the >>>>>>> ground. If I need 6 radios I will run a second cord. My towers are only >>>>>>> 150' tall so I think 12 guage should be more than big enough for me even >>>>>>> with Medusa AP's. >>>>>>> >>>>>>> https://www.ebay.com/itm/250-ft-12-4-SJOOW-SJO-SJ-SJ00W-Black-Rubber-Cord-Outdoor-Flexible-Wire-Cable/143388108175?hash=item216298e58f:g:KSQAAOSwA0JclR2G >>>>>>> >>>>>>> >>>>>>> I would run the power cords and fiber trunks into a common tower top >>>>>>> enclosure and wire out from there. I really like this Trunk cable idea >>>>>>> with >>>>>>> the fiber because If done right there will be absolutely no splicing of >>>>>>> fiber at all. If the Trunk cable goes bad just run a new one up and >>>>>>> plug it >>>>>>> into the Cassettes and everything should keep working. You could >>>>>>> standardize on a couple different lengths of the MPT fiber trunk 150' or >>>>>>> 250' and just stock those and coil up excess cable outside or something. >>>>>>> >>>>>>> I was un-aware that Medusa AP's needed 8 gauge wire at 300' but i >>>>>>> guess it could make sense. >>>>>>> >>>>>>> >>>>>>> On Mon, Mar 30, 2020 at 9:33 PM Josh Baird <joshba...@gmail.com> >>>>>>> wrote: >>>>>>> >>>>>>>> Would you happen to have a link handy for the specific OFDC that >>>>>>>> you are talking about? I'm trying to spec out a similar situation >>>>>>>> right >>>>>>>> now. >>>>>>>> >>>>>>>> On Mon, Mar 30, 2020 at 9:28 PM Adam Moffett <dmmoff...@gmail.com> >>>>>>>> wrote: >>>>>>>> >>>>>>>>> In the past I went with individual pre terminated cable >>>>>>>>> assemblies. I went with a "core locked" fiber rather than a loose >>>>>>>>> tube so >>>>>>>>> there wouldn't be any icky pick oozing out. The connectors were LC >>>>>>>>> duplex >>>>>>>>> because the radio manufacturer's approved SFP's were LC duplex (for >>>>>>>>> both >>>>>>>>> Trango and Telrad). I went with individual cables because any tower >>>>>>>>> climber can replace a cable, but I don't expect most tower climbers >>>>>>>>> to be >>>>>>>>> able to splice or terminate fiber. >>>>>>>>> >>>>>>>>> Today I'd strongly consider a Commscope OFDC enclosure up on the >>>>>>>>> tower. I'd use a 24F and pre-splice all the connectors in the OFDC >>>>>>>>> and >>>>>>>>> have the tower guys hang the whole assembly. Then it would be pre >>>>>>>>> terminated jumpers from the OFDC to the equipment. >>>>>>>>> >>>>>>>>> On 3/30/2020 5:34 PM, Matt wrote: >>>>>>>>> >>>>>>>>> What is everyone using for fiber up tower? What using for >>>>>>>>> connectors? >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> AF mailing list >>>>>>>>> AF@af.afmug.com >>>>>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>>>> >>>>>>>> -- >>>>>>>> AF mailing list >>>>>>>> AF@af.afmug.com >>>>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>>> >>>>>>> -- >>>>>>> AF mailing list >>>>>>> AF@af.afmug.com >>>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> >>>>>> -- AF mailing list AF@af.afmug.com >>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> -- >>>>>> AF mailing list >>>>>> AF@af.afmug.com >>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> >>>>>> >>>>>> -- >>>>>> AF mailing list >>>>>> AF@af.afmug.com >>>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>>> >>>>> -- >>>>> AF mailing list >>>>> AF@af.afmug.com >>>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>>> >>>> >>>> >>>> -- >>>> >>>> Carl Peterson >>>> >>>> *PORT NETWORKS* >>>> >>>> 401 E Pratt St, Ste 2553 >>>> >>>> Baltimore, MD 21202 >>>> >>>> (410) 637-3707 >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >> >> >> -- >> >> Carl Peterson >> >> *PORT NETWORKS* >> >> 401 E Pratt St, Ste 2553 >> >> Baltimore, MD 21202 >> >> (410) 637-3707 >> > > > -- > > Carl Peterson > > *PORT NETWORKS* > > 401 E Pratt St, Ste 2553 > > Baltimore, MD 21202 > > (410) 637-3707 > -- Carl Peterson *PORT NETWORKS* 401 E Pratt St, Ste 2553 Baltimore, MD 21202 (410) 637-3707
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