Carl, FS is recommending that I choose "Type C Cross-Pair" for polarity when ordering the MPT trunk cable. Are you saying this is incorrect and I should choose "Type A Straight Thru"?
Thanks, Josh On Fri, Apr 3, 2020 at 11:48 AM Carl Peterson <cpeter...@portnetworks.com> wrote: > I'd recommend using SCA cassettes and SCA-SCU OD patch cables. (or SCU > cassettes and SCU-SCU cables) I've got a source in SC that builds the > patch cables out of 4.8MM OD cable - You can also source them from Corning > etc. Much easier to get an outdoor simplex patch cable in SC rather than > LC. We've standardized on SCA for our plant because we do a lot of > GPON and that is the defacto standard. > > If you are new to MPO/MPT, pay attention to male/female pins and to > polarity. They will try to get you to do A on one end and B on the other > because they don't understand that you want it for BiDi and want straight > through. Use A on both ends for straight through. > > On Fri, Apr 3, 2020 at 9:28 AM Josh Baird <joshba...@gmail.com> wrote: > >> Got it. Yeah, I meant to link to a SM cassette (not MM). >> >> Thanks, Mark & Jared. >> >> 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 >
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