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We work with a vendor (campus televideo) to help support our distribution network, we work very closely with them though. We have a mix of legacy coax and Singlemode fiber to distribute. Singlemode is a requirement - I don't think you can use multimode at all. however the infrastructure terminations do not need to be angle polish, use the same flat polish terminations we use for data, but use jumper cables (APC -> Flat) to connect to the RF equipment - it works fine so long as you account for the small DB loss you get from the flat connections. In a couple of places where we had a number of jumps to make we did some fusion splices to keep loss down. Dealing with analog RF over fiber is a different experience than dealing with data - performance can be somewhat subjective, 'snow' can be caused by dirt on a terminator and chasing it down is fairly labor intensive - a DB meter, Microscope and a ton of prep wipes are very useful tools (the optical signal level meter is essential). -----Original Message----- From: The EDUCAUSE Network Management Constituent Group Listserv [mailto:NETMAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of David R. Morton Sent: Friday, January 11, 2013 7:52 PM To: NETMAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [NETMAN] RF/Cable/Video distribution... Jeff, We just upgraded and deployed a system such as this. We now have a digital headend that serves about 130 channels. We use fiber to distribute the signal from the headend to remote locations. This is then converted back into RF over Coax for distribution throughout the building. We will soon be testing a IPTV solution on top of this. If things go as planned, our resident students will be able to watch live TV on their laptop or even via a Roku device connected to a TV. I'd be happy to talk about what we are doing and what we have planned if interested. David David Morton Director, Mobile Communications Service Owner, HuskyTV University of Washington dmorton@u.washington.edu tel 206.221.7814

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On 1/12/2013 2:17 PM, Shuttlesworth, James wrote: > We have a mix of legacy coax and Singlemode fiber to distribute. Singlemode is a requirement - I don't think you can use multimode at all. however the infrastructure terminations do not need to be angle polish, use the same flat polish terminations we use for data, but use jumper cables (APC -> Flat) to connect to the RF equipment - it works fine so long as you account for the small DB loss you get from the flat connections. I have been lead to believe the opposite... analog RF requires APC terminations end-to-end, while you can get data over APC as long as the last jumper (panel to data equipment) is APC->UPC. It is the presence of the flat termination that generates the reflectance that causes the analog noise? > Dealing with analog RF over fiber is a different experience than dealing with data - performance can be somewhat subjective, 'snow' can be caused by dirt on a terminator and chasing it down is fairly labor intensive - a DB meter, Microscope and a ton of prep wipes are very useful tools (the optical signal level meter is essential). Will a data OTDR work over APC terminations? Jeff ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Nope. During transmit you can use flat (we do everywhere, no problems) just angle to connect to the equipment. You do get slightly more loss, but in our experience its about .5 db. You just need to budget for it. Sent from my iPad
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