Monitor Your Assets 0 Posted December 5, 2007 I have two Channel Plus 2514a splitter/combiners that I am using with a modulator to watch a DVR over household television. When using the combiner, the picture quality for all channels degrades noticeably. The combiner's input is a cable TV feed and a DVR feed that is set to channel 120. The output goes to the second 2514 which simply splits the feed to 4 separate cable runs. I tried swapping the two units with the same results. I also tried omit the DVR feed (combiner with only one input - cable television) with the same results - a slightly snowy picture. I also tried grounding both units too. Cables are fine too. If I remove the combiner and just use one unit as a splitter, the picture quality is great, but no CCTV. Does anyone have any troubleshooting ideas? Since both seem to work well as a splitter, can anyone recommend a combiner from another manufacturer? TIA, -- Marc Share this post Link to post Share on other sites
survtech 0 Posted December 5, 2007 I have two Channel Plus 2514a splitter/combiners that I am using with a modulator to watch a DVR over household television. When using the combiner, the picture quality for all channels degrades noticeably. The combiner's input is a cable TV feed and a DVR feed that is set to channel 120. The output goes to the second 2514 which simply splits the feed to 4 separate cable runs. I tried swapping the two units with the same results. I also tried omit the DVR feed (combiner with only one input - cable television) with the same results - a slightly snowy picture. I also tried grounding both units too. Cables are fine too. If I remove the combiner and just use one unit as a splitter, the picture quality is great, but no CCTV. Does anyone have any troubleshooting ideas? Since both seem to work well as a splitter, can anyone recommend a combiner from another manufacturer? TIA, -- Marc You are probably attenuating the signal too much with the combiner/splitters. You will need to add a drop amp to overcome the losses (approximately 3.5db per split). It should be 2-way for cable. Check out the DA-520A. Share this post Link to post Share on other sites
Monitor Your Assets 0 Posted December 6, 2007 You are probably attenuating the signal too much with the combiner/splitters. You will need to add a drop amp to overcome the losses (approximately 3.5db per split). It should be 2-way for cable. Check out the DA-520A. I followed your suggestion and it worked very well. Thank you! -- Marc Share this post Link to post Share on other sites
Monitor Your Assets 0 Posted November 24, 2008 Just as a follow up, I recently switched to digital cable which includes a "Video On Demand" (VoD) service. This allows customers to rent/buy movies for a 24 hour period using the remote control. It seems that my splitter/combiner is preventing outbound communications via cable. I don't suppose there are any workarounds other than bypassing my DVR channel overlay? -- Marc Share this post Link to post Share on other sites
scorpion 0 Posted November 24, 2008 Just a matter of upgrading your setup, or running separate wires, and using different TV inputs. Affinity Digital Cable Combiner http://www.channelvision.com/products/index/88 http://www.channelvision.com/products/view/427/88 http://beta.channelvision.com/uploads/1215557281_P-0321_MixedSystem.pdf Diagrams and Layouts http://www.channelvision.com/files/guides/diagramsLayouts.pdf Filters and Digital Cable Support Guide http://channelvision.com/files/guides/Filters_And_DigitalCable.pdf Share this post Link to post Share on other sites
