janclaes47 Posted June 1, 2017 Author Share Posted June 1, 2017 1 hour ago, RichCor said: But there are OTHER forms of Ethernet Media Converters that use copper wire, coax, For the coax option. I have this http://infinitysystem.co.th/product-series.php?pro=00142 Now if I buy this and place at the side of the cameras, am I then good to go? http://www.ebay.com/itm/EoC-Ethernet-Extender-over-Coax-2Km-Transmission-Distance-for-Camera-N5G7-/142104567865?hash=item211617a039:g:8MIAAOSw9IpXxRvE Link to comment Share on other sites More sharing options...
RichCor Posted June 1, 2017 Share Posted June 1, 2017 Generally, I like to have equipment from the same manufacture to make sure the setup options are completely compatible and supported. There's nothing in the text description to indicate these Ethernet Converters would be compatible with anything other than themselves. So I wouldn't bet on them being 'compatible' with your S7400. The text indicates they must be used in 'pairs' or multiples ("One to Many"). The text also notes, "Variety transmission medium, coaxial cable, telephone cable or UTP cable". They utilize bayonet rather than F-connectors. Should work just as well as Powerline Adapters. Link to comment Share on other sites More sharing options...
carlyai Posted June 2, 2017 Share Posted June 2, 2017 For my couple of cents worth: I think you need to go back and estimate the worth of your cameras and monitoring. Do you want the operation and monitoring to be extremely reliable? If the answer is YES, then you need a dedicated system. To my mind a dedicated system is CAT cable, buried in that red and black conduit, to each camera.If you do use a shared system, over power line adaptors, and you get strong interference at some times, then maybe your digital 1s or 0s may be changed to 0s and 1s (logic circuits specify what voltage a 1 or 0 is) and your picture resolution will be crap. Sent from my SM-J700F using Tapatalk Link to comment Share on other sites More sharing options...
janclaes47 Posted June 2, 2017 Author Share Posted June 2, 2017 6 hours ago, RichCor said: Generally, I like to have equipment from the same manufacture to make sure the setup options are completely compatible and supported. There's nothing in the text description to indicate these Ethernet Converters would be compatible with anything other than themselves. So I wouldn't bet on them being 'compatible' with your S7400. The text indicates they must be used in 'pairs' or multiples ("One to Many"). The text also notes, "Variety transmission medium, coaxial cable, telephone cable or UTP cable". They utilize bayonet rather than F-connectors. Should work just as well as Powerline Adapters. I was of the opinion that all these EoC devices used the same protocol, but I understand that it will be a hit and miss if the work together. For sure it will make it much easier if I can use these devices because the coaxial cable from start to end is in place already. The difference in connector I assume might not be an obstacle, as they are just screw on, but the connection to the cable of bayonet and F-connector is similar. To get back to your " one to many " indication, which I hadn't noticed. I have 2 locations where I could utilize such a device, coaxial cable in place in both locations, but how would I go with 2 transmitters and 1 receiver, since I see only 1 cable IN connection? Link to comment Share on other sites More sharing options...
janclaes47 Posted June 2, 2017 Author Share Posted June 2, 2017 4 hours ago, janclaes47 said: 10 hours ago, RichCor said: Generally, I like to have equipment from the same manufacture to make sure the setup options are completely compatible and supported. There's nothing in the text description to indicate these Ethernet Converters would be compatible with anything other than themselves. So I wouldn't bet on them being 'compatible' with your S7400. The text indicates they must be used in 'pairs' or multiples ("One to Many"). The text also notes, "Variety transmission medium, coaxial cable, telephone cable or UTP cable". They utilize bayonet rather than F-connectors. Should work just as well as Powerline Adapters. I was of the opinion that all these EoC devices used the same protocol, but I understand that it will be a hit and miss if the work together. For sure it will make it much easier if I can use these devices because the coaxial cable from start to end is in place already. The difference in connector I assume might not be an obstacle, as they are just screw on, but the connection to the cable of bayonet and F-connector is similar. To get back to your " one to many " indication, which I hadn't noticed. I have 2 locations where I could utilize such a device, coaxial cable in place in both locations, but how would I go with 2 transmitters and 1 receiver, since I see only 1 cable IN connection? I discovered that I have 2 of those S7400 EoC slaves. Can I use them in the same way as the EoC Ethernet extenders of Ebay? Link to comment Share on other sites More sharing options...
RichCor Posted June 2, 2017 Share Posted June 2, 2017 EoC seems to be an always evolving protocol and multiple solutions. Wikipedia: EoC (Ethernet over Coax) While most are dedicated to re-using already in-place coax installations some are proprietary solutions, so no guarantee different adapters will be compatible. With Master/Slave configurations, usually there is one MASTER and one or multiple SLAVE devices on a commoned coaxial connection. The coax can be daisy-chain (in/out) or even external splitter/coupler distributed. Some EoC devices are designed to function on an already-functioning CaTV distribution coax, while other solutions are meant to operate in isolation. Link to comment Share on other sites More sharing options...
KittenKong Posted June 2, 2017 Share Posted June 2, 2017 EoC is widely used in condo buildings. It certainly worked well enough in mine when I had it. This involved sharing one cable for both TV and broadband, with splitters at both ends. Other splitters in theory allow for satellite to be added to the mix though I suspect that the more you add the less reliable it becomes. Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 (edited) On 6/2/2017 at 2:09 AM, RichCor said: Generally, I like to have equipment from the same manufacture to make sure the setup options are completely compatible and supported. There's nothing in the text description to indicate these Ethernet Converters would be compatible with anything other than themselves. So I wouldn't bet on them being 'compatible' with your S7400. The text indicates they must be used in 'pairs' or multiples ("One to Many"). The text also notes, "Variety transmission medium, coaxial cable, telephone cable or UTP cable". They utilize bayonet rather than F-connectors. Should work just as well as Powerline Adapters. I just measured the resistance of one of the coax cables I want to use, by connecting the metal shield to the centre core at one end, then measure with an multimeter at the other end. The resistance reads 11 Ohm. Is that too high or acceptable to use the EoC Ethernet extenders ? The cable length is about 40 meters Edited June 3, 2017 by janclaes47 Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Seems very low to me. You sure its not connected to anything?Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Are you measuring end to end or between centre core and sheild?Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 Just now, Forkinhades said: Seems very low to me. You sure its not connected to anything? Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Yes I'm sure, and at the open end I measure shield to core Is low positive or negative? What's ideal resistance? Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Can you send a pic, not sure what your trying to accomplish.Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 There shouldnt be any resistance between the centre core and the braid. The braid is negative.Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 Just now, Forkinhades said: Can you send a pic, not sure what your trying to accomplish. Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app At one end of the cable ( maids quarters) I tie the shield and core together, then I go on my loft where there are a bundle of coax cables entering to find which one comes from the maids quarters. I do this by connecting a multimeter betwwen core and shield of each cable. The one that gives a measurement is the right one, isn't it. The reading on the scale, with the digital multimeter set to 200 Ohm, reads 11.3 Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 OK, i undetstand now. Reading seems a little high in that case, but should be fine for your needs. Its not like your trying to put 220Vac on it, where it would be a problem. :) Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Whats the approx length?Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 (edited) Just now, Forkinhades said: Whats the approx length? Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app 40 meter, may be little more. Edited June 3, 2017 by janclaes47 Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 The resistance of an 1.5mm cable (inner core) is 12milliohms per metre. Your reading is high because of your braid.Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 More important is that the core and braid are 'clear' with 50 volts applied. I doubt if you have the equipment to do that. So just use your higest setting on your ohm meter Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 1 minute ago, Forkinhades said: The resistance of an 1.5mm cable (inner core) is 12milliohms per metre. Your reading is high because of your braid. Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app I just found this on a pdf about POEoC, not sure if this is related, Typically, regular resistance of RG6 is 13 Ω /100m 5. Typically, regular resistance of RG59 is 17 Ω /100m 6. Typically, regular resistance of RG11 is 4.9 Ω /100m Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 (edited) 6 minutes ago, Forkinhades said: More important is that the core and braid are 'clear' with 50 volts applied. I doubt if you have the equipment to do that. So just use your higest setting on your ohm meter Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app What would be my highest setting ? Would that be 200K Ohm or 20M Ohm or 200 Ohm And do I measure that in the same way? Edited June 3, 2017 by janclaes47 Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Yeah thats fine, depends on the size of the inner core. That reading would be end to end, not core to braid.Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 What would be my highest setting ? Would that be 200K Ohm or 20M Ohm or 200 Ohm20M = 20 Meg ohmsHopefully the reading is infinity Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 Just now, Forkinhades said: 20M Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Do I measure same way as now, shield tied to core, and what should be the reading? Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 You have proven the cable.Now you need to open the conductors.Clear the ends, then just put leads on, and test as before, you are looking for a zero reading. Which equates to infinty. Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 Just now, Forkinhades said: You have proven the cable. Now you need to open the conductors. Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app How I do that? Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 Please read last postSent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 1 minute ago, Forkinhades said: Please read last post Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app You mean post #53? Infinity means 0.0000 ? Link to comment Share on other sites More sharing options...
Forkinhades Posted June 3, 2017 Share Posted June 3, 2017 #55Yeah your good to go.Also you have confirmed you have the right cable.Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app Link to comment Share on other sites More sharing options...
janclaes47 Posted June 3, 2017 Author Share Posted June 3, 2017 5 minutes ago, Forkinhades said: #55 Yeah your good to go. Also you have confirmed you have the right cable. Sent from my SM-G935F using Thailand Forum - Thaivisa mobile app I hadn't measured yet, as i don't have TV in the loft, but did now. Every setting above 200 Ohm, form 20K to 20M, reads 0.000, Link to comment Share on other sites More sharing options...
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