naiefelyemeni

ok, i installed 32 cameras on 2 16ch AHD dvrs using cat5 and using baluns on each ends , and using 2 16ch power supply boxes.. used 1 twisted pair for neg power and 1 pair for postitive and 1 pair for video pos and 1 pair for neg video.. turned on everything and only got like 5 cameras lol and they were all garbled picture.. so i took out all the power cables from the box and did one by one , now i got 10 cameras working but seems like theres horizontal lines and a little shaking.. if i touch some of the cables that are behind the dvr many cameras get worse or better? and 3 of those cameras are on a seperate 2amp power supply, because if i put one of them back to the box all the cameras go crazy?? and some cameras as soon as i touch the postitive, the camera turns on? without the negative? wierd issues.. i think theres a negative/ground issues? i checked all the cables from both ends and all are good? Also is it true it maybe im using a pair for each connection of power when 1 wire should be used? im confused and going crazy

hi guys ok ive reset my pass on numurous hik vision dvr/nvrs but on this one it just wont accept the correct passcode nor the pass reset recovery code that you get from ip talk forums reset tool , it just always says inccorect code ? ive made sure 100 times i got the Long serial number correct and date , but just wont take it?? 🤷🤷🤷 is there another way or a board jumper reset method ?

wow 4 days and No reply? is it my username?? whats going on????

hi guys i have a 4ch lts TVI with extra ip ch .. camera is a Illustra Pro 3MP Minidome outdoor onvif but i matched all the info from camera end to dvr and opened the ports ( 8000, and 443 )but still cant connect.. on the LTS web interface it says offline " connecting " but never does..

hi guys i installed 12 4mp ip cameras that have a draw of about 400ma through a 48v 16ch built in poe nvr GW ( Great wall ) brand .. 10 worked fine , 4 of them on 200ft lines working fine.. its the farthest 2 im gaving issues with.. IRs light up but NVR not picking.them up.. i tried a 200ft line and coupler followed by a 50ft line so total 250ft each.. for Both cameras..No go.. i tried diff couplers and same thing.. i tried making my own cables using solid copper 5e 24awg and still no good ?? i tested out the cables out by plugging them to a router than to my laptop i got internet? i know best would be to use a cable tester but im pretty sure there good.. u guys think 250ft is just to far ? GW customer support told me up to 300ft shouldnt be an issue? u think if i change to cat6 will make.a.diff? 1 Awg will make the diff?

so 270ft cat5e 24awg should be no oroblem right? im going to the site tomorrow its most likely that wiring order

YES!!!!!! you cannot just match up ends!!! They are twisted SPECIFICALLY to prevent interference. That is why its not working. You need to stop "installing" systems until you learn to do it properly. Im sure there are many other mistakes you are making. I sure hope this system is not critical. its my first ip system didnt know it was neccaasary.. thanks i will change the order to 568B standard..

is 568 standard neccesary?? as long as the ends match up is it ok?? i read that thats not the case that the greeens split up they go around the center blue pair? what does that accomplish ? i thought as long as the ends match im good ? i have a feeling this is where i messed uo lol

lol i never learn my lesson .. its my firsy ip system .. i tried premade cables and cables i.made nvr doesnt picl.them up? maybe not enough power for 250ft??

Guys this install is driving me nuts.. I've tried multiple power supply boxes.. 3 in total and 8 split wall wart and 2 single wall warts.. Some cameras will just not get along with other Cameras! But now a new issue.. Got pictures clear and thought I was done.. Night vision irs kicked on and I'm having horrible picture quality with horizontal jumping lines ? Surge? Not enough power? But I have 9 cameras on a 30 Amp box , 4 on a 10 amp box , 7 on another 10 amp and the rest on the wall warts.. Enough power I assume? Some runs are up to 175-200 ft Max.. It does seem most of prone ones are the long run ones.. I'm using a pair for positive and 2 pairs for negative ? That should be fine ? What am I doing wrong? Amy help is appreciated I'm almost going crazy with this install .. Never using cat5 again ,sismese coax all the time from now on lol

Hi, i have been doing installs with power supply boxes, but half the times i would have power issues, is individual power supply for each camera better? safer?

hi guys, im installing a 32ch of rhte first time, and using cat5 with passive baluns on a AHD system for the first time.. and what a mess.. i wish i had of stuck with coax.. ok i have all 32 cables coming into the room together and split in half.. and then split the video twisted pairs from the power video pairs.. what a mess... im using 2 16ch 10a supply boxes.. which i believe are way under powered for 16 AHD cameras with 24-32 irs? im getting lines in many of them and wavy rolling pictures.. not on all but on most.. im thinkg ground loop becuase of all those wires and this whole setup being all within feet of each other? im going crazy here.. some cameras cause all the otjhers to go crazy.. even if i put them in a seperate wall wart ? ill upload pictures soon.. oh yeah here is how i wired them blue pos vid blue/white neg video green pair and brown pair for neg power orange pair for pos power.. does using different styles of baluns on each end cause any problems? i crakced open both types and they have the same coils in them " simonsen123 "344e-150mh " oh yeah some runs are up to 175-200ft..

i ran 32 cat5e a pair for video and a pair for pos power and 2 pairs for neg power.. they all come into the room together.. then i split into 16 to one dvr and 16 to another dvr , and all power is split into many different power supplies, because if i put all power into 2 supply boxes then all videos will have bad picture.. so they are about 10 different power supplies to keep the pictures clean.. but i didnt have enough power supplies so there are like 6 cameras that are still not clear.. but i just wanted to use 2 16ch ps boxes not 15 different power supplies 3 boxes, 3 4 way splitters and 4 single wall warts.. kind of waste of money and to messy to many wires/cables.. And here is a pic of the baluns i used they say HD/ cvi/ tvi .?

i dont think its the baluns, because half of the system works fine. Well we don't know what type you used or if they are baluns 100% not balun issue because if i give the prone cameras a seperate power supply picture is clear.. its probably ground issue, ill try grounding the dvr to the power supplies and hopefully that fixes the issue because i dont want to use 15 different power supplies for this install lol to much money just down the drain..

i dont think its the baluns, because half of the system works fine.

This is getting confusing. I'm telling you to make sure the only negative that supplies the cameras is that from the power supply that feeds them. I'm trying to make sure you are not accidentally interconnecting negatives, earths and grounds that shouldn't be. That statement sounds the wrong way round to me and if you'd have said you removed the negative and the cameras still worked then I'd say that probably proves a ground loop via the DVR earth. In other words the shield/screen out of the DVR is interconnected with your camera power supplies somewhere. I have no idea how they would be getting a positive voltage. Are the power supplies DC out or AC? I think you need to have an understanding of what is happening in your system. Do you have any previous experience with electronics or basic electrical principles? i have installed about 20 stores already using coax , this is the first install using cat5e and baluns.. and i have this crazy issue. what i meant is if i remove the positive, the camera still stays on lol.. meaybe its beacuse there cheap like tom said.. ANd i dont think its voltage drop because i hook up the cameras that have issues , about 15 , seperately and they work fine,, i even conneected a far run abiut 175ft using only a 500mah adapter and its picture was perfect, even at night.. so i can rule out voltage drop, its probably interference i guess? i never had this issue ever before.. ill never use cat5e again, well at least not the cheap CCA kind lol ..

So you think its a power supply problem? Is that because when others were powered down, your problem cameras looked better? Did you even check volt drop? Have you tested a 'bad' camera separately as Boogieman suggested? Did you swap out baluns on a 'bad' camera? I hope your idea helps you but it sounds crazy to me to just swap out PSUs with no evidence of the problem in the first place. I'll ask one other question just out of curiosity: How do all your cables run out of the DVR room and to where they start to split off? Are they on a cable tray, or tacked next to each other on the wall, or are they bundled up and tied together? If your new PSUs don't fix it, you will have to look at interference - as has been suggested, cheap CCA, with cheap baluns could cause problems amongst a bundle of cables running very close together. And if you really think it's down to a ground loop problem, make sure only the cameras have a negative from the PSU, don't attempt to interconnect any other earths, grounds unless it is specifically required. Most ground loop problems are solved by isolation. I'm only saying this because you said some of your boxes were grounded, and I'm not sure what you meant by that. They are all running into the room together and tied together then split in hlaf 16 to one dvr and 16 to the other.. if i take off positive and leave negative on almost all of them the cameras still stay on.. i havent went back to the job site and will try grouding the dvr to the psu box..

Did you do the basics, as discussed - isolating and working on only one camera at a time? When you're confused by something, the worst thing to do is jump from one thing to another without method. It very rarely solves the problem.[/q i did try one by one, but there are so many cameras that cause issues with other cameras.. Now i have like 9 cameras separate box , 6 cameras seperate box , 3 cameras separate box , 3 cameras seperate adapter and 2 and 2 seprate adapters and 1 on a adapter on its own... if i mix any of these with any of the others they'll mess up each other.. so i gave up and just bought separate power supplies 2A for only $3 and just ill hook half of them up to individual adapters.. and be done lol .. driving me nuts..

But the power supply boxes don't have a ground on the Plug end? Do I still ground to the metal box and try?

ok i checked the calculator online and with more Amps the greater the voltage drop?? i thought its the opposite? so thats why im getting ****ty picture on the cameras! http://www.calculator.net/voltage-drop-calculator.html?material=copper&wiresize=84.22&voltage=12&phase=dc&noofconductor=4&distance=180&distanceunit=feet&amperes=1.5&x=26&y=9

Voltage is not your problem it's your amps Your camera might only be 1amp ..... But you will need 2 to 3 amp for that distance ..... And also take into account IR I would re-think that statement Tom. The current does not change throughout a series circuit. The current that flows at one end is the same as what flows at the other end. The flow of this current through a resistive line causes a voltage difference from one end to the other - the greater the flowing current then the greater the voltage differential. This is what the OP is having trouble with. Its probably no use to you now but normal practice for longer runs is to go with 24Vac power & cameras (no earth loop issues either) Ok it seems to be a ground loop or Interference that's messing up all these cameras.. I'm using now 12 different power sources boxes , wall warts mix and all cameras are clear now?? I didn't want to go through 32 wires to see which ones has the interference.. But it looks so messy now.. : ( but customer is happy now or at least that's what I Think lol

Voltage is not your problem it's your amps Your camera might only be 1amp ..... But you will need 2 to 3 amp for that distance ..... And also take into account IR I'm confused, the Voltage calculator says The higher the Amp Load the bigger the voltage drop?? I'm very confused here..

Thanks will go today or Tomorrow to job site and test voltage at ends.. I'm pretty sure it's a voltage drop according to the Voltage drop calculator.. Will respond with the results ASAP ..

Yes that's what I'll do split the pairs , how about if I did 4 for the pos and 2 for negative? Or split is best? And also the ps boxes have no ground on cable that plugs into the wall.. But the boxes and are Grounded inside the box though?

Yes but those cameras draw at most 1 amp.. So what do you think? It's probably voltage drop Since its only on the farthest cameras.? And you think adding one more wire for the positive will Make the difference? On the calculator it said it would go up 1 volt , that's good enough?