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Dear Soundy. Thanks again, now my picky customer complains that there is running horizontal line running up the LCD montiors(Both). I read through the web, they are saying ground loop problem? Can I solve it by adding ground loop isolator? regards KK

Dear All, This is 2 different picture that I took for references

Hi, I took Some pictures already but not sure how to upload it. Anyway, change to balun through cat 5e and through converter, though the double image is still there it is no longer as visible unless you really strain your eye to see. Anyway thanks for all the help, I am still no so sure if client can accept, will wait for news. But for those still interested to see how the picture look like, let me know how to post it, as I can t tell where the problem is, I am still not satisfied.

Dear Tom, What are those thing call? How do I test them with it? Can I buy from you if I need to? Regards Kelvin

Dear All, Interesting just out of curiousity, if all the six cable are damage ( I run the cables) if it is really damage, who is going to bear the extra cost of re-running the cable, cutting the pave road etc etc KK

Will try in on Friday, thank for all the input KK

Dear All, How I wished it is that simple, I have 6 RG59 cables that run from location A in a building that run underground in a conduit to location B about 150M. I test all the 6 cables, all without result (all double image). What I did was physically run a new cable fly over the building , run across the road into location B. I did this to verify if it is due to cable lenght, but when I did this test, it is ok, not double image. So I rule out cable length problem , I rule out monitor, I rule out VGA converter. As per second suggestion to use the cat5e with Balun. I have 2 DVRs at location A and 2 monitor at Location B, is it possble to use a single cat5e to out 2 seperate monitors. PLease let me know, as I am about to kill someone already KK

Dear Soundy RG59 KK

Dear Soundy, I check and confirm that they are on PAL, I am in Asia, that is why I am using a PAL system. I think I also ever try using a LCD TV with BNC to RCA connectors to connect it, but I think the double image still persist. I read through the net again and again. Most of the theory only point to 75 ohms termination. I am not sure what to do next, so hope that wireless may do the job. One thing to mention though, if I am using a short cable with the same montior, it does not have this problem REgards KKK

Dear All, Thanks for the help. OK let me go into details 1) I am using Kodicom DVR 16 ch (2 sets of DVR) at location A. The monitors (2 sets) are located at the guardhouse(Location B) which is about 150M away from location A. We are lucky to run 6 coxial cable plus 1 cat 5e cable from Location A to Location B. 2)The connection is DVR video output (BNC to BNC) to (BNC to VGA) to the monitor 3) When I connected DVR 1 to MOnitor 1 and DVR 2 to Monitor 2 through the coxial cables, both the monitors have double image (side by side). 4) I try using balun to boost up the signal (that fails) , I went to a local dealer to add a video amplifier but that failed also. So, they recommend me another model that will cost about 1.5K that guarantee me result (this I have not try yet) 5)Another method I did was running a network switch connected from the 2 DVR and join to the Guardhouse forming a local LAN network without internet access. I run 2 PC at the guardhse to run the DVR Central management Software. But customer (fussy) insisted that it is too laggy. 6) So desperate that I disconnected all the 32 cameras and connect only 1 panasonic dome camera to see if the image is ok Still the double image is there I am on my wits end, I try using a VCD player to connect to the montior with the same RG59 cables, that image run ok. I run the same cable on the flooring to the guardhouse and test the cable lenght, no problem. MY problems cannot be solve, my header is bigger by the day I suspected 1) Grounding ??? maybe as the VCD is a 2 pin w/o ground 2) Monitor Setting: is there anything for me to set on the montior 3) The 4 extra cable is creating problem ???? Help I am lost, client refuse to pay until problem is resolve KKK

Dear All, I am using BNC output from DVR to a converter BNC/VGA to LCD monitor.If I am using cat 5e cable through local Lan, there is a 2 second lapsed in term of real time, My client cannot accept a 2 second lapsed from real time . I am having 2 side by side image for all the 16 cameras for DVR 1 and 2 side by side image for DVR 2 (total of 36 cameras) viewing through 2 LCD monitor. If you mean incorrect setting of monitor, how do I adjusted it ? there is no adjustment at all on the montior except for contrast brightness etc which have no effect on the double image. Things that I have tried before which include 1) instead of a DVR, I replaced a VCD player using the coxial cable, no problem with image. 2) Running 200 Meter cable from DVR to LCD monitor, no problem But I do have six coxial cable running from DVR location to LCD location of which 2 is use for DVR to LCD monitor, the other 4 cable is not use Any help is deeply appreaciated Kelvin

Dear All, Can I check have anyone done it before, how is it? My main requirement is not wireless camera to DVR, I am running 16 channel DVR outpout video source to LCD monitor which is located at about 150M away, LOS should be consider good. I also have cat5e connected from DVR location to LCD location problems is client consider it to laggy. I also have RG59 cabling from DVR location to LCD location, problem is that is double image on the LCD when on RG59. I try using video amplifier to boost the signal, I try using balun but still cannot improve the double image problem. Now I am betting on wireless transmittion. Any one can propose a better solution? Thanks in advance Kelvin

Dear All, My problem is still not solve yet, today we went down and installed DVD player using the same cable and same LCD monitor The picture came out perfect without any problem, I would presume that the cables are working fine and is able to support the 200 M length. Now what is the probable problem? Grounding ? The only suspicion I have is that the DVD is a 2 pin plug without ground while my DVR is a 3 pin plug with gnd. Could that be the problem? My 32 cameras is installed all over the place, each is powered by a different 230V power 3 pin plug running at 24 Vac (tube camera)or 12 DC (dome camera). Any advise again

Dear All, Any one can give a step by step to test if the cable is ok (using a mulitmeter)? Thanks in advance KT

Dear Tweake, Actually, all the 2 * 16 camera on the 2 LCD screen are having double image. I try to get a pictures for that and upload there. How do I exactly test the cables? Pretty Noob here Regards KT