sparky83 Posted March 9, 2005 Share Posted March 9, 2005 We always use Cat5 and baluns if we have to but we were told that if its a short run using Cat5, then you may be able to get rid of the baluns altogether - is that true and does it work?! Never tried it without just wondering if you guys have? Trade Member Link to comment Share on other sites More sharing options...
ian.cant Posted March 9, 2005 Share Posted March 9, 2005 We always use Cat5 and baluns if we have to but we were told that if its a short run using Cat5, then you may be able to get rid of the baluns altogether - is that true and does it work?! Never tried it without just wondering if you guys have? Sure of course it will work, i sometimes use belden on coverts to hide the cable so to speak but only for 20/30 mtrs max. Link to comment Share on other sites More sharing options...
breff Posted March 9, 2005 Share Posted March 9, 2005 Ive had a decent picture on a doubled up alarm cable!! Check to make sure you are using a twisted pair for each camera, if you have a crossed pair you will get crosstalk. The opinions I express are mine and are usually correct! (Except when I'm wrong)(which I'm not) Link to comment Share on other sites More sharing options...
securitycctv Posted March 10, 2005 Author Share Posted March 10, 2005 Thanks to all for the input. I am back on site this morning and will try out several suggestions. cable being used is unshielded and run is about 200 metres John Link to comment Share on other sites More sharing options...
Mavrick_001 Posted March 10, 2005 Share Posted March 10, 2005 I have had the same kind of problem. Solution is to use single baluns as suggested, or otheriwse if possible run 1 camera down 1 cat 5. this usally solves the problem.I think it depends on the kit being used. Some installations are ok with the multiple camera setup, without getting too tech on the subject I'd suggest them as your options. Funny how on twisted pair installtions with domes I never have this problem..... quality of kit??? Good luck.... CCTV Intruder Access Control Tony Hughes, Proprietor, TRADE MEMBER Link to comment Share on other sites More sharing options...
ian.cant Posted March 10, 2005 Share Posted March 10, 2005 I have had the same kind of problem. Solution is to use single baluns as suggested, or otheriwse if possible run 1 camera down 1 cat 5. this usally solves the problem.I think it depends on the kit being used. Some installations are ok with the multiple camera setup, without getting too tech on the subject I'd suggest them as your options.Funny how on twisted pair installtions with domes I never have this problem..... quality of kit??? Good luck.... 43419[/snapback] Quality of baluns maybe, certainly not quality of CCTV kit. Link to comment Share on other sites More sharing options...
SystemQ Posted March 11, 2005 Share Posted March 11, 2005 That is a symtom of having a pair crossed over. Each signal must go down an individual twisted pair. Instructions attached. Hi all. I have a problem with a 4 camera in to 1 cat 5 transmit receive unit. If you connect one camera - picture fine connect 2 cameras picture goes like it has interference. Does not matter which is plugged in either works fine on its own but not with 2 together. Only using 2 cameras and does not make any difference which of the four ports are used. Type is TTP414V which has 4 x BNC on front and 1 x CAT5 socket on the back or the the option to hard wire the CAT5 cable instead Any thoughts from anyone ?? John 43138[/snapback] xcon817.pdf System Q Ltd. Link to comment Share on other sites More sharing options...
SystemQ Posted March 11, 2005 Share Posted March 11, 2005 send an email to eback@systemq.com and put BALUN INSTRUCTIONS in the subject line and our automated response service will email you the instructions for this device. That is a symtom of having a pair crossed over. Each signal must go down an individual twisted pair. Instructions attached. 43488[/snapback] System Q Ltd. Link to comment Share on other sites More sharing options...
baywatch Posted April 13, 2005 Share Posted April 13, 2005 Strangely like Mavric we have also had some of the best results with Cat5 & baluns when using 3 x speed domes down 1 x Cat5 with the telemetry. We have one large transport yard with 9 speed domes working down 3 x Cat5 up to 300 metres & all working perfectly. No idea why? Link to comment Share on other sites More sharing options...
ian.cant Posted April 13, 2005 Share Posted April 13, 2005 Strangely like Mavric we have also had some of the best results with Cat5 & baluns when using 3 x speed domes down 1 x Cat5 with the telemetry. We have one large transport yard with 9 speed domes working down 3 x Cat5 up to 300 metres & all working perfectly. No idea why? 48462[/snapback] Twisted pair and video baluns is not new technology, its just been perfectedover the last 5 years or so. I can recall a shopping centre in Washington that used it like 10 year ago but they changed to microwaves eventually as it wasnt so good then. BTW 300 mtrs for cat5 and baluns is just a short run. Link to comment Share on other sites More sharing options...
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