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leachim

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Posts posted by leachim

  5. Posted

    I used a separate 12v power supply at the camera end to no avail

    So it has to be the coax ?

    We had a nightmare running the coax 140m through ducting, attics, roofs of buildings, between telegraph poles to get it where it is !

    Laying a cat5 similarly is daunting !

    OK, There is wireless internet at the camera end   (not same wireless that is near the Hikvision box in our house)

    Could I obtain a wireless camera and then somehow tell the Hikvision box to communicate with it..... ?

  6. Posted

    1 hour ago, tomcctv said:

    Ok 12v 5amp total 🟰 0.5 amp each

    this is pushing you power to the limit if not over

    12v 0.5amp can not go 140meters (450ft)

    voltage and current drop 

     

    but that power supply is adjustable and you can get 14v out of it  which is why it worked 

    and it’s not allowing that voltage anymore …. You can try altering the voltage again by turning up the yellow voltage pot  indicated we’re it says 12 adj (hole next to it)

    but you are under powered and you always have been for 140 meters

    are you in the uk

    Yes in Devon

    To be fair, we have a camera on FURTHER 50 m than the camera I am on about, and the image is dodgy, but works

    Have tried a separate 12v ps in the camera, and still no joy - measuring 12v when plugged in

    Also tried a separate camera with the same connections and no good.

    Got to be the coax ?

    This is what I did initially :

    "Latterly have disconnected both ends of the video cable - then joined the earth braid and live together at one end

    Went to the other end and used an ohms meter to check the reading over approx 280m  (2x140m) - by one probe on the signal centre and another probe on the earth braid- it was 15 ohms"

    Is that good or bad ??

  9. Posted

    On 4/28/2023 at 4:29 AM, zapdivvy said:

    I detached the video cable from both ends, united the earth braid, and moved in with my partner at one end. I went to the other end and checked the reading with an ohms meter across a distance of around 280 meters (2x140 meters), and it was 15 meters. Is that what you would anticipate across that cable run, then?

    drift hunters

    Not sure what planet you are on, or what you are smoking...

    What's the point in half quoting my initial query and then messing it up ??


    Anyway, anybody got an answer for my original question from March 5th ???

  12. Posted

    On 3/5/2023 at 11:24 PM, tomcctv said:

    Ok so what is the 12v for 150m is still too long 

    what amp is drawn

    and what connectors are you using BNC to scart or RCA

    Oops

    Just seen this reply....

    12v is to power the camera

    BNC connection for video. Has worked ok for a few years. It takes the signal back to a cctv recorder - Hikvision

    Am wondering if the analogue cable is breaking down. 

  14. Posted

    17 minutes ago, tomcctv said:

    Hi 920ft is a big distance to run monitor over without a signal booster

    what connection is at monitor end and dvr end

    also why having 12v ? Over that distance you will be lucky to have 6v

    Thanks

    The run is about 460ft 

    It worked ok before

    It isn't 920ft - I joined the earth braid and the centre copper wires together at one end - so that when I go to the OTHER end and put a probe on the copper and the other probe on the earth braid - the signal has to travel 960ft (2x460ft) to get back to the other probe - this is 15ohms

    Just to see if there is a break in the cable

    Is 15ohms ok ?

    I can measure 12v ok at the camera end

  15. Posted

    I have a long stretch of monitor cable - probably 140 metres (2 sections - centre signal with earth braid - and also 12v positive and negative)

    No signal is getting through to the monitor

    It used to work

    Cable has been up 10+ years

    Have tried various modalities like cleaning contacts

    Latterly have disconnected both ends of the video cable - then joined the earth braid and live together at one end

    Went to the other end and used an ohms meter to check the reading over approx 280m  (2x140m) - by one probe on the signal centre and another probe on the earth braid- it was 15 ohms

    Now, is that what you would expect over that run of cable ?

    Thanks

  16. Posted

    I have a long stretch of monitor cable - probably 140 metres (2 sections - centre signal with earth braid - and also 12v positive and negative)

    No signal is getting through to the monitor

    It used to work

    Cable has been up 10+ years

    Have tried various modalities like cleaning contacts

    Latterly have disconnected both ends of the video cable - then joined the earth braid and live together at one end

    Went to the other end and used an ohms meter to check the reading over approx 280m  (2x140m) - by one probe on the signal centre and another probe on the earth braid- it was 15 ohms

    Now, is that what you would expect over that run of cable ?

    Thanks

  17. Posted

    Hi

    I am hoping to add a camera to my existing  Hikvision Box via a cable that has 12v and video wires

    The camera I want is one that I can hopefully control to move around in a circle

    What does anyone recommend and how can I control the movement of it ?

    There is wireless internet close by

    Thanks

  18. Posted

    I have a Swann 9 Channel DVR connected to a router and I am able to pickup images on my computer using the swannlink software (also phone)

     

    There seems to be a time lag of around 1 minute of live action and quality is poor

     

    I had a different make before and it was fine

     

    Any ideas ?

     

    Thanks

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