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  1. Last week
  2. Opeth

    Waves on monitor

    Ok larnaca is free area. Im living in Limassol. Want to inform me about the store when open. I would like to see your items
  3. tomcctv

    Waves on monitor

    Hi. Baluns or ground loop devices will not help you. you can’t alter ntsc format cameras you are fortunate that you can change the format on your recorder for each format ... not all dvrs give you that option Larnaca. North old Cyprus
  4. Opeth

    Waves on monitor

    Wow. North Cyprus is occupied by Turkey. How about the baluns? Can you tell me a good quality video power balun to change them? Maybe are them the problem
  5. tomcctv

    Waves on monitor

    Hi. Forget about ground loop that would not fix pal/ntsc format problems ..... and ground loop is not a problem with HD anyway noth Cyrus is going to be our location
  6. Opeth

    Waves on monitor

    Can you explain why when i change some of them from pal to ntsc all shows perfectly clear? Without any ground loop isolators?
  7. tube tech

    Waves on monitor

    waves in monitor is typically a ground loop. one ground loop can affect many cameras. take all off line but one, then add them back one at a time until the ground loop shows up. try the camera that ground loops by itself ground loops are typically fixed with a video isolation transformer. I have a ground loop from a camera with a broken ground connection inside the camera. when it ground loops it takes out a second healthy camera on the same DVR. this is not a straightforward troubleshoot and fix situation.
  8. I haven't paid so big attention to this until my client asked why downloading a video file from different Dahua models in same network is so much slower. He has HFW4431E-E3 and HFW5541T-ASE-0360B. Sandisk 128GB cards in both models. 5541 is ok to load, 250MB clip takes around 3 minutes. In 4431 ~ 3 hours. He's using SmartPSS. I tested this also with my own old NVR4116H. Downloaded a mp4 and dav files, both 250MB, takes around 3,5 minutes with SmartPSS. Then I tried the same also via web UI. Time was quite the same, but web UI tells the speed also. It was around 1200kB/s. Well, actually I have always thought that downloading files even in LAN from my NVR has been slow, but now to see it in numbers - that's nothing! 1Mbps. Seems that NVR network load is ~52Mbps, and that's RX, so there should be plenty of room for download TX. Is it just that NVR or camera's CPU is so loaded that there is no capacity for better transfer speed? In camera, is the SD card occupied with writing that there is no faster reading possible? And in NVR, hard disk... Anybody studied this more?
  9. jeromephone

    LIGHTNING PROTECTION FOR OUTDOOR IP CAMERAS ON METAL POLES

    Look on Ditek's Web site
  10. Earlier
  11. Opeth

    Waves on monitor

    Where you will open an outlet here? Which town and when?
  12. tomcctv

    Waves on monitor

    Not only do cameras have switchable pal ntsc in there menu dvr also has the option on each channel they need to match so if your having to run some cameras NTSC then regional setting on that channel is set to NTSC
  13. Opeth

    Waves on monitor

    Yes i know that in my country is pal . My dvr is running pal but why some cameras in format pal has waves in it and wgen i change it to ntsc shows perfectly clear? Is anything else go wrong with my installation?
  14. tomcctv

    Waves on monitor

    Hi. Some countries have different broadcasting formats also different hertz your in Cyprus which is PAL system and is also same for rest of Europe PAL NTSC and SECAM are also know as regional formats PAL Europe NTSC is America SECAM is Russia China India but also use PAL but secam and pal cant be used on same system. always buy PAL for your region or at least a system that can be switched. Always check when buying. we will have a outlet in Cyprus soon.
  15. Opeth

    Waves on monitor

    From 12 cameras 5 have these waves. The only solution i found is that i change the format from pal to ntsc. This stopped the waves but i dont know why. Can anyobe explain this?
  16. tube tech

    Waves on monitor

    disconnect all but 1. if the waves are gone, put the rest on line one at a time in my system this was caused by a camera with a flaky ground inside.
  17. tomcctv

    Waves on monitor

    Hi. What is the footage like on playback.... does it still give you same problems
  18. Opeth

    Waves on monitor

    I take a video but i cant upload is too big
  19. Opeth

    Waves on monitor

    Anyone can help? Is it groun loop problem?
  20. I need system design for lightning protection for outdoor cameras on metal poles. Drawings and explanations will be appreciated. Thanks
  21. My client has Milesight NVR MS-N5016-UT. How can we get RTSP stream out from the NVR? In the settings RTSP is mentioned and there is a port 554 for it as a default. I have tried with VLC but it just gives an error. When trying directly to all Milesight cameras connected with that NVR, RTSP works perfectly. Do we need to set some more permissions or does the URL need to be special? In NVR manual RTSP is mentioned but there is no further instructions how to use it..
  22. Had the same problem.3 of 12 cameras has horizontal lines. But i change the format from pal to ntsc and seems that fixed the problem. I cant explain that
  23. Cape Cod

    Networking Course

    Hi, I'm looking for recommends on a networking course directed towards small networks and IP video security.
  24. tomcctv

    samsung cameras dead pixels / dark spots

    Hi. Dead pixels would not show like that and is something that does not happen. Having 11 cameras out of 15 is also a indication that it’s not dead pixels there is only two reasons to have images like yours and it’s an easy fix first one is a common fault when you remove and install a system .... and I’m 95% this is your problem on standard analog you also have on each camera a regional setting. NTCS or PAL You will see these settings under camera settings NTCS = America PAL = Uk/ Europe second is in image settings which is called either Denoise or wide dynamic both of which if set to high will give you the same image as yours .... but unlikely to be on a analog system
  25. Hello everyone, I recently got 15 Samsung SDC-7340BCN cameras. A family member used these cameras at a workshop for about 5 years. While testing the cameras I saw that some of them have a bunch of "dead pixels" or black dots covering the image. It looks like TV static except the black dots don't move. After testing all of them, 11 out of the 15 cameras had this issue, with some worse than others. I uploaded two pictures showing this issue - in one picture the camera is facing a white wall, in the other its facing a desk. As you can see, the dead spots render the cameras completely useless. I tested the DVR, BNC cable, and power supply with a known good camera they all work just fine. Has anybody seen this before? It looks to me like the image sensors are going out on these cameras but it could be something else. What I don't understand is why so many of these cameras failed in the exact same way - 11 out of 15! What are your thoughts? Is it fixable? (I doubt it but its worth a shot)
  26. gwladok5

    Time for an upgrade?

    Hi! I've got several Hikvision DS-2CD2142FWD-I cameras. I'm looking to replace (some/all) What's the benefit of "darkfighter" & do they do a replacement worth having?
  27. Hi everyone. Yesterday i installed a system of 12 cameras hdcvi. I used dahua xvr5116hs-x, 2 hfw2241t-z-a, 1 hfw2241e-a and 9 hdw1200em-a, for cable i used cat6 23awg and video power baluns. My problem is that on the monitor (brand new monitor 1920x1080) shows waves on the cameras but from the application p2p it shows perfectly clear. My cable distance not exceed the 30 meteres the longer camera. I checked the voltage on every camera and it is ok to 12,5vdc. My power supply is 12vdc 15 amp it is very enough. Can anyone help me with this?
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