Erock509 0 Posted November 28, 2008 Ok well I have a 4ch stand alone dvr(DW-Max 250gb), and purchased 3 LTS cameras(DVCCMNV848 - Infared Weatherproof Vari-Focal Bullet Camera). I am going to have an experienced person help with the install, but when I have all the stuff sitting in front of me its kinda hard not to tinker with it. So what I have noticed seems like a problem to me and thats what I need help with. The rear of the DVR has 4 connections for the cameras(the rear of the dvr can be viewed here- ftp://ftp.dwcc.tv/Support_Tools/Quick_Start/MAX/MaxQuickSetupGuide.pdf) The cameras have one wire coming from them that splits into two, this is what the camera specs say not sure if related, Video Output 1Vp-p, 75ohms. Y/C Separated. One red and one yellow wire, I think one is power and one video. Most of the other dvrs I looked at have a BNC? connection and a loop? connection for each channel/camera. So how would I connect my cameras to the dvr? Share this post Link to post Share on other sites
Erock509 0 Posted November 28, 2008 One thing that I thought of but not to sure of it, is I did buy a 9channel power supply box w/ battery. Was thinking the power part of the camera could hook up to that and the video to the dvr?? Still not sure though, just trying to figure this out. Power Box-DVCPBD10R - Power Supply 9 Channels w/ Battery Pack Option Share this post Link to post Share on other sites
Erock509 0 Posted November 28, 2008 With a little research I think I figured out my own problem. I need a bnc cable w/ power, bnc hooks up to the camera to the dvr, power hooks up to the camera power then to pt-3 cable, pt-3 spliced end to the power box. http://videos.cctvcamerapros.com/surveillance-system-setup/power-supply-box.html Share this post Link to post Share on other sites
Soundy 1 Posted November 28, 2008 Most likely, the yellow is video and the red is power, but a description of the actual connectors would help... "Y/C separated" would normally refer to S-video signal output, but that would be VERY uncommon for surveillance cameras. If the connector on the camera looks like this, it's probably power: If it looks like this, it's probably video, or possibly audio: BNC is 99.99% likely to be video. Share this post Link to post Share on other sites
Soundy 1 Posted November 28, 2008 If the cameras are 12VDC powered and use the jack pictured above (top pic), then all you need is a small "wall-wart" adapter for each one. They may not be as "elegant" as the "Power Distribution Box", but they're a lot cheaper and easier to find. You know the type: 99% likely that those cameras are 12V, tip-positive, and won't require more than about 300mA (maybe 500mA if it has IR LEDs) - those sorts of power supplies are almost literally a dime a dozen. http://www.rpelectronics.com/English/Content/Items/RP-1250-P.asp for example... Share this post Link to post Share on other sites
Erock509 0 Posted November 28, 2008 Thanks for the replies. Yeah I got the power box for possible emergency backup during a power outage. All I need now are some bnc cables w/ power and pt-3 cables to hook up to the box. In total I added up I can get these supplies for rather cheap, and the job should be fairly simple. Your way would have worked too if I didnt already have the power box, good info to know though. thnx Share this post Link to post Share on other sites
Erock509 0 Posted November 28, 2008 Ahh, one other thing I thought of. How the heck is my system going to keep running during a power outage if my dvr is plugged into the wall? It will be nice to have battery backup for the cameras and neat running wires, but can the dvr somehow be connected to power box as well? Share this post Link to post Share on other sites
Soundy 1 Posted November 28, 2008 Yeah I got the power box for possible emergency backup during a power outage. Er... perhaps you could clarify what you mean by "power box"? Because the one they show in that video would not operate during a power outage - it takes AC in, steps it down and regulates it to 12VDC, and splits it out to a number of fuse-protected outputs... if the power goes out, that box does too. If could PROBABLY run it all off a 12V battery, since DVR and cameras are all 12VDC, but then you need a way to keep the battery charged while the power is on. Your "power supply box" would need to be able to supply enough current for the DVR *and* cameras when the power is on, as well as enough to charge the battery. The PDF you linked doesn't state what the DVR's current requirements are, but I'd expect it to be AT LEAST 3A... estimate up another 500mA each for the cameras, and you're up to almost 5A... and then allow another 100-200mA for charging current (resistor-limited) for the battery. In the end, you may find it simpler to just plug everything into a standard home-office type (350-600VA) UPS (uninterruptable power supply, not the shipping company) to keep the power up during brief outages. Share this post Link to post Share on other sites
Erock509 0 Posted November 28, 2008 The power requirements for the dvr stated DC 12V 3.33A Adaptor. The battery options are: Rechargeable 12 Volt 4Ah, and Rechargeable 12 Volt 7Ah. This is what the power supply box stated: is a high power AC/DC power supply. This battery will provide additional power source when there is power outage, the working period will be upon the capacity of the rechargeable battery. When the battery is low, it will recharge itself until it is full. A rechargeable battery can be installed as an option. Input 115VAC, 60Hz 4A Max Output 12VDC, 10A Output Power 120W Hope this may clarify some specification questions. Any more input would be great, thanks. *Edit*: could you please also list a UPS that would suffice for my system. Share this post Link to post Share on other sites
