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mgb

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Everything posted by mgb

  1. mgb

    new home CCTV design

    Easy decision. Go with the IP using the Cat 6. Its the top option.
  2. I always label the camera by what it's viewing. In a residential setting, it's easy enough to keep track of the cameras if troubleshooting is needed. In commercial settings where you may have 50, 100 or more cameras, I set the device name based on where it is and what it's viewing and then a simple overlay text on what the view is. You can also mark each camera in an inconspicuous spot with a ptouch label of the last octet of the devices ip Adress. Just for troubleshooting purposes.
  3. You should be ok running those cables as long as they're out of the sun and elements.
  4. no, you actually have that backwards. (and I know I wont explain this well ) the way I learned it was that the way the emi emanates around the power cable would carry onto the data cable run along side but crossing over, you are going perpendicular thereby not within it so it doesn't carry on to the data cable. I know I didn't explain that well but when I learned it, there were handy little illustrations that I don't have now. of course the twisting of cables helps as well. but in the case of the op here I would say the point is moot based on the fact that they are talking about drilling along side the window, so I'm guessing they're not going in the walls any way.
  5. I have read this information from Pelco with interest and sadly it is a simplification of cable specification. DC resistance is not a main factor when considering analogue video transmission over coax, dB loss at the 5MHz point is the most important factor, a total loss of 6dB including connectors and joints is considered to be the maximum allowable. In addition high frequency (HF) loss is the first to occur with longer cable runs, the high frequency component of analogue video which contains the picture detail, which is why when you speak to installers who claim to be able still get a 'picture' at 750m+ on RG59 the resulting image is lacks any detail. There are ways of measuring this with specialist pattern generators and a oscilloscope, a skill that sadly they do not teach CCTV engineers anymore. Ilkie that may very well be true. this is just a general rule that I don't much find important anyway because all my commercial work is IP and my side jobs that may be analog will seldom have runs over a few hundred feet. the op asked if 300 feet on rg59 would be ok and I think we all can agree that this is fully possible. These numbers aren't only put out by Pelco. You mention 750 meters, but I said 750 feet which is a huge difference. I understand that these numbers are probably on the high side but I would like to know then what you guys think the hard line is on distances for these cables
  6. just to clarify a bit: any poe camera that I know of also has a power input jack so you can either use poe or the apropriate plug in power (typically 12 volts dc, 24 volts ac or for a few odd balls, 5 or 9 volts dc) the pattern of any wiring counts as those are the paths by which things flow. This applies to cat 5 or 6 data cabling as well as to dc voltage power supplies and even analog coax video cabling, its just harder to get out of pattern with coax.
  7. stick with cat5e stick with solid wire (not stranded) stick with 24 awg stick with no foil or shield don't run right along side ac voltage and you'll be fine
  8. I'm looking for any info/feedback on Speco Technologies IP camera line. Most specifically, the zipkit4D1. I'm not typically interested in package deals but the price on this kit from my local supplier makes it more cost effective and easier for residential installs. The cameras that come with the kit are not any of Specos regularly available cameras so I'm not real sure on all the specs other than they're 3.7mm ir 2mp domes. I have used Speco's analog cctv and audio lines in the past and they always seemed to work well enough but it's been a bit since I've used their stuff. Any help would be great. Thanks.
  9. You can use a multiplexer with loop throughs at the hotel. The multiplexer has monitor outs for local monitors. The lines from the cameras would connect to the multiplexer then from the loop through a, the lines would go to the office's dvr. Alternatively you can go with multiple DVRs, having an 8 channel at the hotel (with loop throughs) and a 16 channel at the office.
  10. mgb

    DVR Power supply

    Agreed, I think the op is not happy with the fan noise. I also have seen hard drives go from improper shutdowns so I'm always a little weary of DVRs just being shutdown abruptly through power loss. Chances are good, nothing bad will happen but why take the chance.
  11. On this job, the customer wants HD so I'm going with IP. I have no problems on the cabling and setup end, as this is what I do for a living. I've done alot of analog and IP and I don't really find cabling for either (cat or Siamese) to be harder to run than the other but I do prefer running cat5e for Poe ip cameras. For my full time job, we work in commercial systems so alot of my work is ip but on my side work, I deal with primarily residential so selling ip is harder but I'm finding more people are wanting it. Those cameras from the zip kit, however are not fisheye. They're 3.7 mm which is a pretty general wide fov.
  12. Thanks for the reply. Thinking about prices, I'm sure your right. I should be able to get a hik or Dahua for the same or better. This kit is at ADI and I like the support I get there as far as returns and all so I was hoping but I've got another supplier right in the same area who sells Hikvision and Dahua at lower prices than ADI so I'm gonna give him a shot. Thanks
  13. mgb

    DVR Power supply

    First off, when shutting it down, you'd be best off to not just pull the plug but select shutdown on the dvr (usually accessable by right clicking mouse and logging in on many dvrs) This is just to properly shutdown the hard drive. Then beside that, why not just plug the dvr into its own plug strip. You can the just hit the power switch on that if you need to.
  14. mgb

    Another New Guy

    Hello, I hope you get your questions answered. Happy learning
  15. Take your pick. That describes almost every 16 channel dvr. Those are pretty standard features. Check out Hikvision and Dahua for bang for the buck. Ptz control doesn't really go with the dvr, the video for the ptz does and the control would be to a joystick or another device.
  16. mgb

    motion detection

    Another example is where someone may record all the time at a lower resolution or frame rate (basically how smooth the recorded motion is) but then upon motion, they can have it set to go to a higher resolution and or frame rate. a business may want everything recorded during business hours but only motion at night when no one should be there. The main benefit to using motion only recording is to save room on the hard drive.
  17. mgb

    motion detection

    That's one way you can set it up. You can program it so that it only records on motion.
  18. Raw wire without the ends already on does make installing the cable easier with smaller holes. If you decide you have to use pre made cables, can you bring the wires through your attic into the eaves where larger holes may be less noticeable than beside a window.
  19. mgb

    motion detection

    The camera (or recording device) reconizes movement within the view and you can set it to do things based on that like record or record at a higher resolution.
  20. The 808 does have 16 alarm inputs as well as 3 normally open outputs so theoretically, I guess you can rig something up for notification but really those inputs are typically meant for recording activation as already mentioned. You really should look into a proper burg system of some type for alarm system use.
  21. Another option is the Secolarm UFO cameras. Theyre 3.7mm lens. They're white but you can paint them black if needed. They're $55 wholesale
  22. I think you'd be best with one of the varifocal models so you can really set it in on the sweet spot. The problem is that with getting license plates properly, your aim will be lower and you may not get a view if the overall area. This is why, a true license plate setup would involve two cameras. One aimed tight at the plate are and one for overall area. There are also specialized LPR cameras. I would say you'd be better off with a 2 or 3MP rather than a 720P if you are looking to get coverage of the whole vehicle.
  23. It's free. That should sum it up. The free software is axis camera companion which lets the camera do the processing. Axis camera station is their vms that does the processing and requires a paid license for each camera. I think MSRP for eleven licenses is around $1200. I was wondering if anyone has concerns with camera station (VMS you have to pay for) Wow, Axis charges for connection licenses for their own cameras on the full VMS? I know axis makes a good product but that's a bit crazy.
  24. Just a couple of things that kind of stick out. Even though the power led is lit, is it possible you're getting alot of drop? Can the camera be powered over 24vac? Maybe try that. You can even use a 28vac power supply to push it. It just seems odd that it worked until the camera was actually mounted. Assuming you tested it from one end of the wire to the other. I also would try a 2A or better psu. Have you tried bringing the psu right to it with an extension cord or using an alarm battery?
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