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GrouchoBoucho

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Posts posted by GrouchoBoucho


  1. having to drill oversize holes to fit pre-made ends is a pain, but remember, the hole doesn't have to fit *all* of them through at the same time; it only has to fit all but one of the cables, and the last end

     

    that said, kawboy is right, somewhere like a soffit is the best idea, as that's usually easiest to repair/replace later, and doesn't piece the envelope of the building. if you do have to go through a wall, look at mounting a suitably-sized weatherproof junction box over the hole, and run the cables out the *bottom* of the box. this will prevent water from running along the cables and through the wall. use a good outdoor silicone caulk to seal the box against the wall.

     

    also, if you're drilling through a wall, always angle the hole slightly upward from the outside to the inside, so water can't run *down* into the house.


  2. If you are not looking for remote viewing why not go with a camera that records straight to SD card and just put in something like a 64GB SDHC card?

     

    I thought of that, but did not suggest it. There is no guarantee this camera will be checked regularly. A 64GB card may be recorded over every 14-34 hours, depending on the resolution.

     

    It will not help find out who dumped the trash several days (or weeks!) ago.

    horsehockey. configure proper motion detection, don't run everything at maximum quality, and you should be able to get anywhere from days to months on a 64gb card.


  3. with poe, all you need to know about volts/amps/watts is that the maximum wattage rating of the camera doesn't exceed the power available on its switch or injector port.

     

    everything except the ptz is well within 802.11af spec, which calls for up to 15.4w/channel. since you're building from scratch, forget the injector - these are useful if there's an existing switch that you want to use, but in your case, a poe switch will be far easier, and probably cheaper. just make sure you use one that supports the full 15.4w on *all* ports, to account for the 10w cameras (cheaper ones will do full power on half the ports, or half-power (7.5w) on all ports). cisco's small business line are some excellent, robust switches for a decent price.

     

    the only other concern is the ptz; this can be powered off a 24vac adapter. anything rated 40va or above will suffice.


  4. your poe switch goes at one end of the 1300' pipe, your nvr at the other end... connect the two ends via fiber.

     

    So you are saying that for IP 2Megapixel Cameras it can not transmit video in a distance further than 400 feet?

    no. ip cameras can send video anywhere in the world... but you need to build the network properly. *ethernet* is limited to 100m (approx 328') per segment. fiber is probably your best bet in this case; wireless won't give nearly enough bandwidth and will be highly unreliable unless you have unobstructed line-of-sight.

     

    remember that the camera isn't "sending video" as such; it's encoding the video into network data. anywhere you can send the data, you can send the video. it can go over 3g (cellular), over the internet, over fiber, using dsl, etc. but fourteen 2mp cameras will potentially generate a *lot* of data, so the network connecting them to the dvr has to be able to handle that traffic.


  5. After testing some more, I noticed these cables run fine with light, then soon as the night vision should kick in, it just freezes for a second then goes all black.

    the power wires are too small. at that distance, you're getting too much voltage loss once the ir turns on and the current draw increases.

     

    best solution is to ditch the crap system completely.

     

    workaround solution is to run a separate 18/2 power wire to each camera.


  6. [quote="marvincctv"]Hi DC12V is one very low voltage. With our test result. If the DC12V is powered with net cable, the longest distance only can touch 8 meters. If longer, the camera won't work for the outpu voltage already lower than 6 voltage. 50 meters is also one long distance for RS485 communication. RS485 is voltage signal from 4V to 9V. Marin [/quote] i think you're in the wrong line of work. this information is so wrong, it's beyond laughable.

  7. Looks like there's a wide array of dash cameras out there, but they all seem to use self-contained storage - as in SD cards and, preseumably, stop working once a card is filled.

     

    What would appeal to me is a "set-it-and-forget-it" cam where it has maybe 64 gigs of storage and keeps rotating the storage. Maybe 5 or 10-minute clips, deleting the oldest clips when storage is low.

     

    Ignition-switch-controlled would be nice too - so it shuts off once the ignition is off thereby preserving memory after a crash.

     

    Does anybody have links to sites that show more sophisticated setups? Maybe a dash-cam NG?

     

    Or is my assumption wrong about the use of storage and most cams already rotate storage?

    your assumption is wrong - every dashcam i've seen cycles storage, continuously overwriting the oldest video. most use sd or micro-sd cards, which you can get in up to 32gb with sdhc spec, and 2tb with sdxc (make sure the specific camera supports these specs). sd cards *are* generally removable - not "self contained".


  8. So I guess you don't use the one you recommended then.

    i don't use or recommend wireless for video. period.

     

    One wire? How about many wires in many directions.

    your original post said you wanted to run from the dvr to *two* tvs. two does not constitute "many".

     

    No way could I run a wire from the top floor(third) back loft to the ground floor front kitchen or even the basement and the separate garage.

    there's *always* a way.

     

    I can give access to my neighbors who only have to purchase cheap receivers which I have several that work great.

    your original request said nothing about sharing with the neighbors - your wanted to run to *two* tvs in your own house.

     

    I was successful in the past using cheap 2.4 GHz but it caused gross interference with Wi-Fi all up and down the street.

    i wouldn't really call that a success... "o hai neighbor, sorry about f***ing up your wifi, but look, you can view my cameras now!"


  9. that is sure a *lot* of screwing around just to save a few bucks.

     

    first of all...

     

    plus the PoE cams are expensive

    almost all ip cameras support poe, cheap ones included. you can also put a poe "splitter" at the camera end to break out dc stepped down to 5v, 9v 12v, etc. for devices that don't do poe.

     

    second...

     

    i like to keep costs low as possible.

    what is your time worth? how much time have you spent now trying to figure this out, sort out your voltage losses, etc., when you could have just used a poe switch or injector and been done with it?

     

    If you don't want the cost of POE. Then just use cat5 shotgun cable .

    and what is the cost of that vs. simply using poe injectors?

     

    now i know there are POE type ipcams but it requires PoE switch or booster and all that.

    poe injectors can be had for under $50: http://dx.com/s/poe+injector - i've seen them as low as $15 elsewhere. this one will do two cameras for under $44 (or $22/camera): http://dx.com/p/48v-500ma-dual-port-48w-power-over-ethernet-poe-adapter-black-115419. this one is barely over $20: http://www.amazon.com/TP-Link-AC-TL-PoE150S-PoE-Injector/dp/B003CFATQU/ref=sr_1_4?ie=UTF8&qid=1361951891&sr=8-4&keywords=poe+switch

     

    or for under $60, you can get an 8-port switch with four poe ports: http://www.amazon.com/TRENDnet-8-Port-100Mbps-Switch-TPE-S44/dp/B000QYEN1W/ref=sr_1_1?ie=UTF8&qid=1361951891&sr=8-1&keywords=poe+switch

     

    or you can keep wracking your brain trying to figure out why your hack job doesn't work.


  10. Two grand for four channels? Quite steep, especially when you consider HD-SDI cameras are priced in the same ballpark as IP cameras.

     

    Marshall's VS-541-HDSDI - 2.0MP 20X Zoom IP Box Camera is $2k. I can buy three or more 2MP IP cameras for the cost of one of their HD-SDI cameras. Adding an HD-SDI encoder puts that even further out of reach, with virtually no benefit over IP. Even adding EoC converters to the mix would still leave full-IP at approximately $800 to $1,00 per channel versus HD-SDI at $2,500 per channel.

    i still haven't seen anyone address your other point at the very top of the thread, and is, what vms's would even support the sdi-to-ip encoders? it's all well and good that you could drop a couple grand to convert your sdi cameras to ip, but it doesn't do much good if you don't have a vms or nvr that can record that stream.


  11. the card looks like a geovision, although it's hard to say if it's a legit card, as the proper ones will usually have a hologram sticker and a serial number on them.

     

    assuming it's a legit gv card, you should be able to contact geovision to request the latest software (drivers included), but you will have to provide the serial number.

     

    if there's no serial sticker, there's a good chance it's a 'grey market' geovision knock-off - good luck ever getting it to work properly.


  12. cameras will not *stop* prowlers, and only *may* deter them. a better deterrent is to add some motion lighting so the bright lights coming on makes it hard for them to hide. if there's nothing else around at night to trigger falses, you could even rig an alarm siren to the light as a further deterrent.


  13. yeah, that's a great idea - instead of picking the proper camera for any given usage, always use the same brand as your vms. might as well go back to a f**king costco package system with proprietary connectors.

     

    you know, there's one major vms i work with (which shall remain nameless) that has their own brand of cameras as well - well, they're actually oem'd from a well-known asian name - and they're horrid in every regard. pita to install, pita to configure... firmware updates not only break integration, they also sometimes break the setup utility. at least twice i've been sent to site with a new model of camera and found the version of the setup tool i had wouldn't work properly with it.

     

    'always use the same brand vms and cameras' - what a cop-out.


  14. I think after reading some of the feedbacks from the forum members,

    I can conclude Nuuo technical team does not bother to update Nuuo

    software to be fully compatible with the latest camera firmware.

     

    Seeing that Nuuo support a ton of well know IP cameras in the market,

    I suppose they couldn't afford the time nor the manpower to keep

    updating its VMS software to work with firmware updated cameras.

    If they do, they will do it haphazardly and not thoroughly.

    you should do a big favor for the avigilon boosters, and avoid it as well. i foresee the first time some third-rate camera manufacturer updates firmware and breaks avigilon support, you'll be in here ranting in big letters that avigilon should have seen it coming and prepared for it months in advance. i just imagine the tear you'll go on when they don't dedicate every resource they have to fixing the problem within minutes.

     

    avigilon fanbois, you may mark my words.

     

    some people will never be satisfied.


  15. try stringing a piece of cat5e across the ground and connect it up, see if that solves your problem... if so, at least you know what it is, even if it's a pain to deal with. if not, then you can rule out that it's the type of cable.

     

    doubling up pairs won't help - there should be one pair per balun.


  16. On the monitor inside when viewing any camera I can see the images from the other cameras strobing across the screen. Looking online I can see what is refereed to as crossbleed or ghosting.

    sounds like cross-talk between the pairs. i'd suggesting using cat5e instead of this 10-pair; the pairs have different twists so you don't get signals induced into adjacent wires.

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