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cctv_down_under

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Everything posted by cctv_down_under

  1. cctv_down_under

    hi

    A crossover cable is often used to connect directly to a DVR, ther are many other uses but relevancy to the CCTV industry it would be fair to say that a crossover cable is only used to connect your pC device to another when ther is no hub or switch or network device..... IE You can set your laptop to 192.168.0.1 and you DVr to 192.168.0.2 and use the crossover cable between the two to make a network connection which is very handy for testing why a DVR isnt working on a network.... In short if you go to site and use your remote software diurectly connected to a DVR on a crossover cable and it works and it will not work on another computer on the network then something in the network is causing the problem.
  2. cctv_down_under

    140 metres ditance from dvr what cable

    That is really not a very long distance for RG59 and Quad shield RG6 should have no problems...I know I always plug Bosch but if you were unsure you could use an XF camera becasue it has cable compensation and allows RG59 up to 800 Meters, you can actually make it detect the loss and compensate it...voltage is also going to be an issue and a big one if you intend on using small cat5 cables...you can pair a couple of them up to increase the gauge but using good quality 6 or 9 should be ample, you could always run it on the ground first to test?
  3. cctv_down_under

    140 metres ditance from dvr what cable

    140 meters is nothing for a decent camera, RG6 and RG59 (good quality would be fine...but voltage may be an issue) I have seen bad results on Baluns and good results, if you use a cam that has built in ability to read the impedance and adjust it, then even better!
  4. cctv_down_under

    Warehouse

    Plenty of dome manufacturers now have extension poles so that you can mount a dome to them, the one I use has a mounting plate and then a threaded pipe with a flange at the other end that matches the dome screws.
  5. cctv_down_under

    WDR camera for dark room with bright light sources.

    The only WDR's in bosch range are the XF and the XF DN and they both perform very well, the Ganz is good too but screws with the colours. The comment before is right WDR is a statement not a figure and different cameras have different abilities For instance most 10bit cameras can see roughly 512 Light Levels but 15Bit cameras can see 10,000 the same goes for colour range.
  6. cctv_down_under

    Mechanical IR cut filter cameras

    LTC0495 From Bosch works well
  7. cctv_down_under

    Bad Cameras or Operator Error?

    I would have to agree with ZM ...unless of course they were only 12v cameras and you blew them with 24VAC
  8. cctv_down_under

    Weatherproof dome ?'s

    I would have to agree, best to go for a IP66 Unit, but if not then use silicon to seal where the wires go in and place a small satchel to absorb moisture in the dome itself
  9. cctv_down_under

    Sony ex-view in australia

    How many you want LOL
  10. cctv_down_under

    Have you used this brand???????

    Yes - and they are quite ok!
  11. cctv_down_under

    Interesting Geo Gui's

    Anyone got any good Gui's here is one one of my guys has started; http://i19.photobucket.com/albums/b192/Man_Unsighted/redglass.jpg
  12. cctv_down_under

    Interesting Geo Gui's

    Can you beleive that I ONLY now found that peice of software that lets you automate the Geo setup process, IE all the settings and GUI chnages etc, I had no idea you could back up the settings like that and import them in again...had been doing them (well not me of course) manually!
  13. That is not always correct, many DVR products cater for this and for intgergration to many administrative authentication server processes.
  14. cctv_down_under

    Interesting Geo Gui's

    Can I see yours Collin?
  15. cctv_down_under

    Give me a break!

    If I get some time tommorow I will read through this whole article again, however I now feel that this post has become far too argumentative to be constructive, however in summaary I would like to point out some very real and very obvious advantages and disadvatages of both systems and perhaps we can leave it at that. Although I love a good argument, I can not see this post as constructive anymore so by listing the advantages and disadvantages (and to be honest I am going to mention a lot of benefits not mentioned by our learned IP colleague) I hope we can put this thing to bed. Advatages of IP: 1/ IP systems are actually much more affordable (I did not say cheaper, about the same price really) when considering using many cameras over a new network infrastructure, the advantage of running on one network wire as apposed to having to wire each camera individually mean that on very large (and only very large) installs it can be as cost effective to use IP. 2/ IP cameras can do a larger resolution than analogue, although it is rare that on large jobs that you would actually need to do so, nor is it likely that you will be able to use this advantage if you are using an existing network. 3/ A DVR is limited in its location once the wiring is done, an IP camera system can be relocated...even offsite if bandwidth allows, this means that relocations and renovations are easier with IP cams. 4/ IP cameras generally have the ability to adjust more settings than analogue cameras, and although those settings can usally be almost matched by DVR systems, there are a few settings such as dual streaming etc that can be set up on an IP camera that DVR does not support. 5/ Compatability issues, IE mainboards, Northbridge etc is not required with an NVR, therefore upgrades are easier for a NVR compared to a DVR. 6/ When considering a business that has one major site and many small ones, IE a head office of an Ice Cream Business that has many sites that only require one or two cameras, can be installed much cheaper as there is no need to worry about a recording device at each site IE if you had a head office with 20 or so cameras and 30 small shops you do not have to buy 30 DVR's you could use 30 IP cameras and one NVR so long as you have the adequate bandwidth. 7/ Some good IP camera systems allow for transmition of MPEG4 with settings allowing for adjustments like I Frames etc, allowing you to adjust the streaming parameters of each camera. 8/ IP cameras are indeed easier to upgrade than MOST analogue cameras. 9/ IP cameras do not have interlace problems, this is because they are not limited in the capture resolution that MOST (and I say MOST very loosely) DVR systems are limited to due to PCI Bus limitations. 10/ As video analytics evolves we will need much more processing power at the actual camera, this may depend on advancements in actuall PC devices, but if the development of video analitics continues at the rate is currently growing at then a camera with a CPU onboard (most likely an IP camera) will for a short while be able to handle a lot more than the single processor that is in a singe CPU that the DVR requires. 11/ In the world of PTZ cameras, IP has the advantage of transporting protocols over a network in an easier manner than MOST (once again I use the word MOST loosely) analogue systems, this means that there is less of a need for cabling and makes IP PTZ almost as affordable as analogue PTZ but much easier to configure and upgrade. 12/ There is no distance limitation that effects quality for IP camera systems, although it is rare that distance is an issue with some analogue cameras (once again..choosing the right analogue camera is imperative, I tend to use Bosch because they support coax up to 3/4 of a Mile which is fairly rare to require such a distance, and most of their devices have the option to switch to network balun increasing this distance, however there is no need to do this with an IP system. 13/ With an IP system the conversion from Digital to Analogue only occurs once, with Analogue it is convereted to digital for processing then back to analogue for transportation then back to Digital for recording, this is not necessary for IP systems. 14/ Viewing statistics are more readily accesable through an IP sytem than an analuge system. Advatages of DVR systems: 1/ DVR systems do offer very similar networking ability (good ones do) compared to IP Systems, and although IP systems are more flexible, it is rare....other than on large corporate systems that these benefits would actually be utilized, DVR systems can be a PC so there is little that DVR software can not offer that IP can not. 2/ Not every location (Keep in mind we are talking globally, not just Asia and US) has the abiltiy to provide the bandwidth to take advantage of what IP can truly offer, it is important to note that in the majority of the world it would be difficult to stream more than a few cameras in upspeed without exceeding your total upspeed of your connection, therefore the myth of having many cameras without a NVR onsite is not accurate. 3/ DVR's provide MORE redundancy than IP, ISP's can go down, Virus's do occur and networks do crash, there is NO redundancy on MOST IP based DVR systems, having a hard wired solution not only allows you the majority of features found in IP streaming, but offers a redundancy that MOST IP systems can not offer. 4/ There are no compatability issues with Analogue cameras, there are many with IP cameras, the same limitations with PTZ protocols occur and there is NO need for the additional cost of a web server. 5/ All the storage and back up facilities that are offered by NVR's are also available to analogue systems. 6/ DVR's are easy to integrate, they also are easy to retrofit, the replacement of a totally anolgue system to DVR offers the majority of benefits that would be associated with having an IP system at a fraction of the cost. 7/ DVR systems are CONSIDERABLY, let me say that again.....CONSIDERABLY cheaper than IP systems, this is only because IP is new and this will surely change over time, but to install 32 cameras on IP compared to a DVR with analogue cameras is uncomparable. 8/ IP systems are harder to configure than your average DVR system, they do require a network knowledge and they require a systems administrator to support them, this is often not available in many countries 9/ The maintenance and support of a analogue DVR system is limted compared to that of a full IP system. 10/ There are more failure points in a network system then there are with a DVR syetem and a DVR system is much less likely to be affected by outside elements than an IP system. 11/ Analogue HYBRID systems that incorporate the best of both systems are easier to retrofit than a total IP system. 12/ It is much easier to mix and match cameras on a DVR system compared to IP systems especially due to the factor that there are simply a wider variety of cameras that work with every Analogue system compared to compatability issues of IP systems. 13/ IP cameras require considerably more bandwidth than analogue cameras. 14/ Although IP cameras are experiencing massive growth, the lions share of the market is still with DVR this ensures that developments in DVR will match that of IP cameras for the next few years. The value proposition based on the advantages of IP is not yet there and as prices drop for IP systems it will become more prevalant to use IP products but for now the benefits for most situations is not with IP systems as the majority or market share is only in the low to mid end. 15/ When using wireless IP cameras you need to consider the BAND of frequencies available to the IP camera 2.4GHz spectrum can make a difference on how your system works. There’s also the “newerâ€
  16. cctv_down_under

    Low end Night/Day Camera any good?

    Here is a post I put in about this in the forum about the issue I would say it was safe but personally I would not risk it. The 2154 has the exview CCD (not a big fan) so the lux rating is correct it also is a true day/night cam with removable cut filter so the lux is not an issue..it wont be as reliable as soe other well known brands but it should last a few years and is a reasonable camera for the price...happy to sell you one LOL
  17. cctv_down_under

    sony exwave

    CCD Dead Pixels
  18. cctv_down_under

    Major Players in the CCTV Industry

    This is a bit old but it may help http://support.asmag.com/edm/top50microsite/top50_7.pdf
  19. cctv_down_under

    GV 900 and serial number

    Or it cant recognize that the card is there because the driver is no longer installed, this is a common problem if you install the software before you install the card driver, try uninstalling the software tehn install the card driver and reinstall the software...but I think the porblem is your card does not support Version 7
  20. cctv_down_under

    Low end Night/Day Camera any good?

    As far as cheap cameras go that Sunkwang camera is a pretty good one, I used to sell a lot of them, they are OEM'D by many other names. The lense issue should not be a problem between 1/4 and 1/3 but not if you have 1/2 then you would get a ring around the picture. I would not sue IR light in a baby's room becasue the human iris can not see IR light and therefore will not close, small LED's do not put out much radiation but I would be mindfull of pointing it at the baby's face. Swan is a little weird with some models so I can not answer if the lense that you would use for your Sunkwang camera would work on it, but any other full body camera should be fine so long as it is not a Video Drive Iris Lense. Dont quote me, but that seems like an old Sunkwang model here is the new ones http://www.digitalsi.com.au/default.aspx?ProductID=10020 http://www.digitalsi.com.au/default.aspx?ProductID=10013 The Lux rating will change from colour to B/W as the camera does with B/W mode being lower in Lux Glad to see another local in here.
  21. It really depends on quite a lot of things; Qulaity of camera electronics, resolution, type of compression, amount of compression, display resolution, recorded resolution...so it is a very open question. If price is not an issue then IP Megapixel is the way to go for absolute resolution but clarity comes at a cost and that is File Size, the best you can hope for with compression is to purchase something that has MPEG2 compression but once again how much compression depends on each product and the chips they use. What was it that you were not happy with, resolution camera clarity, playback etc etc this might help to get us on the right track.
  22. cctv_down_under

    Stupid Question

    Canada is NTSC VHF=M UHF=M 120 60Hz
  23. cctv_down_under

    NY Install - Need Surveillance & POS

    Sure, fly me there and I will do it for free
  24. cctv_down_under

    Where can we post CCTV videos?

    U tube??
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