cctv_down_under

From memory, you do notneed to with lilin domes, however you could put an end of line resistor inbetween the txo- and txo+ you would need to know the correct value of the resister. I know the Austrlalian office of Lilin actually use Geovision, so perhaps call them. http://www.meritlilinpacific.com.au Ask to speak to Russell.

Each chip has 4 inputs, the video is multiplexed into these chips, for example chip 1 has inputs spread across the whole dvr quite possibly the first input from chip 1 the second input from the second bank and the thrird from the third bank etc. The same goes for B/W and colour cameras...BW has smaler size and if you do not do this you will end up with this effect -_----_--_---_ The smaller being BW and the higher being colour...when you should do this. ---_---_---_---_ So that a pattern is kept and the system does not have make such severe adjustments ..also setting them like this... ------------_____ Can help.

It may b for rs485 with an adaption plug

cyber domes are ok, but I would go for the one that has the most warranty as there are a lot of moving components, i have used the Merit Lilin ones and they are ok, but low warranty and have seen some needing maintenance, the Bosch Autodome is quite reasonably priced, you will need low light because you will be zooming and therefore affecting the light coming into the camera.

I have seen some faults..but not with that brand where a tour becomes currupted becuase they turned on manual focus during the tour... also I would check that you are not using two doem covers...vercommon mistake, if you put your PTZ in an outdoor housing you must remove the inner dome or it will have trouble focussing

turn off SRT and change to Geo Mpeg4, make sure all the fast moving cameras ...roads etc are seperated on your group of four inputs.. IE put all the traffic views on inputs 1, 5, 9, 13 etc

The only TRUE POS integration I have seen is in the March Networks, it works different to all others because it works through software not a ****y 232 printer interface, if u use the 232 capture box you can only search what is on the printed docket, and half that time that is not all you want o search...the march networks POS Investigator suite is software based and allows you to search for more than what is on the docket, PLU codes, operater sign ons, multiple operators lots more, the best I have seen by a mile

I like using the Bilinx software, then you have no need for a controller, but it is not as easy as the full joystick keyboard. Best I have seen is the Logitech Thrustmaster flight simulator joystick, reprogrammed for PTZ control

agreed

Change your resolution to 640x480sw and then change your recordings to MPEG4, see if that makes a difference. The only thing I can see wrong si that u are strecthing 320x240 to larger than it's native image size and it may be on low quality, make sure you set the webserver to transmit in 640x480 as well and if unsure check the RPB client as it will network in the actual recorded image size, a lot of remote clients will only recieve 320x240. The other issue you have is that it appears you are possibly using wavelet compression or JPEG, the problem ther is the tiles on the floor do not change and have little contour, this means they will be the most compressed part of the image, try moving around infrnt of it and see if the picture gets sharper where you move. Wavelet will look for uncontoured similar images and will compress these areas more heavily...honestly though I am pretty sure changing your video source to 640x480sw will help

A site like this is usually specified by a consultant, be evry carefull or you may install something not up to scope and they can make you pul it all out, stay away from DVR as the front end for this, 30 PTZ's means you will probably have more than one operator and usually from many different locations. I would use a matrix with satelite controllers as the front end for this job, you could use the Bosch Divar DVR linked with the Matrix offerings, this way you have controllers at the recording site and controllers off site, no need for PC's and you can link all into the one system. They will want to see analogue displays so i would suggest you by a good matrix with support for at least 5 or six satelite controls, call your local manufactorer and have them sign a NDA agreement and pay them to consult. i ahve doen several stadiums in my time and analogue matrix at the front end is always the way to go..you will probably have several places like the police booth that will want control so this is the best way to do it by far, PM me if you need help as i have designed many of these

A site like this is usually specified by a consultant, be evry carefull or you may install something not up to scope and they can make you pul it all out, stay away from DVR as the front end for this, 30 PTZ's means you will probably have more than one operator and usually from many different locations. I would use a matrix with satelite controllers as the front end for this job, you could use the Bosch Divar DVR linked with the Matrix offerings, this way you have controllers at the recording site and controllers off site, no need for PC's and you can link all into the one system. They will want to see analogue displays so i would suggest you by a good matrix with support for at least 5 or six satelite controls, call your local manufactorer and have them sign a NDA agreement and pay them to consult. i ahve doen several stadiums in my time and analogue matrix at the front end is always the way to go..you will probably have several places like the police booth that will want control so this is the best way to do it by far, PM me if you need help as i have designed many of these

PTZ is a good idea, you can even get small ones now that will be cheaper but if you customer allows it, buy a standard dome and mount it close to the device on a pendant style drop mount, sure it willlook ugly but you will get the result, another option although I hate to suggest it is the Samsung zoom cam, it is full body and comes with a 485 control unit, you could have it backed out in normal mode to see the panel and more without detail and then use the hand controller at the end of the run to control it and zoom in to get the identification that you want.

There are several on the market, very few have been rated for true shock standards, the best i have seen has 3.5 and shock proof, runs on 12v and is purpose built, it ven has GPS http://www.marchnetworks.com

If you only want it to move left to right ..thena pt control head is all you need, buy one second hand for under that price, but in reality, you money would be better spent buying a full PTZ cam

make sure you are using the correct baud rate, and make sure you are not wiring in star configuration, have you terminated the end of line and are you splitting the 485 signal anywhere. Adjust the PTZ speed and baud rate first

I would try to estimate how long you want to keep the system, if for only a short time...3yrs perhaps, then hardware compression will be advantagous This is a good point, but the PCI bus is needed only if using software compression...now do not flame me..I know that is not exact, but with hardware compression you already have the BUS needed if you go standalone It depends how th software is written if it can use the technology or not. Sata are also good for cooling and airflow, it is pretty much standard these days anyhow. 5) A solution that does analogue and IP together, for best flexibility. Eg: A business with a main location (several analogue cams) and smaller ones (maybe one/two IP cams). I agree, this is the best idea

Do you have ethernet points where the cameras will go, this may eliminate your need to go wirelss, as you could use a webserver or IP camera

I agree, firstly rule out the cable and interference, use a fly lead on aservice monitor to find out, the actual direction of the energy flow on the screen is important to determining what the fualt is, to me it looks more like interference and I have seen this a lot on telco type cables

I agree that you should stick to fixed cameras and should also consider the factor that scene reflectance will be low (due to asphalt) so you will need very low light cameras, sodium vapur are possibly the worst lights you can try to utilize so get good cameras that can compensate, as for motion tracking...if you can trigger the door, you will havea good chance, the reason is the camera will zoom in at the target, once zoomed in it will try to follow and do it REASONABLY, but once something else is in that view it becomes hard for it to follow, you can actually buy PTZ"s that come with a remote unit that attaches to a belt, this will work perfectly as it will lock onto the signal, but you would have to have them drive the car back to the point they left from to drop it off for the next person. You may wish to consider a programmed tour, you can make a walkway and set the door to trigger the tour, at the right speed and if the patron does not stop you can do this succesfully, but I would be carefull what you promise. I would still consider the PTZ option with Motion tracking because even if it is not entitrely accurate it is still going to be much more accurate than a wide angled overview camera and you may get lucky, but be carefull what you pormise.

You are not understanding me...I think.... I agree you can get the 200 cams to one point on UTP, but how do the 20 or so users (on remote software) view them, they would not all be in the one location, so to get the video from the DVr to them you would do it on the network, therefore all the video streams from one place...even the recordings for review, this would be too much of a bottle kneck. Getting to the recording part is easy, but watching it from other locations on site can only be done by ethernet?

rory UTP will not require bandwidth, that is correct, but how do all the people see the cameras they want, that must be done on Ethernet, unless watched from a central point, therefore the Bandwidth will still be used, in big jobs it is uncommon that one point be the ONLY place to view the cameras, and it is normal that several points will only wan to view certain cameras, so there would still be traffic for the remote clients, plus reviewing would be an issue, for example....if 10 different users all wanted to review data from that one point you havea bottle kneck especially if you have 10 more trying to look live remotely at the cameras, so in order to avoid this you can use switches to route the traffic.

Not exactly, most IP recording systems allow for Unlimited camera packages for much less, I was not awre you could Use UTP as a switch type environment, regardless, it is not as powerfull as a switch, because a switch is more programmable, especially with network traffic, if you go to one point with more than a certain number of cameras you will run into memory and bandwidth issues, you can only have a certain amount of data stream heading in both directions at the same time from one point...having it all go to one point will create congestion on your netwrok wehn people want to use network remote viewing...for example....if you have three points A,B,C then B and C may want to view 32 cams each and review 16 each at the same time, let me tell you that without a managed network you can run into issues, a switch can route the camera traffic to those that need it and you can plan so that traffic does not clash, this allows for a smoother network. Also with UTP you are bound by where the cable terminates???? With the network option you can relocate the NVR to any location and reprogram the switch, it is also easier to trouble shoot. I could be wrong but relocation is a major concern for these kind of jobs. Also protocols do not go well wit UTP transmition between anything other than Ethernet.

I am confused...I mentioned that for 200 cameras you need to run only one cable in a ring to make a network, then you can put your cameras in small groups and put swithces at each group, this not only makes for redundancy but allows correct traffic flow. I am not sure how you were saying you can already do that, I am aware you can use UTP per camera, but how do you avaid running 200 cables or is there one cable that has 200 pairs in it that can work in the same mannor?

can you really run 200 cameras in one cable 400 cables in one without affecting anything