survtech
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Seeking Ideas to improve CCTVForum for 2009
survtech replied to larry's topic in Questions about this site
I like the way this forum is set up just fine. I don't see any need to limit viewing access to only registered users except for certain circumstances, like your "Dealers Only" area. There is already a forum like that (cctvhelp.com) and I don't think they have very many members. The only thing I could see that might be worth doing would be a limited access area for Casino Surveillance and, perhaps, casino-oriented dealers and integrators. I've long-lamented the lack of a forum where we can share information without having the general public see it. Perhaps you could run a poll to see if other specialists in that field would be interested in such an area? I would start one myself but I don't want to step on the Admins' toes. -
Of course, you DO have the option to use a different camera if the Arecont software gives you fits!
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How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Very interesting technology. Now, if they could only get IP latency down to <50ms, they might have my vote. -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Please give a link. -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
I agree. I have been pestering the Alliance since day one to include twisted-pair as a transmission medium. But then again, IP will not pass on a single twisted-pair cable either without a $600 Nitek VR124UTP. Point-to-point is not necessarily a drawback, especially from a signal transport reliability standpoint. You only lose one camera with a bad connection or whatever; not tens or hundreds! -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
I said I am keeping an open mind, not jumping in with both feet. I see some real possibilities for HDcctv, especially in casino deployments where the infrastructure for IP doesn't exist and would be prohibitively complex and expensive to install; where frame rate and latency are real issues and where we don't want lossy compression at the source. -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Or at least wait until IP manufacturers get their ducks in a row - fixing the issues with latency, I don't consider PTZ's to be a "niche". Perhaps not for your installs. You were the one who said Maybe, but they aren't - incompatibility exists. Doesn't describe camera standards. In large, mission critical installs, good = darned expensive, darned complicated and darned difficult to manage! -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Or at least wait until IP manufacturers get their ducks in a row - fixing the issues with latency, low frame rates, poor low light performance, incompatability between manufacturers, lack of standards and network QOS problems. -
No. The 100 meter limit on UTP is for networks, not analog video. For video, RG-59 coax is typically good for up to 750ft. Passive-passive UTP can work at up to 1000ft; passive-active or active/passive UTP can work at up to 2000ft. and active/active UTP can go up to 4000ft.
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The Pelcos are high-quality. But they (and any mechanical device) will eventually wear out parts when used continuously. You might be a little better off if you program a "tour" with appropriate pauses at areas of interest. That said, PTZ's are not best-used when continuously panning or touring. Their best application is when they can be controlled by an operator in conjunction with fixed cameras. The biggest problem with PTZ's is that they are often are not pointed in the direction where they need to be when an incident happens. Areas of high importance should be covered by fixed cameras, with PTZ's used to "zoom in" on an incident when the operator is notified. A PTZ that is continuously moving will tend to pass the trouble spot before the trouble can be analyzed or be pointing in the wrong direction at the time.
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How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
At a cost of approximately $200-$300 per cable assuming the existing transport medium is RG-xx 75 ohm coax. And that half-dozen cameras should be relatively low bit rate. Don't expect to run six MJPEG multi-megapixel cameras at even 15fps on a 100Mbps HIGHWIRE. If you are using analog twisted-pair transmission, be prepared to pay nearly $600 for the Nitek VR124UTP product or resigned to rewiring your whole job for networking. In either case, be prepared to learn networking and, for critical applications, VLAN Programming. -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
The point is, I have an open mind towards HDcctv. Some of the posters here apparently do not! -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Why? Would a 5MP camera be able to see the shoplifter in the next aisle? Or the customers playing at the third row of slot machines? Or have a wider field-of-view? Or see better in low light? -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
JOINDVR, You appear to misunderstand what the HDcctv Alliance is proposing. They are not talking about using IP as their delivery system. Link to HDcctv Alliance -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
That's a consumer pocket camcorder. How can you equate that to the price of a cctv camera? -
my multiplexer falls asleep.........tales from a by-gone era
survtech replied to shek's topic in General Analog CCTV Discussion
蹲下的老虎,暗藏的龙. 飞行匕首议院. -
my multiplexer falls asleep.........tales from a by-gone era
survtech replied to shek's topic in General Analog CCTV Discussion
抱歉,没有票,没有洗涤! -
How do you think of HDcctv? It can be a sustitute for IP?
survtech replied to hdcctv's topic in DVR Cards and Software - PC Based Systems
Not for casinos. -
896 x 32 Crosspoint Matrix Switcher. 8 Matrix Bays. 2 CPU's (no changeover switch). 1 Spare Matrix Bay Power Supply. No keyboards. All software and manuals. Located at a major SoCal casino. Replaced with a CM-9780 due to space limitations and the need to accomodate additional inputs and monitor outputs. System was working perfectly when removed from service. We can split it into multiple systems if you want less channels or monitors - 256 x 16, 496 x 32, etc. PM me with your email address and I will provide additional details.
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Yes, we still have the complete system. PM me your email address and I'll send more details.
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That's exactly what Dallmeier says about their virtual matrix! How do the operators get used to the nearly 9ft. difference between a vehicle's actual position and its observed position with 150ms latency when the vehicle is travelling at 40mph?
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Is that one of the cameras that comes out with 4 18-20 gauge wires? In that case, the bend radius would not be a problem.
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Soundy, I agree with you about compression connectors. They're practically bullet-proof. We use AIM 27-9103 3-piece standard connectors for plenum RG-59 indoors but have found that compression connectors are the only ones that work on mini-coax.
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Scorpion, One problem - you're exceeding the "bend radius" for RG-59U coax. From Belden: Product FAQ Bend Radius -------------------------------------------------------------------------------- The rule of thumb is to not exceed a bend radius of less than 10 times the diameter of the cable. Some cables are tolerant down to 4 times their diameter, but these are exceptions to the rule. Since RG-59U is about .25" in diameter, your service loops should be at least 5" (2x2.5") in diameter. For instance, the mechanical specs for Belden 1426A are: Mechanical Characteristics (Overall) Operating Temperature Range: -30°C To +75°C UL Temperature Rating: 60°C Non-UL Temperature Rating: 75°C Bulk Cable Weight: 33 lbs/1000 ft. Max. Recommended Pulling Tension: 68 lbs. Min. Bend Radius (Install)/Minor Axis: 2.500 in. From Wikipedia: Bend radius, which is measured to the inside curvature, is the minimum radius one can bend a pipe, tube, sheet, cable or hose to without kinking it, damaging it, or shortening its life. The smaller the bend radius, the greater is the material flexibility (as the radius of curvature decreases, the curvature increases). The diagram below illustrates a cable with a seven-centimeter bend radius.