Soundy

Well, we inherited a bunch of GV sites, and I've run into one issue with a GV800 card that I think points to poor design: I had one camera (channel 11) that was noisy and intermittent because of a poor crimp connection, and every time it would drop out, one of the adjacent cameras (channel 15) would drop out as well. If the machine rebooted with that camera down, the other two channels on the same "column" (channels 3 and 7) would take an extra 30-60 seconds to come up as well. This is something I've never seen with the ComArt cards used by Vigil and VideoInsight, and IMHO, a problem on one channel SHOULD NOT be adversely affecting THREE other channels.

Hmmm... without actually taking one of these apart, I'd say it's a pretty good bet that the cameras actually DO use baluns... they're simply built-in. Some Pelco cameras (among others) do this as well (IS-series in particular), but leave a twisted-pair tail for the video rather than limiting you to RJ45 termination. The remote access is nothing special - RS242/422/485 and Pelco D or P protocol to the OSD; a number of other cameras have this feature. Ditto with including the power in the Cat-5 - it's probably just using the other two pairs of wire not used by the video and control, same as with the appropriate balun. I would suspect the only thing "special" about this design is that they probably use a different pinout than other RJ45 baluns, so you have to use their special "adapters" at the other end (probably at a premium price).

Actually, THIS version of phpBB should support "status levels" inherently. The most basic way of doing it assigns different user designations based on number of posts - 0-20 posts is a "noob", 20-100 is a "wannabe", 100-300 is an "expert", 300+ is a "guru"... something like that. Mods/admins can also create and assign custom types to specific users. I'm not sure about this version, but version 3 does have a LOT more control over permissions, where certain users could be given limited mod powers to approve, delete, or edit posts, or different permissions specific to different forums, and so on. I know this version does allow the admin to assign specific people as mods in different forums...

"Enough"?? You can't GET more than 120 combined fps out of a four-channel system. NTSC = 30fps; 30x4 = 120. /facepalm

That's a good point... would be too great a risk of "abuse" there, especially with the "high-tech" cars. I don't think the CASCAR team I worked with even HAD a laptop, not that it would have done them much good, since there were pretty much NO electronics outside the MSD ignition systems in those cars Now THAT is some cool $#!t right there!

Hey Erron, do you know what camera that is capturing that clip? Looks like a 3MP?

Is this it? http://aopvision.en.alibaba.com/sellofferdetail/52296556/Sell_16ch_120fps_DVR_Card_AOP_V8004.html

The problem here is, these cables are not "standard". There is no pre-defined pinout that everyone uses, and so a certain cable won't always work with a certain card. Case in point: GeoVision, Vigil and VideoInsight (to name three that I've worked with) all use these type of breakout cables. However, the Vigil and VI cards use different pinouts than the GV. For example, I connected a Vigil breakout cable to a GV DVR and found that while all the cameras worked *individually*, they weren't in the same sequence (connecting a camera to the input labeled '8', it came up on channel 3 in the DVR). Worse, when I plugged a Vigil DVR in place of a GV system with a full 16 cameras, keeping the GV breakout cables, while all the channels came up, all of them were scrambled and/or noisy, indicating that a different ground configuration is also used. I haven't taken the time yet to tone out the GV cables and see what pins out where, although I do have the Vigil/VI cable toned out... But in any case, the point is, you need the proper cable for the card you're using, or there's a good chance it won't work properly. BTW, if you're searching for such a cable, the proper designation for that VGA connector is "HD15" - High-density, D-sub, 15-pin.

I think you misunderstood my post. No, I was responding to DoorMan's. I agree with your post

Here is the test definition as provided on the AXIS website.... "Shutter speed not to exceed 200ms". This is based on Industry Standard CEA 639, "Consumer Camcorder or Video Camera Low Light Performance." http://www.axis.com/files/tech_notes/Axis_MMI.pdf So the simple question now becomes "Hey Mr Mfg do you test to CEA-639?" All these guys do: Samsung, JVC, Philips, Sony, Hitachi, Canon, Panasonic, and Thomson Consumer Electronics. That's not really the same thing though - all that spec states is that the shutter won't go any slower then 1/5s(!!). That's of no use when you're looking to find out what shutter speed is actually used at a given lux level.

Thing is, there's nothing really special about these, as baluns go. The most basic video balun connects the BNC pin and shield to a pair of terminals, lugs, screws, or pins on an RJ-45 jack, via an appropriate transformer. The ones that add power, simply connect the power input/output leads directly through to two pairs of pins (so you double-up the wires for better current capacity) on the RJ-45 jack. The ones with serial control do the same with the fourth pair of RJ-45 pins, and I would suspect the ones with audio do the same (although they COULD use another transformer for proper balanced audio, I doubt that's the case, at least with most cheap ones). Basically, there's no functional difference between using one of these all-in-one devices, and just plain video-only baluns and then tying your audio, serial, and/or power directly to the wire pairs in the Cat5 jacket... all these do is simplify the installation a bit.

keep in mind, the bulk of that is inside the ceiling - they mount easily into tile or solid drywall, and you don't need access to the back to secure them DF8 (8") in a 2'x2' ceiling tile

Are they going to a bigger sensor with this 10MP beast? If not, I wouldn't expect much for this camera's low-light capability. Still, would be great for daylight!

Do these need to be weather-sealed domes for outdoor use, or are they for indoor? Indoor, you could possibly use something like the Pelco DF5 or DF8 line of enclosures, and populate them with whatever box cameras suit your needs - no need to even match brands, let alone models. The DF5 series are a 5"-diameter dome... DF8 are an 8" diameter for larger cameras. They're cosmetically identical, so you could even mix and match those if necessary.

We've use FLIR thermal cameras on a site, they work great. They have a "Wide-Eye" model that will give a full 180-degree view, plus various dome models. www.flir.com

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Yeah, you won't find any computer fans that will move enough air to properly ventilate an entire room, let alone an entire floor of the house. You could also consider any standard sort of bathroom fan, or if your windows open, check out a window-mounted fan.

Alright, here's inferno's pic of the software in question... doesn't ring any bells for me, but maybe for someone else?

Some jurisdictions do require installers be licensed for low-voltage, most require licensing for alarm installers, some lump CCTV installers in with that, and some do have specific licensing for CCTV as well... but that's not the same thing as "certification" (which IMHO is barely worth the paper it's printed on in most technology-based industries). Which is why I ask, are you sure you need it in your area?

Where are you located? Are you sure licensing and/or certification is needed, or even available?

This REALLY sounds like a ground-loop problem.

Shouldn't cost €20 for that... a single 12DVC/1A "wall wart" transformer will suffice, we get them for about CDN$10.

The system won't let you post pictures or links for the first few days or several posts. Kind of a pain in situations like this, but it's done as an anti-spam measure. If you have the pictures on a website somewhere, you can PM me the link...

Actually, it might help to test voltage at the camera end... WITH the IR LEDs on, to see if the voltage drops substantially.

If the only output is VGA, you'll need VGA monitors at the multiple locations, and either long VGA cables, or Cat5 cable with VGA baluns to get the signal there. OR, you could use something like an AverKey to take the VGA signal and spit out composite video, which you can then run over the coax to regular TVs. OR, you could run the cameras first into a quad, switcher or multiplexor; the cameras would then daisy-chain from that to the DVR, and that device would then drive the remote monitors.