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survtech

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Everything posted by survtech

  1. survtech

    How to keep outdoor camera connectors dry?

    There's also a product called Coax-Seal that is great for outdoor connections and splices. http://www.coaxseal.com/
  2. survtech

    PTZ Replacement compatibility issues

    I've been working with Pelco equipment for over 15 years and I've never heard of a DDTAC.
  3. survtech

    lens - DC and ESC

    Whoops, Wrong Planet!
  4. survtech

    Man that was stupid.

    Are you sure that you have power at the PTZ?
  5. survtech

    PTZ Replacement compatibility issues

    I see no reason to have two power cables unless the power is daisy-chained to another camera (not a good thing). Most likely one of the cables you think is for power is actually serial data. It could be either RS422/RS485 or RS232, but most likely the former. RS422/RS485 is not sensitive to cable type, except for very long runs (over 1000 ft.), so it could even be run on 18/2 power cable.
  6. survtech

    PTZ analog Camera Trouble

    Have you tried rebooting it (remove power for ~5 seconds)?
  7. survtech

    PTX RX transmission length?

    RS422/485 can travel up to 4000 feet on CATx twisted-pair. Farther than that, the signal could be run through a code distribution unit like the Pelco CM9760CDU-T or the Kalatel KTD-83 series to extend the range.
  8. Spectra domes require changing the firmware ROM.
  9. Many Spectra dome drives can interchange camera heads. Some would require a firmware change, though. Check with Time Lapse supply (http://www.timelapsesupply.com).
  10. survtech

    LUX Meter

    That what I use http://www.extech.com/instruments/product.asp?catid=10&prodid=55 Ditto. Great meter!
  11. survtech

    1500' Cat5 video loss

    1,500 feet is quite a stretch for passive-passive. My balun tests indicated a substantial amount of signal loss at that distance. I would suggest active at one end. Active Receivers: The advantage of active receivers is that they can be located at the recording/monitoring end of the chain, where there is usually easily-accessible power outlets and space for additional equipment. The disadvantage is that it is usually better from a noise standpoint to amplify a signal at its source. Active Transmitters: The advantage of active transmitters is that it amplifies the signal at the source; typically providing a better signal-to-noise ratio. The disadvantage is that the active transmitter has to be located at, or near, the camera; requiring space for the module and a source of power.
  12. survtech

    Maxim cabling distances

    RG59/U - 750-1000 feet, depending on who you listen to. 18/2 @ 1A (24VAC) - 150-180 feet 18/2 @ 1A (12VDC) - 70 feet I don't understand Question #4. Here is a link to a good calculator: http://www.nvt.com/content.php?func=distcalc
  13. survtech

    Pelco Spectra IV PTZ Control question

    The connections were checked and tested with the (+) and (-) both ways on the Rx on the back box. Both ways they are hooked up result in the same thing... when I try to control the camera through the KBD, the screen flickers a little like it's receiving some type of signal, but isn't responding to it. The camera's address and the protocol (Pelco P) are verified to match the PSM file on the System Manager. The port# on the camera's entry on the PSM file also matches the port# on the CDU to which the control wires are connected. You should not see any "flickering" in the video when using RS422/485 control. You might check your power, control and video connections at the back box. I've seen some issues with cables shorting when the flip-down door is closed. I've also seen problems when one leg of the 24VAC power line gets grounded (it should be floating reference to ground). The same applies to the control cable pair. Both wires should be "floating" with respect to ground.
  14. I care, I want the best possible image. People spent a lot of money, so they deserve the best possible image. Seriously, I defy anyone to demonstrate any difference in picture quality due to (minor) sync signal differences.
  15. What "adjustments" can you make to coax?
  16. survtech

    Pelco Spectra IV PTZ Control question

    Make certain your twisted-pair is connected correctly. Try reversing (+) and (-) control wires. Make sure you are connecting to Rx at the back box. Make certain you have set the correct address set on the camera.....
  17. survtech

    mini rg59

    We use it for short runs (<100 feet); mostly for jumpers and between our Server Room and our Monitor Room. No problems if used with good connectors (compression work best).
  18. Try inverting the video; which you should be able to do by twisting the camera part (where the lens attaches) 180 degrees. Then adjust the tilt all the way in the opposite direction. That will restore the picture to right side up and should allow the tilt to go fully (or nearly) horizontal.
  19. The spec sheet says that its tilt range is 0 to 146 degrees. Have you tilted it the wrong way? Perhaps you have to rotate the camera 180 degrees, then tilt it in the opposite direction? 146 degrees is pretty close to -30 degrees from the opposite direction. In other words, turn the camera and lens part clockwise or counter-clockwise so that everything appears upside down in the video picture, then adjust the tilt in the opposite direction from the way you have it.
  20. survtech

    fiber optic or RG6???

    A third option would be coax or single twisted-pair transport using either the Veracity HIGHWIRE product (http://www.veracityglobal.com/) or the Vigitron MaxiiCopper Ethernet Extenders (http://www.vigitron.com/categoryproductdetails.aspx?idcategory=12). Either one adds about $300 per channel to the cost of IP cameras and cable and can extend the distance for IP over copper to as far as 5,000 feet (1,680 meters).
  21. survtech

    I was in a bank, looking to rob it...

    Rory, The biggest problem with many cameras (including the WV-CP254H) is the lack of a defeatable AGC. According to Panasonic: AGC Level Selector AGC level can be selected with this selector. AGC automatically controls the gain of Image brightness level. HI: This setting raises more the gain and brightness of images under low light conditions. LOW: Normal position Low does not equal off. Even low AGC tends to muddy high contrast images (like playing cards) to the point that values and suits are unrecognizable. Otherwise, it would be an excellent choice, along with the Sanyo cubes: VCC5884E and VCC5884EA and the Ikegami cubes: ICD-505 Watec also makes some very small CS-mount CCTV cameras. The problem is that many of their cameras require odd voltages, like 6VDC, 9VDC, 12VDC or 15VDC. Watec 250D
  22. survtech

    I was in a bank, looking to rob it...

    The Pelco CCC1300H-2 and its successors, the CCC1370H-2, CCC1380H-6 and now the C10CH-6 are an excellent basic camera that were designed to fit, with lens, in Pelco's DF-5 back boxes. In actuality, the cameras are manufactured by Fujitsu (although Pelco won't admit it). http://www.fujitsu-general.com/global/products/camera/survei/index.html The CCC1300/1370/1380 are basically Fujitsu CG-321N / P. The CCC1390 was a Fujitsu CG-301N / P. The C10CH-6 is a CG-531N / P. The original CCC-series were very popular in casinos, although the DSP functions or chipset differences make the C10CH-6 less popular due to a "raggedness" in the picture that didn't appear on any of the CCC-series cameras. When questioned by our distributor, Fujitsu refused to provide any U.S. sources for the cameras; claiming we had to buy them from their importer but refusing to divulge who that importer is (Pelco, of course).
  23. Karl, Here is a link to the Pelco product site: http://www.pelco.com/global/en/products/camera-solutions/range-presentation.page?p_function_id=9504&p_family_id=10221&p_range_id=2868#. Go there, click on Downloads, then click on Manuals and you can access the Installation/Operation and Service manuals. The Installation/Operation manual contains the connection diagrams. - Carl
  24. survtech

    DVR System for a card table

    The biggest problem would be installing cameras in the rail. You would have to use very small board cameras and mount them to the rail or under the table with a clear glass viewing window. Try Marshall Electronics. They have a good selection of small cameras and lenses for them. http://www.mars-cam.com/IVS/Cameras/cameras.html#Board Otherwise, you can see the entire table with a megapixel camera located over the table. Of course, you wouldn't see the "down" cards until they are filpped over.
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