White Balance….What is that supposed to mean huh?

June 1, 2011 by · 2 Comments
Filed under: CCTV Glossary, Security Camera 

White balance means the camera is capable of removing unrealistic colors, so that objects which appear white in person are made white in your photo. Proper camera white balance takes into account the “color temperature” of a light source, which refers to the shades of white the picture has in it. Our eyes are very good at seeing white under different light sources, but security cameras sometimes have a hard time with understanding what shade of white the object in the picture actually is and can sometimes turn the white into: blue, orange, or green.

 

 

White Balance…Huh?

AI-Amp/AI or VS/DC – Security Camera Switches & Adjustments

October 30, 2009 by · 2 Comments
Filed under: Uncategorized 

AI-amp/AI is the setting used when using an auto-iris lens. If you use an auto iris lens, you have to set it to A1-amp. When using a manual lens, leave the setting at AI. VS/DC is a switch for selecting the control signal for auto iris lenses. Use DC for auto iris lenses controlled by DC (Direct Current) signals and VS for auto iris lenses controlled by video signals.

GeoVision Windows OS Issues & Troubleshooting

October 28, 2009 by · 6 Comments
Filed under: GeoVision, Security Camera, Software 

Over the past few years, I have experienced several common issues with Windows operating systems (OS) and the earlier Geovision DVR cards and software. The following are several of the more common problems and their possible resolutions.

Please keep in mind that every system is different and these fixes may not work for yours, depending on the software and hardware versions. If you have a specific issue that can’t be resolved by the suggestions below, don’t hesitate to comment. We’ll do our best to help out!

If you are experiencing issues with GeoVision’s Control Center V2 Software, you will probably want to take a look at our GeoVision Video Tutorials.

GeoVision DVR Conflics & Possible Resolutions

No/Poor/blurred image on a camera

  • On the box camera body, where the lens attaches to the camera body, make sure the big outer silver ring is removed. Only the small inner silver ring is required.
  • Make sure the DC switch in the back of the camera is set to DC or AI-AMP, depending on the camera model and manufacturer.
  • Make sure, if using an auto-iris lens, the 4 pin power cord is properly inserted in the 4 pin switch in the back of the camera.
  • If you still have no image, or black screen, or even ‘ Video Lost,” you may have a bad channel on the DVR card. Move the video cable to another channel to see if the issue is the camera or the card.
  • Try Refocusing the lens
  • Ensure the lens is tightened ONLY finger tight
  • Insure the correct version of octopus cable/dongle (the cable connected to the PC-DVR in the back of the PC) is attached to the DVR card
  • An external light source or object that may reflect light into an IR camera can cause the image to “wash out” insure that there is no light from streets or external building lamps. If placed near a wall or roof overhang have enough clearance not to get a reflection into the lenses of the camera.

Auto-login for Geovision not working

  • Auto-login in system configure may not be turned on
    • Stop Monitoring on Geovision system.
    • Click on Configure – General Settings (Only on newer versions) – System Configure
    • Go to Auto Log-on, put check mark in the box
    • Click on blue arrow to right of this line and enter Login and password.
    • Click OK – OK – Start All monitoring.
  • Password for system and autologin may not match
    • First, go to Local Password Setup
    • Check that the login and password are correct and entered
    • Click on System Configure
    • Click on Configure – General Settings (Only on newer versions) – System Configure
    • Go to Auto Log-on, put a check mark in the box
    • Click on blue arrow to right of this line and enter Login and password.
    • Click OK – OK – Start All monitoring.

Windows 2000 auto-login not working

  • The correct Registry entry may not be not there—
    • Click on Start – Run and type in: “regedit”
    • Navigate to : hkey_local_machine\Software\Microsoft\WindowsNT\CurrentVersion\Winlogin
    • Assign DefaultDomainName, DefaultUserName and DefaultPassword
  • If not there, create them:
    • Click Edit, Add Value, Value Name—DefaultPassword, Data Type–click Reg_SZ
    • Click OKString Editor Box, type your password, and click OK, save changes.
    • Click Edit menu, Add Value, Type AutoAdminLogin, Date Type—click Reg_SZ
    • Enter 1 in String Editor Box, save changes.
    • Click Edit menu, Add Value, Type ForceAutologon, Data Type—click Reg_SZ
    • Enter 1 in String Editor box, save changes

BLC or Backlight Compensation – Security Camera Switches & Adjustments

October 22, 2009 by · 4 Comments
Filed under: Uncategorized 

BLC:

BLC stands for backlight compensation. It is normally set to the Off position in standard lighting conditions. If you have a CCTV security camera in a shady area that points toward a brightly lit area, set this setting to On to help the camera compensate for the brightness and enhance the image.