Russian version

Calculalations for Security Systems

• Calculating the focal lenght of a lens (by field of view)
• Calculating the focal lenght of a lens (by angle of view)
• Calculating horizontal and vertical angles of view by diagonal angle of view
• Time lapse update times
• Duration of the recording on DVR
• Dead time of video switcher
• Wire selection

Copyright © 2005 "Security-Bridge"