How Things Work

Our parent company has designed and installed CCTV systems for 20 years. The information below was compiled by our technical and installation staff. We hope this section helps you select the correct products to suit your needs and answer your installation questions. If you have any suggestions for additional "how to" topics email us at

Networking Resources

Learn what you need to know about putting video on a network.

System Diagrams

See how the pieces fit together.

CMOS vs. CCD Technology

Learn the differences in sensor technology.

Typical Illumination Measurements

A table of the available light in everyday scenes.

What Voltage Camera Do I Need ?

120VAC, 24VAC or 12VDC

Power Supply Considerations

Field of View Samples

See actual lens views at a specific distance.

Digital RF Modulator Diagram

Put the camera video on any available TV or cable channel.

Connector Attachment

Power Problems FAQ

Learn how power problems can damage equipment.

Solving Ground Loop Problems

Splitting/Amplifying the Video Signal

Video Tape Usage in Time Lapse Recorders

Purchasing and recycling video tapes

World Video Standards by Country

Cable Specification Guide

Frequently Asked Questions about Infrared Illuminators

Enclosure Rating IP Chart

Security Design Services is a Woman-Owned Small Business Enterprise

Packaged security camera systems | Security Cameras | Pan Tilt Security Cameras | Video transmission | Security Camera Lenses | Monitors | Housings & mounts | Installation Necessities | Security Camera Power supplies | Power protection | Video Signal | Digital Video Recorders | Video Over Network

Contact Our Sales Dept.

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