Eli the Computer Guy

Info

• Level: Beginner
• Presenter: Eli the Computer Guy
• Date Created: February 24, 2012
• Length of Class: 70 Minutes

Tracks

• Digital Surveillance

Prerequisites

• Introduction to Digital Surveillance Systems

Purpose of Class

• This class demonstrates the abilities of Digital Surveillance Cameras and explains the differences between types of cameras.

Chapters

1. Introduction (00:00)
2. Analog vs. IP Cameras (03:24)
3. Analog Cameras Configuration (08:31)
4. Camera Form Factor (22:17)
5. Camera Feature (35:14)
6. Purchasing Cameras (49:04)
7. Final Thoughts (57:49)

Class Notes

1. Analog vs. IP Cameras
1. NVR – Network Video Recorders are used for IP Cameras, DVR - Digital Video Recorders are used for analog cameras.
2. Resolution for Analog Cameras is TVL – Television Lines, for IP Cameras resolution is based on pixels.
2. Analog Cameras Configuration
1. Analog cameras use RG59 (Siamese) Cable for connecting to the DVR.  Siamese cable is a coax cable and a 12 volt power cable contained within a single sheath.
2. Analog cameras use BNC connectors (British Naval Connectors) You can use adapters for cameras to connect to RCA or standard coax cable connection on TV’s.
3. Make sure to use the right power adapter for the camera.
4. BalUns allow you to use Cat5 Cable for analog camera wiring.  This is NOT an Ethernet, or a  TCP/IP connection.  It simply uses Cat5 cable to transmit an analog signal.
3. Camera Form Factor
1. Bullet
2. Dome
3. Box – Box cameras require you to buy the lens and mount additionally.
4. Vandal Proof Dome
5. PTZ – Pant/ Tilt/ Zoom are robotic cameras
4. Camera Feature
1. Low Lux Cameras allow cameras to see in low light levels.  32,000 Lux is sunlight at Noon, 1 Lux is a Full Moon Overhead at Tropical Latitudes, .002 Lux is a Moonless Night with Airglow.
2. No Light cameras use Infrared Lights to be able to see in a 0 light environment.
3. Auto Iris Lenses automatically close or open the lens iris to restrict the amount of light that hits the camera sensor so that the camera is not overloaded with light that is too bright.
4. Wide Dynamic Range cameras can see in a larger number of lighting conditions
5. Purchasing Cameras
1. Make sure to buy good cameras

Resources

• Lux
• SuperCircuits.com

Eli the Computer Guy (437 Posts)

Eli the Computer Guy has 16 years experience in technology being the guy to fix "it". From the Army, to building out new satellite offices for the enterprise, to running his own shop with 9 full time employees Eli has real world experience with almost all systems that technicians will be working with. Eli has 1600 hours of formal technical beyond his Bachelors Degree in Criminal Justice on technologies ranging from Avaya PBX/ Audix to Microsoft, Red Hat Linux, MySQL, Cisco and much more.