Page 135 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 153: Dismantle DVR and Demonstrate major

functional blocks and test for the

healthiness

Objectives

At the end of this exercise you shall be able to
• on-board software, such as video analytics
• image protection /authentication techniques
• ports for additional recording capabilities
• internal hard drive for video storage
• ability to easily search for and locate event
• ability to record one or more camera Inputs while performing video analytics.
• removable hard drive for archiving purposes
• ability to transfer data to expendable storage systems called redundant Array of Independent Disks (RAID) to
Free up recording space. DVR installation.

Requirements

Tools/ Materials
• DVR/ NVR
• Screw driver set
• Wire stripper

Procedure

1 Analog CCTV
A CCTV system may send Digital or analog video to the recording system. A DVR receiving analog video
takes two fields of the analog signal and builds one image, which is then digitized and compressed. If the
video going to the DVR is digital, it is normally compressed to save storage space. Various data compression
methods can be used that offer verifying degrees of performance, quality, and capabilities such as:-
2 Digital CCTV / IP system
Some basic Component of different CCTV system are belo:-

• Security Camera: Security Cameras captures the video of the source. It is an essential of any CCTV
system. Every camera has three basic elements:
a faulty DVR unit

1 Prepare Your Tools and Equipment. ...
2 Power Off and Unplug. ...
3 Open the DVR Case. ...
4 Locate the Hard Drive. ..
5 Disconnect the Cables. ..
6 Remove the Faulty Hard Drive. ...

7 Install the New Hard Drive. ...
8 Reconnect Cables.

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