Research labs@Digitals India
You are ready to implement a CCTV system at your premises. You have finalized the basic camera numbers, tentative placements, purpose for the proposed CCTV solution. You have even asked for price quotes from leading CCTV integrators and solution providers. But you are confused about specifications, makes and various model numbers in an even varying combination s. Sound familiar? You are definitely not alone, several of our customer face the same kind of problem as there is a wide range of products available for CCTV system in India.
While comparing, the specification might look the similar and you are enable to understand the price variations due to lack of standardization. It is Not necessary that the lowest quotation is offering you the best value for money.
There are some rules you should follow to analyze different quotation and arriving at best combination for your applications.
Rule 1# Understand the Camera Specification and configuration.
Today the most advance technology is infused into the CCTV camera. First specification is the CCD configuration. CCD is the image capturing device in the camera. Generally, A 1/3" Sony CCD is considered good quality, but 1/3" Sony HAD CCD gives you a better picture. Please note that having a Sony CCD does not make it a SONY make camera. Next is the resolution of the cameras. You can find High Resolution Analog cameras with upto 700TVL resolution. TVL is actually a description of Horizontal resolution of the camera. More the TVL, Better the output from the camera. You can go for 600TVL, 540 TVL cameras which gives more clearer picture, and the cost is higher from any lower resolution camera. The standard and the base line resolution should be at least 480 TVL. You will need a Dome type camera for all indoor locations, IR dome or Bullet cameras for night vision and C mount camera for outside locations. Our DISVU kits offer you the right combination of cameras for various application. You can order these kits online at Shop Online.
Rule 2# Choosing the Right Digital recorders for CCTV application.
Here is Self- explanatory Chart we have Developed to distinguish a good DVR with a Normal DVR. DISVU DVRs are designed to match all the specification of a good quality DVR mentioned below.
|DISVU DVR||Normal DVR|
|Operating System||Linux (Virus Free)||Windows or other|
|User interface||User friendly||Typical|
|Video loop Output||As well as Video input||Not Available|
|Audio input||Equal to Video input||Less than Video input|
|Video Output||TV output, VGA out put,HDMI output||Only TV & VGA|
|Recording Format (Resolution )||D1 ,4CIF or 704 X576||CIF or 352 X 288|
|Recording Speed||25 FPS||Time Laps|
|System Resource capability||Pentaplex- Live, Recording, Backup, Playback & Remote access||Triplex|
|Data Storage||8 HDD & eSATA support||2 or 4 hdd support|
|HDD management||Available||Not Available|
|Raid /Mirror Function||Available||Not Available|
|Backup||CD/DVD built in, USB, through Network||Only USB, No CD/DVD or Only CD/DVD, No USB|
|Clint Software||Built in Web browser, CMS software||No Built in Web browser only CMS software|
|Player Software||With Backup file on media||Additional software required to play backup file|
|Network||TCP/IP UDP,DNS,DDNS, FTP||FTP & DDNS Not available|
|Recording Mode||Motion, Alarm, Scheduled and Continuous||Only continuous|
|Privacy Zone Masking||Available||Not Available|
|Alarm through Motion, video lose, Camera Masking||Available||Not Available|
|Alarm input and Output||Available||Not Available|
Rule# 3: Understanding the Storage requirements of the system-
Maximum External storage available is 2 TB( 1 TB= 1024 GB). Here is a useful conversion table.
There are DVRs which have slots for more that one external drive. Maximum number of HDD slots that are available is upto 7 HDD. This can expand the storage upto 14TB of Data like this DVR here. The Amount of storage required is directly proportional to - The number of cameras and the number of days for which the recording is required. Storage calculation for CCTV is such a Vast subject that We are planning to feature an article dedicated on calculating storage requirement. You can follow our blog to keep yourself updated with Security and surveillance technology at www.securityfaqs.blogspot.com