Friday, December 18, 2015

CCTV Camera Resultion


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Analog View

         CIF                                                       320 * 240
         4CIF/VGA                                             640*480
         D1                                                         720*480


          NTSC:                   700 TVL             => 976 * 494       ==>   480k pixel.

          PAL:                      700 TVL             => 976 * 582       ==>   570k pixel.

          TVL     Saying that how many effective pixel the camera can delivered.

          NTSC: Stand for "National Television Sytsem Committee"

          PAL:  Stand for "Phase Altering Line. "


Camera Resolution example - showing the difference between different TVL or TV Lines

         Mega Pixel view
         
          1MP/720P                                                 .................
          QVGA/960P                                             .................
          1.3MP                                                       .................
          2MP/1080P                                               .................

          2.3MP                                                       1920* 1080
          3MP                                                          1920*1200
          5MP                                                          2048*1536
          6MP                                                          .................
          8MP                                                          ...................



 Article by: MR.Kamal.D.Werahara -Certis Lanka Technology.

Thursday, October 29, 2015

WIRELESS   ALARM  SYSTEM

Now  you  can conveniently  and safely  live without having  a trace of  damage to your home.  with no demolitions ,drillings on  your walls.   Simply   have  a wireless alarm system  at your home or office which can cover a wide  area of communication
You do not  have  to  worry  about  telephone line disconnections by intruders or even for   power failures
Your   wireless   alarm is powered  by a robust, reliable long lasting battery to provide  a sure response   
Do  you need  to expand  or upgrade this system – probably for another area ?  Yes it is possible !
Do you  want  to  shift to another residence ?  No  problem . Take  it with You- it is portable and affordable too


The devices  installed at your home or office are linked to the  CENTRAL  ALARM  MONITORING  STATION ,which  alerts  24 hours a day to pick up any activated      distress signals  received  via radio frequency  


Our Products  - CCTV, Fire Alarm, Access Control, Video Door  Phone, Guard Tour, Electric Fencing Systems  and Many more security Products  and Services  

 Article by: MR.Sirinimal Ganewatte -Certis Lanka Technology.

PARKING MANAGEMENT SYSTEM APPLIED BY PHF-9210 SERIES LONG RANGE READER

INTRODUCTION
PFH-9210 series is a robust and reliable UHF and long range readers and which can be applied either indoor or outdoor installation. It is designed to read 423 MHZ UHF TAG PHF-320[3M]/PFH-620[6M] for up to 3 or 6 meters vehicle long range access application. Also PHF-9210 series equipped with IR sensors or vehicle loop sensors input for certain the car arriving position to ease the entry/exit application and recording.


SYSTEM CONFIGURATIONS

APPLICATIONS
*When a car passes a vehicle loop sensors[if no vehicle loop sensors are used, the entry or exit inputs should be shorted to ground) the controller will enable the PHF-9210 to receive signal from PHF-620 or 660 long range card to PC-6750/C2. If the PHF-620 OR 660 card is legal,PP6750/C2 will store the access records and open the barrier.
You could use PC [with PG access ELE soft] to connect  PC 6750/C2 by locate the access control database and then download all access records when access is complete.
*The distance between PC 6750/C2 and PHF 9210 could reach 150 meters (if 10 ohms characteristic resistance cable is applied.)


*For install the PFH 9210 on road side with lane wider than 6 meters.
1. The entrance and exit reader should be separately installed with distance over than 6 meters to void the frequency interference.

2. Install reader at the right side of vehicle lane, and place the tag at the right top windshield of the car.
*You could use the 2P relay to let only one PHF-9210 is enabled.(optional)
                                                   Article by:B.D.C Thrindu (IT Executive)-Certis Lanka Technology.