How to define resolution of a cctv system

[aanniill 0]

Hello,

 

I am buying a new CCTV system with the configuration below. And i must write a contract between supplier and our company. So i must define the resolution, sharpness, clearness ... etc. of the vison.

 

So what must i write to my contract. For example 580 TVL and 32 Bit from 40 m OR read 12punto times new roman writing from 35m clearly. so please help me what must i write.

 

Thanks.

 

 

SAMSUNG SVR-1645 DVR

SAMSUNG 16 Channel Triplex Real Time(400fps) DVR, MPEG4 JPEG Dual Codec ,Triplex,RTOS, Real Time (400fps), 2 SATA HDD, DVD-RW, TCP-IP, ARP

 

SAMSUNG SDC-425P

SAMSUNG 580 TVL DAY-NIGHT CAMERA.1/3" Sony Super Had CCD. Dijital Day-Night. (2x-10x) dijital zoom, BLC, AGC, HLC, ATW, AWC, Multi Language OSD ,12 VDC

 

TAV2712DC Lens

SPACECOM Aspherical Day&Night Multi VariFocal 2,7-12 mm DC Iris Lens

 

PELCO ES31CBW35

PELCO ES31CBW35-5N-X Esprit® IOP 35X PTZ Camera, PAL

 

SAMSUNG SPD-2700

SAMSUNG 1/4" SUPER HAD COLOR CCD, DAY&NIGHT SPEED DOME CAMERA, 27X OPTIC (f3,5mm 94,5mm) ve 12X digital zoom, 550TVL (Color), 680TVL (B/W), ICR, BLC,AWB,AGC, AES, OSD, HLC, RS-422/485, 24VAC

[Guest]

Hello,

 

I am buying a new CCTV system with the configuration below. And i must write a contract between supplier and our company. So i must define the resolution, sharpness, clearness ... etc. of the vison.

 

So what must i write to my contract. For example 580 TVL and 32 Bit from 40 m OR read 12punto times new roman writing from 35m clearly. so please help me what must i write.

 

Thanks.

 

As you are not a technical specialist in CCTV you should define your operational requirement and state in your document that the responsibility for the system specification and design should be with the Contractor and should meet or exceed this requirement.

 

A good document is http://scienceandresearch.homeoffice.gov.uk/hosdb/publications/cctv-publications/28_09_CCTV_OR_Manual0425.html?view=Standard&pubID=635835

 

So if you wish the system to see a number plate at 40m in all weather conditions, make this a condition of contract and only accept the system when this is demonstrated to you.

 

Confirm the period for retention of recording, and how to extract evidence.

 

Make sure that the system design meets all guidelines and regulations that may apply in your country.

 

Make sure training and system documentation is included in the contract.

 

Define the warrantee period (should be three years I would say) and ask them what the maintenance costs would be over that period.

 

Check that the warrantee includes hard disks as these have a life of three years before they fail plus that the manufacturer will support larger disks as the original ones may be discontinued.

 

Hope this helps

 

Ilkie

[aanniill 0]

thank you so much )

[scorpion 0]

Hey ilk!

 

Great link!