All Rack CAB276X6 27U 600mm Deep Floor Standing Data Cabinet
- CCTV Lens Guide
- Hard Drive Size Guide
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution and frame rate settings. Finally you can often make your storage space last a lot longer by enabling motion detected recording rather than continuous, especially if there are long periods of no activity.
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb we recommend a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
All-Rack Floor-standing data cabinets are high quality and cost effective 19” racks. All doors and panels are lockable and removable giving all round access.
The fully adjustable 19” mounting profiles are printed numerically with the “U” height, for ease of installation and future use. Cable entry is from directly underneath or on the roof in the form of removable blank panels.
Technical Specification
Description: Industry standard design 19” floor data cabinets
Material: Cold rolled steel construction for cabinet frame, toughened glass panel insert in steel framework for front door.
Finish: Smooth black RAL9005 powder coated paint finish.
Racks: Supplied with depth adjustable heavy-duty steel mounting profiles to take industry standard 19’’ patch panels and equipment.
Doors:
• Steel framed / toughened glass front door
• Steel rear door
• Steel side panels
• All lockable and removable
Locks:
• Lockable front door
• Lockable rear door
• Lock and slam locks on side panels
Ventilation: Through roof panel and via fan tray.
Options: Delivered assembled as standard. Flat-packed optional.
Accessories: Fan trays (roof / rack mount). Plinth kits. Shelves (fixed / telescopic). Heavy duty castors. Leveling feet. Baying kits. Earth bonding kits. Cable tray
Profile distances: The mounting profiles can be adjusted forwards and backwards to utilise almost the full depth of the cabinets.
