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But CAS | 16G surveillance cameras-one storage device | Monitoring professional accessories | high-speed authentic licensed
Actual capacity of 16G is how much?
For more details, you can look at Baidu know the description:
32G memory card CIF mode (352 * 288 resolution) Save 5-6 days recording high-definition VGA mode (640 x 480 resolution) can be stored for about 80 hours.
16G memory card CIF mode (352 * 288 resolution) Save 3-4 days recording high-definition VGA mode (640 x 480 resolution) can be stored for about 40 hours.
8G memory card CIF mode (352 * 288 resolution) Save 1-2 days recording high-definition VGA mode (640 x 480 resolution) can be stored for about 20 hours.
The above figures are averages, the specific storage time is also subject to the actual environment, motion picture and sound recording will affect the storage time. 30 minutes device automatically generates a video, the video will automatically store one by one full cycle of coverage, it has been stored in recent video.
Description: camera than a typical mobile device, it requires a 24-small memory card for storage of work if
Once the memory card is faulty, it will cause the device to stop crashes recorded fault! That is to say, maybe your card in mobile phones and other general equipment manipulation
With no problem, but it does not mean you can be perfectly compatible with the camera. The above description please known! Thank you!
After purchasing a memory card, careful people will find them in the operating system capacity and official nominal capacity of the memory card does not match, must be less than the nominal capacity, the greater the capacity the greater the difference in this.
Nominal 512MB memory card is displayed in the operating system is only about 490MB;
1GB memory card is only 980MB or so;
The 4GB memory card only about 3.7GB.
This is not the manufacturer or distributor shoddy deceive consumers, but manufacturers of memory card capacity calculation methods and calculation methods for different operating systems and unit conversion caused different relationships.
Hard drives and other storage type devices we usually use are drawn to this method of calculation capacity, the greater the capacity the greater the deviation, such as 40GB hard drive is only 37GB or so, this is normal capacity.
It is well known in the computer is binary, resulting in the operating system so that the calculation is based on the capacity of each 1024 is a binary, each 1024 bytes 1KB, 1024KB as per 1MB, 1024MB each for the 1GB;
The memory card is based on each vendor as a hexadecimal 1000 in terms of computing capacity, 1000 bytes per 1KB, 1000KB as per 1MB, 1000MB each for the 1GB, differences between the two caused a hex on memory card capacity 'shrink '.
With 4GB memory card, for example:
Manufacturers capacity calculation method: 4GB = 4,000MB = 4,000,000KB = 4,000,000,000 bytes
Calculated in terms of the operating system: 4,000,000,000 bytes / 1024 = 3,906,250KB / 1024 = 3,814.697265625MB = 3.8GB
At the same time in the operating system, memory card formatted, so that the system will take up some space on the memory card, provided to the system files, so the operating system displays memory card capacity and nominal capacity will be different.