【FOCUS VISION】Knowledge Class: Comprehensive Overview of Monitoring Practice

As the holiday season approaches, we extend our warmest wishes for a joyful Christmas to everyone. We are excited to introduce our upcoming welfare class, designed to enhance your understanding of FOCUS VISION and our offerings in the security monitoring sector. We believe that after participating in this session, you will gain valuable insights and clarity on our products and services.

Knowledge Class

How to calculate storage space for network stations?

Number of cameras * image bit rate * storage time / 8

How to change the address code of the ball camera?

Generally, the address code of a network ball camera does not need to be changed.

There are two ways to change the address code of an analog ball camera:

1. Hard switch change. There is a corresponding dip switch on the movement of the ball camera, which is generally binary. Turn the switch to adjust to the required address;

2. Software modification. Through the preset position, call out the ball camera menu, which has an address code modification option. Enter the modification.

How to calculate the power of centralized DC power supply?

Most cameras are powered by DC12V1A. For cameras with infrared fill lights, a certain amount of current redundancy is required. Choose a DC12V2A power supply to prevent insufficient power supply to the camera when switching to infrared mode.

Why does the network camera keep disconnecting?

1. Unstable power supply

2. Poor network contact, poor network cable head

How to set up the decoder on the wall?

Enter the decoder address through the computer browser and enter the decoder management interface for settings, or set it through the client software.

How to determine the millimeter of a lens?

Generally, the required distance of the scene is divided by 2 and then divided by 1000 to get the number of millimeters of the lens. Then, the number of millimeters should be adjusted appropriately according to the required shooting angle.

How to choose a disk array?

First calculate the storage capacity required for all front-end camera images, divide it by the capacity of a single hard disk to get the number of disks, then add the number of management disks and hot spare disks required for RAID to get the number of array disks.

How to set IP address of the video recorder?

Main menu - System Configuration - Network Configuration - Basic Configuration - Fill in IPV4 address, subnet mask, and gateway.

What is 485?

485 communication interface is a hardware description of a communication interface. It only needs two communication lines, that is, data can be transmitted between two or more devices. This data transmission connection is a half-duplex communication method. A device can only send or receive data. The 485 used for security monitoring generally refers to the PTZ control interface. After setting the protocol and rate between the control device and the controlled device, the control operation can be performed.

What is wide dynamic range?

Wide dynamic technology is a technology used to allow the camera to see the characteristics of the image under very strong fiber contrast. When a high-brightness area under strong light sources (sunlight, lamps or reflections, etc.) and relatively low-brightness areas such as shadows and backlights exist in the image at the same time, the image output by the camera will have bright areas that become white due to overexposure, and dark areas that become black due to underexposure, which seriously affects the image quality. The camera has limitations in its performance of the brightest area and the darkest area in the same scene. This limitation is commonly referred to as the "dynamic range".

Conclusion and Commitment

At FOCUS VISION, we pride ourselves on being a trusted security supplier. We invite you to explore our detailed product information and encourage you to engage with our professional team, who are readily available to address any inquiries you may have. We look forward to your participation and wish you a wonderful holiday season!