Installation operation knowledge:
(1) Hard disk video recorder is slow to format hard disk. What's the reason?

This should be a hard disk problem. You can try to replace the hard disk

(2) Why are cameras always offline?

The power supply is unstable, the network contact is poor, and the network cable head is not well done

(3) What is the reason for serious camera interference?

The camera code stream is large, and the switch bandwidth and NVR bandwidth are insufficient

(4) How to set up a decoder on the wall?

Enter the decoder address through the computer browser, enter the decoder management interface for setting, or set it through ivms4200 client software.

(5) How to connect camera alarm?

The installation of security monitoring project needs to support the alarm input. There is "alarm in" at the end of the camera

(6) How do I connect the camera audio?

The audio camera needs to be supported, and the tail line of the camera has the words "a in" or "audio in"

(7) How to calculate the power of DC centralized power supply?

Generally, the camera is powered by dc12v1a. For the infrared light compensating camera, it is necessary to make certain current redundancy and select dc12v2a power supply to prevent insufficient power supply when switching to infrared mode.

(8) How far can syv75-3 video cable transmit?

In theory, syv75-3 video cable can transmit 300 meters. In actual projects, few people do so. Use 75-3 within 100 meters

(9) How far can syv75-5 video cable transmit?

Theoretically, syv75-5 video cable can transmit 500 meters, but few people do so in practical projects. Use 75-5 within 200 meters

1. How to add a video recorder?
(1) Auto add, NVR auto scan, can display all online cameras, select "add all";

(2) Add manually, select the corresponding channel, click "Edit", enter camera related information and "OK"

2. How to modify the camera IP?
(1) Open the camera management interface in the computer browser, find the network options, and fill in the address to be modified;

(2) On the NVR, after searching the camera, click "Edit" and enter the modified address.

3. How to change the address code?
The address code generally does not need to be changed. There are two ways to change the address code of the simulator
(1) When the hard switch is changed, there is a corresponding dial switch when the ball machine moves, which is generally binary and toggle switch to adjust to the required address;

(2) When modifying the software, call the ball machine menu through the preset position. There is the option to modify the address code, and enter the modification.

4. How to determine the lens millimeter number?
Generally, the number of mm of the lens is obtained by dividing the required distance by 2 and then dividing by 1000, and then adjusting the number of MM appropriately according to the required shooting angle.