【AEVISION】 Nine tips to buy a video monitor

The monitor kind on market is mixed up, how does consumer choose high-quality product at rest? Let me tell you nine tips for picking a monitor!

LCD panels are very important

In a security monitor, the LCD panel largely determines the brightness, contrast, sharpness and so on of the monitor. Therefore, its output, advantages and disadvantages and market environment and many other aspects will affect the quality of products. Therefore, when we choose the monitor, xiaobian suggests that you should choose a better known brand, so that both in the technology maturity, and the quality of its own mastery, have a more comprehensive understanding. For quality assurance is still very helpful.

Proportion selection of the monitor

Now, as with TVS, there are a variety of screen ratios for monitors. Common display sizes on the market today include 17 ", 19 ", 20 ", 32 ", 42 "and more screen areas. In the horizontal and vertical proportions of the screen, there are 16:9, 4:3, or 5:4 proportions. For some users, this may simply be a choice of size or monitoring habits. It's not. Like the monitor equipment, the front end surveillance camera also has a fixed length to width ratio when it is in operation. If the aspect ratio of the front and back ends is difficult to match, the image displayed will be distorted, or the danger of deformation, so as to bring a certain impact on the monitoring effect.

Currently, although there are a wide variety of aspect ratios for monitors, the 16:9 ratio is the one most current surveillance cameras accept. The 16:9 ratio has become the mainstream for surveillance cameras. When we choose equipment, the 16:9 ratio should be worth paying special attention to.

Examination of imaging performance

When we introduced how to buy surveillance cameras, we often advised consumers to make a decision based on the actual situation after making a practical comparison. The same is true for the monitor. It's easy to compare, but in practice and observation, what should you focus on?

The resolution of the

For the resolution selection, we also use the 16:9 screen ratio as an example. Currently, this widescreen design has a physical resolution of 1368 x 768. For this parameter, we can use the signal generator input clarity to test the signal, and then observe the number of relevant lines displayed, so as to see whether it meets the requirements of this level of quality. In addition, we can also set a high-speed moving object in the surveillance camera in front of the surveillance camera, so that we can see the reaction rate of the monitor, and whether there is a phenomenon of tail and so on.

The reaction time

Speaking of corresponding time, we can take a look at the current level of a corresponding time. At present, response time has become an important selling point for more and more monitor manufacturers. In camera engineering, if you want to achieve the best monitoring effect, it is difficult to achieve without 60 frames per second response speed. This rate can only be satisfied with the reaction speed of less than 16ms.

Don't worry, however, that the current mainstream monitors have response times of up to 8ms, allowing for 125 frames per second of processing. However, a 12ms or 16ms product is sufficient for users who do not have high demand. Especially for some conventional fixed point low speed ball cameras, 8MS is somewhat wasteful.

Brightness and contrast selection

When selecting a monitor, we often see a choice between brightness and contrast. And these two parameters are one and what kind of a reaction? Generally speaking, the higher the brightness of the LCD monitor, the brighter its color, and the better the actual display effect. And for those of low brightness products. It also displays darker images, which increases the user's sense of fatigue. At present, the brightness of an ordinary monitor is about 250CD /㎡, too bright and too dark will affect the image.

Stability of monitor

After all, contrast is the result of dividing the brightness of the white image by the brightness of the black image. Therefore, the bigger the gap between the two, the clearer the picture will be, and the stronger the real sense will be. In general, the contrast of the LCD monitor is about 3000:1. The contrast of the traditional CRT monitor is much lower than that of the LCD screen. However, for the monitor, 400:1 is almost close to the monitor's contrast offline. When the contrast is below 300:1, the monitor can be ignored.

Visual Angle observation

In fact, for visual perspective, this is a new reference direction in the monitor field. Because the light of the LCD monitor is shot through the LIQUID crystal at a nearly vertical Angle, the color of the screen will change greatly when you observe the screen at different angles. This problem is not encountered with traditional CRT monitors.

In observation, visible Angle can be divided into horizontal Angle and vertical Angle. When choosing a monitor, a larger monitoring Angle is undoubtedly the best choice. Although the current viewing Angle may be different across many brands, what is absolutely the same is the monitoring criteria.

Stability of monitor

In fact, when it comes to stability, I'm afraid everyone will feel that it should be the most important thing for everyone, but it is also one of the most helpless places. It would be an exaggeration to say that stability is "seen" out of thin air. However, from the surface, there are several small place can be more or less help lengthen the service life of our equipment, for example, the article mentioned the bad points of the monitor in the beginning, or whether to have the anti-jamming function of shell, good heat dissipation effect, as well as the advanced cooling fan and temperature control mode, etc. In addition, the screen application technology can also be an object of understanding.

AEVISION professional security monitor, in the above nine aspects of performance are very excellent. Launched a number of high quality products, covering LCD display, security, splicing and other fields, you can rest assured to choose.