Today we will look at the monitor KDL-40WD655 from Sony from the year 2016. Within this article, we will first take a closer look at the most important feature of a monitor -the display-, then the design, and in the next section we will go into the features of the monitor. Of course, power consumption, certifications, connectivity and other important details will also be considered.
Display
Let's start with the size of the display. It is 40 inches ( 1.016 m on the diagonal) large and should thus offer enough space for all contents according to Sony. For books or documents, a portrait format layout is usually used because the reading flow decreases as the width of the text increases. For small diagonals, screens in 4:3 format have a clear advantage because they are better suited for display due to their height. In contrast, widescreen monitors are better suited for playing video games or displaying several documents side by side, for example. Depending on the application, it should be decided individually whether the aspect ratio of 1.778 : 116 is sufficient. Besides the aspect ratios and the specified screen diagonal, the ratio between the monitor surface and the actual display is probably also relevant for some enthusiasts. This is the general ratio of non-display to display. In other words, 86.9 % of the monitor's front area consists of the display. The remaining percent consists of screen edges and cannot display an image. If you want to place several monitors next to each other, you should make sure that the edges are as small as possible. The display is a VA panel. The panel has a resolution of 1920 x 1080 px. The pixel density is 55 ppi. The pixel pitch is 0.461 mm. The continuous possible brightness specified by the manufacturer Sony is 350 nt. The panel is illuminated by Direct LED. The built-in panel ensures stable color reproduction of the image, even at deviating viewing angles, by means of its 178 ° (horizontal) viewing angle. Sony promises stable color reproduction moreover within a 178 ° vertical angle. Vertically, however, the image renews at a minimum rate of 50 hz up to 60 hz.
Color space
The panel has a bit depth of 8 per color channel, but what does that mean? The number of bits determines how many colors can be encoded for the individual pixels of the display. For an 8-bit panel, for example, this is 256 different colors (2^8 = 256). However, since we usually display three different colors per pixel at the same time, in theory about 16 million (256^3) different colors are possible by mixing the three pixels. A 10-bit panel could even display a billion colors.
Contrast ratio
Contrast ratio is a common measurement used to represent the maximum relative differences in brightness between black and white. It describes the ability of a screen or projector to produce a high-contrast image and is the quotient of the maximum and minimum displayable luminance. The higher the values are away from each other, the stronger the quantitatively seen difference between black and white is set up, which in turn results in an improved image quality. This monitor from Sony has a static contrast ratio of 3500 : 1 , according to the manufacturer.
HDR
The monitor supports all HDR modes listed here:
screen design
Sony Specifies the following dimensions for the monitor KDL-40WD655 without stand/feet: 54.9 cm x 92.4 cm x 6.6 cm (HxWxD)
If you want to place the monitor described here on the desk without a wall mount, you should allow for 58.9 x 92.4 x 21.2 cm (HxWxD) of space. As for the weight, Sony states a total weight of 8.1 kg with stand. According to Sony , you can expect a weight of about 7.7 kg without the stand. Speaking of weight without a stand and thus wall or table mounts. The monitor supports a Vesa mounting.
Rotate, tilt and swivel
The monitor from Sony cannot be rotated. The monitor cannot be swiveled. This feature could be retrofitted with a third-party stand. A tilt function was not provided by Sony with the included stand.
Ports
The monitor named ' KDL-40WD655 ' has 1 RJ45 Ethernet port(s), which enables a wired network connection. This port offers users the possibility to connect the device directly to a wired network, which can be beneficial in environments with a reliable and fast internet connection.
camera
This monitor does not have a camera.
Loudspeaker
Features
WiFi / Bluetooth
This model ( KDL-40WD655 ) supports Wi-Fi. This wireless network connection allows devices to display content from a smartphone or tablet, for example, or to download apps from an app store, similar to TVs. However, monitors usually do not have this functionality because they are only operated in connection with a notebook or PC. The protocols are supported: WiFi 802.11b WiFi 802.11g WiFi 802.11n
For a monitor, "WiFi Direct" refers to a feature that allows you to establish a direct connection between the monitor and another WLAN-enabled device without the need for a wireless network. This allows you, for example, to display content from your smartphone or tablet on the monitor without having to be near a WLAN network. The monitor KDL-40WD655 supports this function as a matter of course.
Power consumption
The average consumption was given by Sony as 48 w. The maximum power consumption (peak) specified for this monitor is 78 w. In standby mode, the device consumes approximately 0.5 w. The monitor can be operated on a 220v power supply. The power grid has to supply a frequency of 50 hz to 60 hz.
Environment
The monitor has a built-in ambient light sensor, which can be used, for example, to dynamically adjust the brightness of the monitor to the ambient conditions. During operation, the ambient temperature must not exceed 40 °C , to ensure full functionality. Below a temperature of 0 °C , the monitor from Sony should again not be used. The humidity must not exceed 80 percent. At least, however, 10 percent humidity.
Packaging
The monitor is packaged in a cardboard box measuring 66.2 x 1.0170000000000001 x 16.3 cm (height x width x depth).
Additional information