Comparison Gazer HR250 vs Baxster BHA10232H Flat

Diagonal screen size of the car monitor in inches. The larger the screen, the larger the image on it and the easier it is to view it from a distance. At the same time, large displays require an appropriate amount of space for installation, which can be critical in cramped car interior conditions. And looking at a large screen up close is not always convenient.

For most types of auto monitors (see "Installation"), the diagonal from 7" to 10" is considered optimal. At the same time, ceiling models can significantly exceed this figure, reaching 15 "and even more. Devices for installation in a mirror, on the contrary, have small displays of 3-4" (more are not required for them). If the characteristics of the mirror monitor indicate a large screen of 7-10", most often this means a display elongated in width, the image on which is divided into 2-3 parts (for example, for simultaneous broadcasting from different parking cameras).

The screen resolution of a self-monitor indicates the number of luminous dots (pixels) that make up the visible image. It is usually written in two numbers, indicating the size in pixels horizontally and vertically. In this case, we can say that the higher this indicator, the clearer and more detailed image the monitor is able to provide. This is especially important for large screens (see "Diagonal"), on which graininess from a low resolution would be especially noticeable. In addition, appropriate displays are also recommended for watching movies in high quality, detailed photos and other similar content — otherwise, all the initial advantages of the “picture” may be negated.

Android-based software firmware greatly expands the capabilities of the auto monitor, actually turning it into a portable computer. Car monitors on Android not only contain an extensive set of software, but also allow you to install additional applications for a very diverse purpose. And the variety of versions indicates the relevance of the firmware and its technical equipment.

The name of the processor model (CPU) allows you to find detailed data on a particular CPU and evaluate its level and general capabilities. This is especially true in light of the fact that these capabilities depend not only on the number of cores and clock speed, but also on the specific nuances of the design.

As for the number of cores, this concept refers to the part of the processor that executes one instruction stream. Accordingly, the presence of multiple cores allows you to work with multiple threads simultaneously, which has a positive effect on performance. Theoretically, more cores can improve processor efficiency. However, in fact, CPU performance depends on so many additional factors that the number of cores in comparison to this is purely a reference parameter.

The processor frequency determines how many operations per second the CPU can perform. Accordingly, a higher frequency indicates increased computing power. However, the actual performance of the processor, as in the case of cores, depends on other factors.

Do not forget that the capabilities of the entire system depend not only on the CPU, but also on the amount of RAM, the operating system used, and a number of other characteristics. And manufacturers usually select such processors that would allow devices to cope with all basic tasks normally.

The amount of random access memory (RAM) installed in the monitor.

In general, this volume is selected by the manufacturer in such a way that the device can normally cope with the tasks that are claimed for it. On the other hand, ceteris paribus, more RAM usually means faster performance. This parameter is especially important if the model works under the Android OS: such firmware allows the installation of additional applications that may have rather high requirements for RAM.

The amount of memory installed in the auto monitor to store content in the device. The larger size is especially relevant given that modern models allow the installation of additional applications that expand the capabilities — and these applications also require space. However, do not forget that the device system also requires space. And manufacturers under the volume can indicate both the total value and the free memory calculated for installing applications.

— Wi-Fi. The presence of a Wi-Fi wireless module in the monitor allows you to maintain a classic connection to Wi-Fi access points for accessing the Internet. Or it facilitates the connection, for example, with a smartphone for remote control and exchange of various data. Specify the specific method of Wi-Fi operation separately for each model.

-MirrorLink/AirPlay. These technologies are designed to allow the device to interact with a smartphone/tablet. The desktop of the connected device is displayed on the monitor screen and can be controlled directly from it, while holding the smartphone in a bag or pocket. For Android, MirroLink technology for Apple is announced, respectively AirPlay, but in car monitors they are mostly paired.

— 3G/4G ready. Possibility to connect an external modem for mobile networks to the automonitor. Such models are suitable for those who are not sure whether they will need an additional Internet connection. You can purchase a monitor without overpaying for the built-in modem, and if necessary, purchase an adapter separately.

— FM tuner. A device for receiving FM radio broadcasts. The vast majority of modern "urban" music radio stations broadcast in this range, in particular because it allows you to transmit stereo sound. Accordingly, a car monitor with an FM tuner is useful fo...r those who like to listen to such stations.

— CD / DVD player. The monitor has a built-in CD and DVD optical disc player. This function allows you to listen to music and watch movies from discs without using any auxiliary equipment such as portable players, radios, etc. Installation of such equipment can be associated with a number of problems, if not completely unavailable; therefore, it is often more convenient to buy a monitor with a built-in player.

— USB input. The presence of a USB input allows you to connect various external media with the appropriate connector to the car monitor — primarily portable “flash drives”, but it can also be external hard drives, external card readers (see below about the card reader) and even smartphones and cameras. Thus, you can play information (video, music, and sometimes photos) from these media directly, without any additional equipment.

— Card Reader. The monitor has a memory card reader. Such cards are widely used as information carriers in modern portable technology, in particular photo and video cameras. The card reader allows you to play information from memory cards directly — so you can, for example, view photos from a family event or video captured by a car DVR on the monitor. In some cases, this format of working with media is more convenient than connecting the camera itself or an external card reader via USB (see above) — the main thing is that the monitor supports the appropriate format of memory cards.

— Analogue TV tuner. A device for receiving on-air television broadcasts in analogue format. Despite the development of digital standards, this type is still popular in the CIS countries, in particular in Ukraine and Russia. Therefore, for watching TV, an analogue TV tuner can be very useful. Separately, we note that the presence of a TV tuner(analogue or digital, see below) is mandatory for car TVs and their key difference from car monitors.

— DVB-T tuner. Device for receiving on-air TV programs in DVB-T2 digital format. The main advantage of digital TV broadcasting in general is the high quality of the image, which, moreover, does not depend on the signal strength: the “picture” and sound are either in full quality or absent altogether. Yes, and resistance to interference in digital standards is much higher than in analogue. At the same time, DVB-T is gradually disappearing from the scene, giving way to the more advanced DVB-T2: in particular, the national digital broadcasting networks in Ukraine and Russia are based on DVB-T2 and are not compatible with DVB-T tuners. Therefore, it is worth looking specifically for a TV with a tuner of this type only if you know for sure that DVB-T digital broadcasting is available in your region.

— AV input(composite). Combined input for connecting an external source of audio and/or video signal in analogue format to the car monitor. The full-size composite interface assumes the presence of 3 RCA connectors — one for video and two for the left and right audio channels. However, “stripped down” versions can also be found in auto monitors — for example, with 2 RCA connectors (video + monophonic sound) or even with one “tulip”, only for video transmission. In addition, in compact models (in particular, mounted instead of a mirror, see "Installation"), this input can use a 3.5 mm mini-Jack connector. Anyway, the composite interface is one of the most common, it is supported even by outdated video equipment, but it has rather modest characteristics and is unsuitable for working with HD video. However, the latter is critical only for the most large-format auto monitors — it is in them that high resolutions are found, the performance of smaller models is noticeably more modest.

— Linear. Analogue input for connecting an external audio source, such as a portable player or DVD player, to the car monitor. This allows you to broadcast sound either through the monitor's own speaker (if available, see "Features"), or through an audio system or headphones connected to it (see "Outputs").

— For reversing camera. Separate input for connection to the reverse...camera car monitor. Note that the name of these cameras is rather conditional, because. they can be installed not only at the rear, but also at the front or on the sides. Anyway, such devices help the driver to see dead zones that cannot be seen from the passenger compartment either directly or through the mirror. In this case, the “rear” camera usually turns on automatically when reverse gear is engaged, and the image from it is transmitted to the screen, regardless of what was shown there before (movie, splash screen, etc.). The camera input is only available on models designed for viewing from the driver's seat; most often it is found in car monitors with installation in a mirror, less often — in models for dashboards, and in isolated cases — in devices with a different type of installation (see "Installation"). To use the reversing camera effectively, you may need to use the “mirror image flip” function (see above for details).

— HDMI port. HDMI is actually the most popular modern audio and video interface. It provides the transmission of a signal in digital format and allows you to work with high-definition video (in the latest versions — ultra-high) resolution, as well as multi-channel audio. The presence of such an input in the car monitor makes it possible to connect various external signal sources to it — for example, laptops, for which an HDMI output is practically mandatory, or smartphones, in which this interface is also found.