Are you interested in weather on Mars?

NASA has reported that the unmanned InSight lander sent to Mars landed close to the equator and now is operating under Martian winter conditions (it is the time when storms become more active). The daily weather information from the Elysium Planitia volcanic plain on Mars has been provided since February 11 and it contains data on air temperature, wind speed and atmosphere pressure.
To collect all that information, InSight has been equipped with a set of sensors developed by NASA Jet Propulsion Laboratory, Cornell University, and the Spanish Centro de Astrobiología. The entire Auxiliary Payload Subsystem (APSS) consists of several sensors measuring a number of weather parameters. It collects data every second of every Martian day (one Martian day is only a little longer than the Earth's day: 24 hours, 39 minutes and 35 seconds).
The APSS consists of an air pressure sensor located inside the lander, a pair of sensors for measuring temperature and wind called TWINS, located on the opposite sides of the top surface of the lander, and a magnetometer (the first one ever reaching the surface of another planet). One of the TWINS sensors is directed to the east and the second to the west. InSight transmits daily weather reports and scientists hope to investigate seasonal variations of the atmosphere conditions on Mars.

A visualization of the Insight lander
Here you can check almost current weather on Mars

Researchers want to examine what conditions are conducive to the formation of sandstorms and dunes. The APSS system will also help the mission team learn more about dust devils (vortices of low pressure) that have left characteristic streaks on the surface of the planet.

Which DVB-T amplifiers should be used in multiswitch systems with passive terrestrial paths?

The purpose of broadband amplifiers in multiswitch installations is to amplify terrestrial signals so that to compensate the attenuation of the distribution networks caused by splitters, taps, cables and antenna outlets. They have one broadband or several band inputs with adjustable gain for individual bands. Depending on the model, they are equipped with built-in power supplies or are powered via the coaxial cable that transmits the amplified signals. Usually they can compensate the influence of the frequency characteristics of cable lines on the output signal levels in subscriber outlets. They are characterized by a high maximum output level of over 100 dBμV.

Signal MRP multiswitches have passive terrestrial paths, so we recommend to employ an antenna preamplifier or amplifier that will compensate the attenuation of the path (12-15 dB) and other passive elements in the distribution network (cables, connectors, outlets). When selecting the pre/amplifier, it is necessary to take into account the signal level from the terrestrial transmitters (depending on their power, distance, obstacles, antenna(s) gain).

The model should be chosen depending on the local needs (required bands or frequency range, gain, output level).

Distribution of DVB-S/S2, DVB-T and FM/DAB signal to four outlets,
with the AWS-141SE B11687 amplifier in the terrestrial path

Turbo HD 4.0 DVRs – fully hybrid solutions.

The firmware upgrade V4.x (links available on the product pages) of Hikvision Turbo HD 4.0 (HD-TVI 4.0) analog DVRs provides the possibility to use them in hybrid mode. Each analog channel can be switched off and replaced by IP channel. The maximum number of IP channels depends on the series and model:

The hybrid functionality is available in all TurboHD 4.0 DVRs, also those with PoC ports. The PoC solution allows for connecting each PoE IP camera via single UTP cable. A mixed monitoring system with analog and IP cameras (powered from PoC ports of the DVR and PoE ports of the network switch) is shown in the diagram below.

Dynamic motion analysis in Hikvision IP cameras.

Hikvision IP cameras have the option of dynamic motion analysis that allows for:

Depending on the options activated in the camera, the range of functions includes:

If all the above-mentioned options are active, then after logging in to the camera via a web browser or from the NVR, the user will see in the real-time video the squares symbolizing places with motion detected in the previously drawn detection area. This allows the user to analyze how motion is being detected at various distances from the camera and to set the required sensitivity of the detection. Below there is an example of how the hand movements are detected at the same distance from the camera, but at detection levels of 20% and 80%.

In the case of continuous recording set on the NVR, an additional bar appears under the progress bar, with marked motion detection events. The continuous recording mode guarantees complete video coverage, whereas the marked motion detection events allow the user to quickly filter out periods with these specific events. The user can also employ smart search function just by selecting the required detection area. After defining the area, the detection bar will show only recordings that meet this criterion.

Turning off the rules will cause that the squares that symbolize motion detection will not be displayed by a web browser in live view. After disabling Dual-VCA, the additional information will not be added to the video stream, and smart search will not be possible on the NVR. However, with active dynamic motion analysis, the markings of detected motion events will be displayed under the progress bar.

10 Gbps in one optical fiber.

Internet service providers building their networks in larger areas or leasing the infrastructure of larger operators have to use the available fibers as effectively as possible. SFP modules using one fiber for two-way communication are a good choice for such applications.

The 10 Gbps data transfer rate has become a standard for backbone connections even in the case of smaller operators. The Ultimode L1430 and L1432 SFP+ modules are used to create such single-mode links via single optical fibers. The modules operate at 1270 nm and 1330 nm wavelengths, i.e. in the second transmission window that is safest in terms of any installation imperfections (poor quality splices, fiber bends, etc.).

HDMI to IP converter/extender for conference rooms.

Signal-HD HDMI to IP converter/extender H3621 enables the user to connect remote (up to 100 m) source of HD content to HD-enabled television/monitor/projector, using one CAT5e/6 cable. The set includes transmitter and receiver units. The transmitter and receiver units should be mounted in electrical boxes (minimum depth of 80 mm).

The system is perfect e.g. for connecting a computer to a projector. The connection requires the use of only one, comparatively thin cable, which makes it easy to hide it.

Distinguishing features:

• Transmission via a single Cat. 5e/6 cable
• UDP/IP protocol (multicast)
• Units to be mounted in electrical boxes
• Support for 1080p mode
• Maximum length of the cable: 100 meters

An application of the HDMI > IP converter/extender (point-to-point)

February 20, 2019 - DIPOL is the best dealer of Hikvision products. Hikvision has awarded DIPOL company with a diploma for achieving the best sales result in 2018 among all dealers. We thank all our customers that helped us accomplish such high sales.
HIKVISION is the biggest supplier of video surveillance solutions and devices in the world. The company employs over 26,000 people, and, according to Security 50 Ranking for 2018, in 2017 achieved the total revenue of 5.3 billion USD (26% increase year to year), which gave it yet again the first place in the security industry.

SMATV system in a large hotel complex. The designer had to satisfy three main requirements. First of all, the installation was to cover 5 buildings of the large complex. Secondly, the system was to distribute DVB-T signals from the local transmitter, and thirdly, the satellite channels (15) had to be converted to the form of digital DVB-T signals and distributed along with the terrestrial channels.
In order to ensure the best possible quality of the terrestrial TV signals and to equalize signal levels at the installation's input, the contractor decided to use the digitally programmed four-channel TERRA AT440 R82511 amplifier. Additionally, in order to introduce signals from VHF and FM bands, the multi-input FM/VHF/UHF ma400 R82520 amplifier was used... >>>more

Diagram of the optical/copper SMATV system distributing the programming (4 terrestrial DVB-T multiplexes and 8 DVB-T multiplexes formed from satellite channels by the tdx-480 R81621 transmodulator) to the five hotel buildings. The combined signals are split to three paths by the R-3 R60103 splitter and further distributed in the building with the technical room. Other buildings receive the signals in the optical form, via single-mode fibers.

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