DIPOL Weekly Review – TV and SAT TV, CCTV, WLAN

Google promises a quantum computer by 2029.

At I/O 2021, Google revealed its plans for developing a quantum computer. It is to develop a functional quantum computer with an error correction functionality within the next decade. While today's quantum computers are typically under a hundred cubits, it takes as many as a million cubits to create a functional machine. To do this, the quantum equivalent of the transistor needed to build error-correcting logic circuits must be created. For one logical qubit, about a thousand physical qubits will be needed, according to a Google engineer. Then the logical qubits will have to be combined somehow and methods of error correction and qubit coding will have to be developed.

Today's Google Sycamore quantum processor has 54 individually controllable qubits and 88 tunable couplers. The couplers are used to perform high-speed quantum operations between qubits.

The basic unit of quantum information is the quantum bit, or qubit. It is made up of elementary particles, such as electrons or photons. They differ from bits in that they do not reach a fixed state, but are in any superposition of two quantum states. This allows quantum computers to simulate natural systems made up of molecules. The bonds and interactions between atoms in a given molecule or a larger system operate in a probabilistic way, i.e. they have a random state. Programming classical machines to simulate such systems is virtually impossible and requires great computing power. Quantum computers are supposed to simulate the behavior of molecules and pave the way for the development of better solutions (e.g., new types of batteries, more efficient fertilizers, more targeted drugs that could stop the next pandemic before it starts).

A view of one of the cryostats that keeps the temperature of a quantum computer low enough to reduce errors

Google is investing heavily in quantum computer development: it has built a lab facility and factory in California. Finalizing the work on a quantum computer could lead to breakthroughs in many industries, such as medicine, weather prediction, financial computing, cryptography and artificial intelligence.
Google is not the only one trying to create an efficient quantum computer. Similar efforts are being made by other tech giants like Microsoft, IBM and Facebook.

Ultipower 3124SFP – industrial and manageable.

The ULTIPOWER 3124SFP N299748 poE is a device dedicated to industrial applications, providing smooth network transmission. in 10/100/1000 Mbps Ethernet networks. Its 12 RJ45 ports support auto-negotiation and power over Ethernet (PoE function). The switch automatically detects PD devices compliant with IEEE 802.3af or IEEE 802.3at standard and provides them with power supply. This way, it is easy to power network devices located in places without access to AC lines, such as access points, IP cameras, IP phones etc. The switch is equipped with four SFP 1000 Mbps ports.

Furthermore, the managed device supports the following functions:

Switches of this type should be used in systems in industrial facilities with a risk of adverse conditions for the equipment operation, such as: increased dust, high or low temperature or high humidity. Installation of industrial switches is also recommended for cabling on poles with the use of sealed enclosures. The switches have Gigabit Ethernet ports for connecting of such devices as IP cameras or PCs. All ports have PoE capability.

ULTIPOWER 3124SFP 12xGE (12x POE 802.3af/at), 4xSFP N299748 industrial PoE switch

F MASTER connectors in TV/SAT systems.

F-type connectors are used for making connections in coaxial cable systems with the impedance of 75 ohm. They are available in straight and angled versions. They are used in terrestrial, satellite, and cable TV systems, as well as in CCTV systems. The reliability of the connection, attenuation level, and impedance matching in the signal path depend on the design and quality of the connectors. Top quality MASTER crimped connectors guarantee long-term and failure-free operation even in the most harsh environment.

Proper design and excellent accuracy of workmanship of the MASTER connectors guarantees trouble-free installation. The connectors have very precise threads which eliminates common difficulties with screwing the connector onto the socket. Crimping method of the connectors ensures high mechanical strength, tightness and stability over time. To crimp straight connectors on the cable use the universal crimping tool E80075, and for angled connectors use the E80078 tool.

Animation of a crimped connector principle MASTER

Splicing programs in Signal Fire splicers.

Installers often ask if Signal Fire AI-8C L5870 and AI-9 L5875 splicers are capable of joining fibers of different standards: G.652D, G.657A1, G.657A2, G.657B3 or OM2, OM3, OM4 etc.

Signal Fire fusion splicers offer three splicing programs: SM (single-mode), MM (multi-mode) and Auto (automated). Using a single program, say SM, you can splice single-mode fibers of any standard; practice shows that the splicer works equally well with fibers of the same and of different kinds (e.g. G.652D with G.657A2). Similarly, the MM program allows to join two multi-mode fibers together. This is very convenient; the parameters of the resultant splice may, but to not have to, be poorer.

More expensive models of fiber optic splicers from other manufacturers may have individual programs dedicated to specific fiber standards. However, as the installer’s practice shows, using them does not affect, or has a minimal beneficial effect on, the splicing. For that reason, most users opt for the fast automatic mode anyway.

Messaging users of Hikvision IP video intercom system from iVMS-4200 application.

The iVMS-4200 application allows you to send messages to selected tenants. It is particularly useful in more complex systems, as it allows you to quickly convey important information to all users such as notification about breakdowns, maintenance activities or management-related issues. Messages can be sent after configuring the system, creating an organization, adding authorized users and assigning them to individual indoor station (completing the resident information). To do this, after starting the iVMS-4200 application, go to the tab:

After the available options are completed (message subject, type, photo, content) and confirming with the Send button, the message will be displayed on the monitors of the indicated subscribers.

Snapshot of the window for sending messages to selected subscribers of the IP video intercom system using the iVMS-4200 (v3) application

How to solve the problem of voltage drop on a long power line? PSCU04344SEP M1833 power supply is designed to power devices over long cable sections. In order to eliminate voltage drops on a device caused by current flowing through a conductor with significant resistance, the power supply delivers DC voltage increased to 30-35 V to the power line. The cameras are equipped with DCDC10H M1834 converters providing stable 12 VDC voltage with a maximum current of 0.8 A. The PSU features 4 independent, galvanically separated outputs protected by fuses...>>>more

Application diagram of the PSCU04344SEP M1833 power supply

Fiber-optic cables guide