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What is CATV cable used for?

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What does CATV stand for? “Community antenna television” now often known as “Community access television” We always like to use caution with CATV vs CCTV cables because they are in many ways different.

CATV cables are constructed using Copper Covered Steel “CCS” mainly for strength when consumers push and pull the coax out of TV’s or monitors, next CATV cable use a bonded foil shield and a aluminum braid as to prevent RF leakage which results in fines from the FCC.

Also CATV cable transmit from low to hi frequencies 5Mhz to 3Ghz as compare to CCTV in low current data signals.

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What is coaxial cable and how is it used?

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Coaxial cable is commonly used by cable operators, telephone companies, and internet providers around the world to convey data, video, and voice communications to customers. It has also been used extensively within homes.

It has been around for a long time as a technology (since the early 20th century) and has many singular advantages for reliable, accurate transmission.

It also has limitations that will cause it to be replaced in some cases by fiber optic cable, category cable or, sometimes, by wireless signals.

The key to the coaxial cable’s success has been its shielded design, which allows the cable’s copper core to transmit data quickly, without succumbing to interference or damage from environment factors.

What is coaxial cable?

Coaxial cable is a type of cable that has an inner conductor surrounded by an insulating layer, surrounded by a conductive shielding. Many also have an insulating outer jacket The diagram below illustrates the construction of a typical cable. Electrical signal flows through the center conductor.

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Indoor Ftth Cables

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Indoor FTTH cables are used inside buildings or houses; it connects to the FTTH user end equipment. Along with the fast development of the fiber optic networks and broadband LANs, indoor ftth cables are more and more used to meet the requirement for optical fiber to be deployed to the homes and houses. By using the FTTH solutions, video, audio and data signals could all be transmitted via optical fiber, thus the indoor ftth cables demand is growing.

Indoor use FTTH cables have the same function of the common indoor fiber cables, but it does have some special features. Indoor ftth cables are small diameter, water-resistant, soft and bendable, easy to deploy and maintenance. Special indoor FTTH cables will also meet the requirement of thunder-proof, anti-rodent or waterproof.

We have long history providing the FTTH cables for indoor use; the fiber count typically is 1, 2 till 12 optical fiber strands. Our FTTH cables are all LSZH types and flame retardant, they meet the RoHS standards and with super optical performance. We provide a series of FTTH solution products include the FTTH termination boxes, FTTH fiber cables, FTTH optical fiber connectors, FTTH fiber faceplates, tools and equipment. Welcome to contact us for your FTTH products’s needs.

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Powered combo cable

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A compact version of combo cable, designed specifically for DMX lighting applications offering the ability to run DMX signal and power down one tidy combo cable. Now with an imressivly thin 9.5mm overall diameter.

Advantages:

  • Parallel control for lighting boards through one combo cable via power line and DMX signal
  • Very flexible and enormously tread-resistant due to the round jacket made of cotton and viscose
  • Very good pairwise shielding of the DMX lines due to tinned helical copper mesh screen or copper braiding

Application:

  • Control line for DMX lighting consoles (wave impedance of )
  • Analogue + digital audio multipair with power supply
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A Guide to Types of Speaker Cable

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The age old argument of speaker cable quality has raged between audiophiles since the dawn of time (well not really, but certainly for quite a while). Some argue the quality of speaker cables is just as important as the quality of the Hi-fi components they’re connecting. Other enthusiasts save their cash buying budget cables and claim that they make no difference to the sound quality whatsoever.

So rather than poking our nose between these two opposing camps and risk getting dragged into the ongoing battle, lets elude the heated quarrel and instead offer up an overview of speaker cable jargon and give you some useful tips on how to buy your own.

How does resistance affect performance?

Generally speaking, resistance starts to have an effect on the performance of a speaker when resistance is greater than 5% of the speaker’s impedance. Resistance is affected by two key aspects: wire length and the cross sectional area of the wire. The shorter the wire is, the less resistance it will have. The trick here is to minimise wire lengths where possible but still ensure your speakers are positioned apart. It’s also important that the wire lengths to both speakers are the same to ensure they both have equal impedance values.

The cross sectional area of the wire is referring to the thickness, or gauge, of the wire. The thicker a wire or the lower the gauge, the less resistance. It is therefore a combination between speaker impedance, length and gauge that affects the resistance. The below table illustrates suggested speaker cable lengths that will ensure your speaker cable has a resistance less than 5% of your speaker’s nominal impedance given differing gauge measurements.

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How is Coaxial Cable Constructed?

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Patented in 1880, coaxial cable has been a standard means of delivering high frequency electrical signals over distances with low signal loss. It has many applications, including telephone trunk lines, cable television signals, and cell phone boosters. Cables come in many sizes and lengths, each designed for a specific application.

Coaxial cable has an inner and outer core that share a geometric axis. This prevents electromagnetic interference and enables more reliable data transmission over longer distances.

Coaxial cable is constructed from a single copper or copper-coated steel wire as the center core which carries the high frequency signal. This wire is surrounded by a dielectric insulator, often made of plastic, which keeps a constant distance between the center conductor and the next layer. This insulator is wrapped with a metal shield made of woven copper, aluminum or other metal. This cancels outside electromagnetic interference. The final layer is a rubber wrapper that insulates the whole configuration.

Coaxial cable can be used in both indoor and outdoor applications with a few differences. Coax used outdoors requires additional insulation to protect the wires from sun and moisture. Cables rated for outdoor use may run along the outside of your home to a satellite dish or to the cable box on the corner. Whether out in the sun or buried in the earth, the cable needs to be protected enough to provide seamless transmissions.

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Frequently Asked Questions: Security Cable and Fire Alarm Cable

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What’s the difference between power limited cables and non-power limited cables?

The difference between power limited cables and non-power limited cables comes down to which sections of NEC they comply with. Non-power limited cables is a fire alarm circuit powered by a source that complies with NEC sections 760-21 and 760-23. Power limited cables is a fire alarm circuit powered by a source that complies with section 760-41.

Generally, how do I know what kind of fire alarm cable I need?

Fire alarm cables are placed into three broad categories: plenum, non-plenum, and riser. Each of these corresponds to another standardized category. Plenum cable, to be used in ducts or other enclosed air spaces, is called FPLP; non-plenum cable, to be used in applications such as surface wiring, is FPL; and riser cable, which can be used in applications that go vertically from floor to floor, is FPLR. All of these names reflect where the fire alarm cable can be installed safely. Once you know where you will install the cable, you know in which category to start looking.

What are some important safety precautions to consider when choosing fire alarm cable?

There are many safety precautions such as voltage, abrasion resistance, chemical resistance, etc., that should be considered in choosing any kind of electrical cable, including that for fire alarms. However, there are some notable fire-related safety precautions to consider as well. First is the fire resistance of the cable – will it burn and/or how long will it burn? Another is smoke propagation — how much will it give off if it comes in contact with fire? These considerations should be made when choosing any type of electrical cable, but they are especially important in the case of fire alarm cable which must function in emergency situations and under extreme conditions.

Most safety concerns (including these fire-related ones) are regulated by the UL, NEC, and other standards organizations and guidelines. The NEC outlines acceptable limits for burning and smoke emissions while the UL and other organizations are responsible for the development of various flame tests cables must pass in order to be considered safe for use.

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Flexible coaxial cable

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As the name implies, flexible coaxial cable can move and flex as needed to suit the configuration and geometry of the application. A typical design for flexible coaxial cable utilizes a metal inner conductor surrounded by a flexible polymer that functions as the dielectric, with an outer jacket for protection from the environment.

When there is a need to increase flexibility, the metal core conductor may be switched to a stranded design from a solid wire, and a polyethylene (PE) dielectric foam may be substituted for the more rigid dielectric material.

Flexible coaxial cable is the most common type of coaxial cable, familiar to anyone who has seen it in use for the connection of home video equipment and televisions.

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Types of Data Cable

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Data cables are everywhere. If you’ve ever needed to charge anything, from smartphones to tablets, to cameras and even new laptops, you’ve likely needed to use one. However, data cables come in different shapes and sizes despite the fact a lot of them do the same things. In this short and handy guide, we’ll take a look at all the different types of data cables available on the market and give you some examples where you might find them in use.

Data Type-A

Data Type-A connectors are extremely common and will likely be at one end of a lot of data cables nowadays. You can connect various devices such as smartphones, cameras, keyboards, and more to computers to transfer data, or plug into wall chargers to charge these gadgets with a Type-A port.

Data Type-B

This was the standard for various devices a while back but was quickly replaced by the micro-data connector mentioned below. You’ll find it on older models of various gadgets especially cameras, MP3 players, and game controllers, among others. As its name suggests, it’s smaller than a regular data, but larger when compared to its successor.

Micro-Data

The micro-data connector is very small and it let manufacturers produce slimmer devices. Micro-data was widely adopted but is quickly being left behind. That said, some ultra-affordable smartphones even now come with micro-data ports. You might find micro-data ports on certain accessories like Bluetooth speakers, wireless earphones, smartwatch charging stands, and more as well.

Data-C

Data-C, previously known as data Type-C, is the latest king of the hill. You will find it on most new devices, and it offers faster data transfer rates than previous data versions. The biggest advantage of data-C is that it’s reversible and can be plugged in either up or down. It has become the new standard for mobile devices. Universal adoption is still a little ways away, but it’s never been closer than with data-C.

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Travel Lock Combo Cable

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With airport security becoming an ever more serious issue, we want you to arrive at your destination with your luggage still locked and secure, without having your padlocks cut off or worse, your zip sliders cut off.

Features:

– Three-dial combination lock – Perfect for lockable zip sliders and joining most double-pull zips
– Combo Cable – Adds versatility for oversize zips or unusual closures and keeping several bags together.
– Cardkey – A very lightweight lock with cable which uses a credit card and key-ring sized key-cards you keep in – your wallet or travel documents.

If you are looking for Sea to summit TSA Travel Lock Combo Cable, you are lucky. In our outdoor store, you have the best price available and with the confidence that the store gives you. Do not wait any longer and place the order of your Backpacks and suitcases products. We offer an exclusive range of Accessories for different kind of activities. Our Accessories are designed to suit your needs and give you complete control, no matter of weather.

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