Network Connectors Explained
Summary
TLDRThis video delves into various network connectors used for different cable types like twisted pair, coaxial, telephone, and fiber optic. It highlights the ubiquitous RJ-45 for local area networks, UTP couplers for cable extension, and the shielded counterpart, RJ-48. The video also covers telephone equipment's RJ-11, coaxial cable's BNC and F-type connectors, and USB's versatility in networking. Fiber optic connectors are explored, emphasizing SC, MTRJ, LC, and ST types, along with UPC vs. APC end faces for reduced signal loss. The presentation concludes with a call to action for engagement.
Takeaways
- đ The RJ-45 is the most common network connector, used for connecting computers and other devices in a local area network with unshielded twisted pair cable.
- đ UTP couplers are used to extend network cables by joining two cables with RJ-45 connectors, useful when a longer cable is not an option.
- đĄïž The RJ-48 connector is similar to RJ-45 but is used with shielded twisted pair cable, primarily for T1 lines and is wired differently.
- đ The RJ-11 is a four-wire connector mainly used for telephone equipment but can also connect computers to a local area network through a modem.
- đĄ The BNC connector, used with coaxial cable, is less common today but can still be found on older networks, used for both analog and digital video and audio transmissions.
- đ© F-type connectors are threaded and typically used on coaxial cables by cable providers to attach to cable modems, also used with satellite internet.
- đŸ USB connectors are versatile and can be used for networking purposes, including wireless adapters and wired network adapters that plug into a computer's USB port.
- đ Fiber optic networks use light pulses to send data and have various connectors, with differences mainly in size and coupling method.
- đ Fiber couplers are used to join two fiber optic connectors of the same type, while fiber adapters are for joining two different types of connectors.
- đĄ The difference between UPC and APC end faces on fiber optic connectors lies in the angle of the end face, with APC reducing signal loss by reflecting light at an angle into the cable wall.
Q & A
What is the most common network connector mentioned in the video?
-The most common network connector mentioned in the video is the RJ-45.
What type of cable is the RJ-45 connector typically used with?
-The RJ-45 connector is typically used with unshielded twisted pair (UTP) cable.
How does the RJ-45 connector secure itself in place?
-The RJ-45 connector secures itself in place with a single locking tab.
What is the purpose of a UTP coupler in networking?
-A UTP coupler is used to connect two UTP cables with RJ-45 connectors to each other, typically to extend a network cable when running a longer cable is not an option.
What is the difference between RJ-45 and RJ-48 connectors?
-The RJ-48 connector looks similar to the RJ-45 but is used with shielded twisted pair cable instead of unshielded twisted pair, and it is primarily used with T1 lines.
What is the primary use of the RJ-11 connector in networking?
-The RJ-11 connector is primarily used to connect computers to a local area network through the computer's modem.
What does BNC stand for and what type of cable does it connect?
-BNC stands for Bayonet NeillâConcelman and it is a type of connector used with coaxial cable.
What is the F-type connector typically used for?
-The F-type connector is typically used on coaxial cables, primarily by cable providers to attach to cable modems, and is also used with satellite internet.
How does the USB connector relate to networking?
-The USB connector can be used for networking through USB wireless adapters or wired network adapters, allowing computers to access networks wirelessly or through an Ethernet cable connected to a USB port.
What are the main differences between fiber optic connectors?
-The main differences between fiber optic connectors are the size and the method they use when coupling, such as push-pull, latching, or bayonet type locks.
What is the difference between UPC and APC end faces on fiber optic connectors?
-UPC (Ultra Physical Contact) end faces reflect light directly back towards the light source, which can cause signal loss, while APC (Angled Physical Contact) end faces have an angled connection that reflects light into the cable wall, reducing signal loss.
Outlines
đ Introduction to Network Connectors
This paragraph introduces various types of connectors used in networking, which differ based on the network and cable types such as twisted pair, coaxial, telephone, or fiber optic. The most common connector, the RJ-45, is discussed in detail. It is an eight-pin connector used for local area networks with unshielded twisted pair cables. The process of crimping the wires and connecting them to devices like switches, modems, or routers is explained. Additionally, the paragraph covers the UTP coupler, which is used to extend network cables by joining two cables with RJ-45 connectors. The RJ-48, used with shielded twisted pair cables for T1 lines, is also mentioned. The RJ-11 connector, primarily for telephone equipment but also used for networking through modems, is described. The BNC connector, used with coaxial cables for analog and digital video and audio transmissions, is noted as less common in modern networks. The F-type connector, used by cable providers for cable modems and satellite internet, is explained. Lastly, USB connectors, used for both wired and wireless networking, are discussed.
đĄ Fiber Optic Connectors and Their Types
This paragraph delves into fiber optic connectors, which use pulses of light to transmit data. It discusses the most popular fiber connectors, focusing on their size and coupling methods. The SC connector, also known as the square connector, is highlighted as one of the first to be used and is commonly used between floors in buildings. The MRTJ connector, designed for high pack density, is noted for its small form factor and resemblance to the RJ-45. The LC connector, developed by Lucent, is recognized for its smaller size compared to the SC, making it suitable for high-density racks and panels. The ST connector, developed by AT&T, is mentioned for its large size and use with single-mode fiber optic cable, though its usage has declined due to the preference for smaller connectors. Fiber couplers and adapters are explained, with couplers used to join two identical fiber optic connectors and adapters used for different connectors. The paragraph concludes with a comparison between UPC and APC end faces on fiber optic connectors, explaining how APC connectors reduce signal loss by reflecting light at an angle rather than directly back towards the source.
Mindmap
Keywords
đĄRJ-45
đĄUnshielded Twisted Pair (UTP) Cable
đĄWire Crimping
đĄRJ-48
đĄRJ-11 Connector
đĄBNC Connector
đĄF-Type Connector
đĄUSB Connector
đĄFiber Optic Connectors
đĄUPC and APC
Highlights
Introduction to different types of connectors used in networking
RJ-45 is the most common network connector used for local area networks with unshielded twisted pair cables
RJ-45 connectors have eight pins and use a wire crimper for attachment
UTP couplers are used to extend network cables by joining two cables with RJ-45 connectors
RJ-48 connectors are similar to RJ-45 but used with shielded twisted pair cables for T1 lines
RJ-11 connectors are primarily used for telephone equipment and can connect computers to a local area network
BNC connectors are used with coaxial cables for analog and digital video transmissions, as well as audio
F-type connectors are threaded and used by cable providers for attaching to cable modems
USB connectors are versatile and can be used for both wired and wireless networking
Fiber optic networks use pulses of light to send data and have various connector types
SC connectors, also known as square connectors, are used between floors in buildings
MRTJ connectors are designed for high pack density and resemble the RJ-45
LC connectors, developed by Lucent, are smaller and used for high-density racks and panels
ST connectors use a half twist bayonet lock and are commonly used with single mode fiber optic cable
Fiber couplers join two fiber optic connectors of the same type, unlike fiber adapters which join different types
UPC and APC end faces on fiber optic connectors affect signal loss during transmission
APC connectors reduce signal loss by reflecting light at an angle rather than directly back
Transcripts
Hello everyone, in this video we're going to talk about the different types of connectors that are Â
used in networking and these connectors will vary depending upon the type of network and the cable Â
that they are attached to. Whether that cable is twisted pair, coaxial, telephone, or fiber optic. Â
And the first one we're going to talk about is the RJ-45. Now the RJ-45 is by far the most common Â
network connector. Now this is an eight pin connector that's used to connect computers and Â
other network devices in a local area network. The RJ-45 is used with unshielded twisted pair cable. Â
Twisted pair cable has eight wires and these wires are arranged in a certain order and then the wires Â
are inserted into an RJ-45 connector and then they are crimped on both ends using a wire crimper. And Â
then one connector would be plugged into the computer's network card and then the other end Â
would plug into a device, such as a switch, modem, or a router. Then once that is done, the computer Â
will be able to connect to a network. The RJ-45 has a single locking tab that locks itself into place. Â
Now this is a UTP coupler. Now this is not really a connector. This is used for connecting Â
UTP cables with RJ-45 connectors to each other. This is typically used when running a longer cable Â
is not an option. It's just used to extend a network cable by joining two cables together using Â
their RJ-45 connectors. So you would just plug one end of the cable into the coupler and then you Â
would plug in another cable on the other side. And now you have successfully extended your UTP cable. Â
And another type of connector that is similar to the RJ-45 is the RJ-48. Now the RJ-48 looks very Â
similar to the RJ45, but the difference between the two is that the RJ-48 is used with shielded Â
twisted pair cable instead of unshielded twisted pair that's used with the RJ-45. Â
The RJ-48 is primarily used with T1 lines and it's also wired differently than the RJ-45. Â
And this is the RJ-11 connector. This is a four wire connector that's mainly used to connect Â
telephone equipment. But as far as networking, the RJ-11 is used to connect computers to a local area Â
network through the computer's modem. The RJ-11 locks itself into place by a single locking tab Â
and it resembles the RJ-45 but it's a little bit smaller. The BNC connector is a type of Â
RJ connector that is used with coaxial cable. BNC stands for Bayonet NeillâConcelman. Â
And the BNC is used with both analog and digital video transmissions, as well as audio . Now these Â
connectors are not very common anymore but they can still be found on older networks. Now there Â
are many different kinds of BNC connectors. So or example here is a BNC-T connector which Â
connects three coaxial cables together. And there is also the BNC coupler, which is used to connect Â
two coaxial cables together. And there is also the BNC terminator, which is used to terminate the Â
ends of a cable. Now this connector is called the F-type. Now this is a threaded connector typically Â
used on coaxial cables. These are primarily used by cable providers to attach to cable modems. Â
So if you have broadband cable like I do, you will have a modem with a coaxial cable attached Â
to an F-type connector that screws into the back of your modem that attaches with a nut. And in Â
addition to being used with broadband cable, they are also used with satellite internet. Â
And there is also the USB connector. The USB is very common on desktops and laptops. And because Â
'universal' is in its name, it can be used for many different purposes, including networking. So for Â
example many manufacturers make USB wireless adapters that plug into a USB port on a computer Â
to give the computer wireless network access. And there is also wired network adapters like Â
this one here, where you would plug an ethernet cable at one end and then the other end into a Â
USB port on a computer and then the computer will be able to access a network through its USB port. Â
So now we're getting into fiber optic connectors. Now fiber optic networks use pulses of light to Â
send data. And there are many different types of fiber optic connectors, but I'm only going to talk Â
about the most popular fiber connectors. But the main differences between these fiber connectors, Â
are the size and the method they use when coupling. So the first fiber optic connector Â
is called the SC or standard connector. And this is often called the square connector. And this was Â
one of the first connectors to be used in the marketplace. This uses a push pull connector, Â
similar to audio and video plugs and these are commonly used between floors in a building. This Â
connector is called the MRTJ which stands for mechanical transfer register jack. And this is Â
a fiber optic connector that uses a latched push pull connection. It has a small form factor that's Â
used for high pack density and it was designed to replace the SC connector. The MRTJ uses two fibers Â
in a single design and it resembles the RJ-45. This connector is becoming increasingly popular Â
in fiber networks today. And our next fiber connector is called the LC or local connector Â
or Lucent connector, since it was developed by Lucent. Now this type of connector is also Â
commonly used between floors in a building and it was designed to compete with the SC connector. Â
It's about half the size of the SC connector which makes it better for highly populated Â
racks and panels and this also uses a latch that locks itself into place similar to the RJ-45. Â
And our last fiber optic connector is called the ST or straight tip. Now this uses a half twist Â
bayonet type of lock and is commonly used with single mode fiber optic cable. Now this is a Â
large size connector that was developed by AT&T. And because of its large size, its usage has Â
declined in favor of smaller connectors, such as the LC and the MTRJ. Now just like UTP couplers, Â
there are also fiber couplers. So if you wanted to join two fiber optic connectors, Â
you would use a fiber coupler. Now fiber couplers are used to join or couple two of the same fiber Â
optic connectors and the two connectors have to be the same. Now these are not to be confused Â
with fiber adapters, because fiber adapters are used for joining two different connectors Â
together. So here we have an example of a fiber coupler joining two ST connectors together. Â
So now we're going to talk about the difference between UPC and APC end faces or tips on fiber Â
optic connectors. And as examples we're going to use a group of ST fiber connectors equipped with Â
UPC and APC end faces. Now when fiber optic connectors make a connection to each other, Â
the point at which the connection is made is not perfect, because of the small imperfections Â
of the flat surfaces. So what happens is at the point where the connectors join, light Â
is transmitted from one connector to the other connector. But at the point where light passes to Â
the other connector, the light will reflect back in the opposite direction towards the light source Â
and when this happens, there is signal loss. And this is what happens in UPC connectors. The light Â
is reflected directly back. So as technology progressed, a new connector was developed to Â
decrease the signal loss. And this new connector is called the APC connector. Now the difference Â
between the UPC and the APC is the angle of the end face or tip where the connection is made. So Â
as I said before, with the UPC, the light reflects back towards the light source. But with the APC, Â
with its angled connection, the light doesn't reflect back towards the light source, Â
it reflects back at an angle into the wall of the cable. And as a result, this greatly reduces Â
the signal loss. So thank you everyone for watching this video on network connectors Â
please subscribe, follow me on twitter, and thank you for watching
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