If you’re planning to purchase Ethernet cables, you’ll need to decide if you want STP (shielded twisted pair) or UTP (unshielded twisted pair) cables. Choosing between them can be challenging if you’re not familiar with the differences. In this blog, we will discuss the differences between UTP and STP cables so you can decide which type is right for your needs.
Why Are There STP and UTP Cables?
Electromagnetic interference (EMI), also known as radio frequency interference (RFI), can cause disturbances in cables during data communication. EMI is caused by an external source that affects an electrical circuit through electrostatic coupling, electromagnetic induction, or conduction. External sources can either be natural or man-made. Examples of natural sources include the sun and thunderstorms, while examples of man-made sources include vehicle ignition systems and cell phones. Shielding is a method used to protect cabling systems from electromagnetic interference, which can cause data errors and affect transmission quality. To reduce or prevent EMI, one protective method used for cabling systems is called shielding.
What Are STP Cables?
The shield in an STP cable is made of either copper tape, a conducting polymer layer, or a copper or aluminum braid. Some examples of shielding types are braided shields, foil shields, and screening. There are various levels of shielding for cables, such as STP, SSTP (screened shielded twisted pair), and FTP (foil twisted pair). The shielding can be applied to individual pairs or to all pairs in the cable.
Advantages of STP Cables
Using shielded twisted pair (STP) cables can improve the quality of data transmission in buildings that have microwave equipment, HVAC systems, or radio transmitters, as the shield can reduce electromagnetic interference. STP cables block interference better than UTP cables, especially from devices like power tools and vacuum cleaners. While UTP cables also reduce interference, their performance is not as strong.
Proper installation and maintenance of STP cables can also help decrease crosstalk. The special construction of STP cables can prevent signals from escaping through the outer coating and interfering with adjacent wires. When you have many network devices in your building, it’s important to use STP cables to prevent crosstalk.
What Are UTP Cables?
UTP cables are designed without shielding, but they still reduce electromagnetic interference by twisting their pairs. This unique design makes UTP cables lighter and thinner compared to STP cables.
Advantages of UTP Cables
To start, UTP cables are easier to install and maintain. UTP cables are thinner than STP cables and do not have any shields. This makes them easier to install and maintain in limited spaces. Compared to STP cables, UTP cables and their associated hardware are also less expensive.
Applications
Both STP and UTP cables are used in different environments because they have distinct characteristics. STP cables are frequently utilized in environments where there is equipment that generates EMI. For instance, airports, medical centers, and factories have various machines that can cause interference, and therefore, STP cables are commonly used. STP cables are beneficial for running cables near fluorescent lights, powerful motors, or microwave ovens. Additionally, they can be utilized in outdoor environments. Outdoor surveillance cameras typically use STP cables to reduce EMI and ensure signal reliability. Security cameras rely on STP cabling because they can avoid interference generated by vehicles and power lines. STP cables also prevent criminals from using jammers to disrupt the communication between cameras, indoor monitors, or recording devices.
UTP cables can be used in offices and homes and are a cheaper alternative to STP cables. If you are not primarily concerned about interference or crosstalk, it is recommended that you choose UTP cables. Be cautious when choosing cables for your network if your location has strong magnetic fields. Using UTP cables may result in slower network speeds or network failure. It is recommended to carefully assess possible sources of interference before deciding.
ADD Communications: Cabling and Network Solutions
To improve your network performance and extend the lifespan of your equipment, it’s important to choose the right cable. Before making a decision, make sure you are familiar with the differences between STP and UTP cables. ADD Communications is proud to provide cabling solutions tailored to your requirements. We offer a variety of cabling services that guarantee optimal network performance and reliability. Our experienced technicians can install the right cable for your business or home quickly, cost-effectively, and safely. Contact us today to get started!
