OM5 Fiber Inside Out

July 11, 2019 at 8:00 AM

 

Multimode fiber cable has long been a versatile connectivity solution with high capability and reliability for local area networks and voice, video and data applications. With the introduction of OM5, wideband multimode fiber expanded its reach into data centers and connected buildings worldwide. Here, we’ll take a look at all the details of OM5, from the inside out.

 

The core size of OM5 is 50 µm, the same as OM2, OM3 and OM4. It is distinguished from other types of multimode fiber by its lime green jacket. Plus, OM5 has a clearly defined effective modal bandwidth (EMB) and fiber cable attenuation that performs across at least four low-cost wavelengths in the 840 nm to 953nm. It was created to provide optimal support of shortwave division multiplexing (SWDM) applications, which reduce the amount of fibers needed for high speed transmissions.

 

OM5 has all the capabilities of OM4 plus more, including the addition of bend tolerant characteristics. It has the ability to support four SWDM channels. Across the whole wavelength range, it can support 40GBASE-SR4, 100GBASE-SR4 Ethernet and 32G Fibre Chanel applications. OM5 cabling is backward compatible with OM3 and OM4 cabling at 850 nm and it supports all legacy applications.

 

Check out our extensive offering of fiber optic cables and products including our new line of OM5 fiber cables for high-speed data center applications.

 

Video Blog: Ruggedized Connectivity Solutions

June 27, 2019 at 8:00 AM

 

In harsh industrial and military settings, standard commercial connectivity components will fail causing expensive downtime and even danger to lives in some military applications.

 

To address these demanding applications, specialized cables, connectors and other connectivity products must be used to ensure network uptime and performance.

 

Ruggedized cabling and interconnects must be able to withstand conditions such as extreme temperatures, moisture, corrosive chemicals, heavy vibration and more.

 

Communication systems for use in military operations are exposed to similar harsh conditions. Many of the voice, video and data systems used by the military are mobile and designed for rapid deployment where similar temperature, extreme shock, vibration, dust and moisture environments are prevalent. Other potential hazards encountered in these applications include heavy electromagnetic interference (EMI) and radio frequency interference (RFI), which also create connectivity problems in these environments.

 

If you’re building or managing networks in harsh environments and want to know more about the products created specifically to withstand and perform in these settings, we’re here to help. We’ve created a video to explain more about L-com’s ruggedized product solutions and the applications they’re used in. Check it out here.

 

Antenna Downtilt: A Practical Overview

June 13, 2019 at 8:00 AM

  

When managing cellular networks with multiple base stations, one of the toughest challenges for operators is mitigating inter-cell interference. As 5G implementation ramps up, this will become increasingly important as service providers look to strengthen networks to increase capacity.

 

To successfully densify, base stations must be able to reuse frequencies within their cellular clusters. This means that operators will need to have firm control over the radiation pattern of each antenna, as radiation sprawl will result in electromagnetic interference and poor quality communications.

 

One of the best ways to stop radiation sprawl is downtilt – a process that directs the antenna’s vertical pattern towards the ground. Downtilt can be accomplished by using these two methods:

 

Mechanical Downtilt:

This is the fastest and easiest way to control an antenna’s pattern. It involves physically adjusting the pole-mounting brackets of an antenna by using a digital level against the back of the antenna for an accurate measurement. The downside of this method is that it will create an effect called pattern blooming, which reduces the signal more at bore sight and less at angles away from bore sight.

 

Electrical Downtilt:

Another way to change an antenna’s radiation pattern is by introducing an electrical phase taper inside of a sector antenna array. Electrical downtilt allows for a uniform reduction in coverage, preventing pattern blooming from happening. There are three types of antennas electrical downtilt antennas: fixed, variable and manual. The values of fixed electrical downtilt antennas cannot be changed after design and factor in the antenna’s elevation beamwidth along with other deployment dynamics. Antennas with variable electrical downtilt can be changed remotely. Manual electrical downtilt antennas are set with a tuning knob during installation, or they can be adjusted by a second tower climb if needed. While electrical downtilt prevents pattern blooming, variable and manual electrical downtilt antennas are usually more expensive and reduce antenna gain.

 

To check out our extensive line of antennas, click here.

 

M12 Connector Coding Demystified

May 30, 2019 at 8:00 AM

 

When you need to ensure that you have a reliable connection, even in the harshest conditions, you need an M12 connector. These rugged connectors are ideal for maintaining connections in the world of industrial automation and in any application where the environment or conditions can be a challenge. But do you know how to interpret the coding of an M12 connector? If not, you’re in luck, we’re here to help.

 

First, let’s take a look at the structure of an M12 connector. These circular connectors have a 12 mm locking thread that is typically IP-rated and provides protection from liquids and solids. Inside, there are pins in configurations of either 3, 4, 5, 8 or 12.

 

Different pin configurations are used for different applications. For example, 3 and 4-pin versions are used for sensors and in power applications, 4 and 8-pin models are used in Ethernet and PROFINET and 12-pin models are usually used for signal applications.

 

In addition to the varying pin configurations, M12 connectors are also coded. This coding prevents improper mating.

 

Here is a list of M12 codes and the applications they’re used in:

 

A-coded: sensors, DC power and 1 Gigabit Ethernet

B-coded: PROFIBUS

C-coded: AC power

D-coded: 100 Mbit Ethernet

K-coded: AC power

L-coded: PROFINET DC power

X-coded: 10 Gigabit Ethernet

S-coded: AC power (will be replacing C-coded power parts)

T-coded: DC power (will be replacing A-coded power parts)

 

Codes A, B, D and X are the most popular. A, B and D codes originated with the first M12 connectors, so they’ve been available the longest. The growth of the high-speed industrial Ethernet market has brought a surge of popularity for X-coded connectors, which are likely to eventually replace A, B and D codes in Ethernet applications.

 

There you have it, M12 codes de-coded. For all of your M12 connector needs, check out our website.

 

USB Active Optical Cables (AOC)

May 16, 2019 at 8:00 AM

 

USB has long been proven to be a dependable, flexible and simple-to-use interface that is a staple for a multitude of applications. Along the way, USB has adapted to offer a variety of formats to fit today’s technology needs. From power delivery to SuperSpeed USB 3.1 Gen 1 and Gen 2, USB has got you covered. Now the interface is taking things to another level with the introduction of USB 3.0 Active Optical Cables (AOC).

 

Active Optical Cable technology uses the same electrical inputs as traditional copper cabling, but with optical fiber between connectors. With electrical-to-optical conversion on the cable ends, AOC provides faster speeds and distance performance while also maintaining compatibility with standard electrical interfaces. Building upon the features of AOC, USB 3.0 AOC is made to be compliant with SuperSpeed USB electrical specifications, allowing for easy plug-and-play use and continuous operation between existing USB 3.0 hosts, hubs and devices.

 

These USB cables have an ultra-thin profile and much longer reach than a standard USB cable. In fact, they can reach speeds of 2.2 Gbps at over 100 meters. This allows for USB 3.0 AOC cables to be used in new and different ways USB might not have been able to before, such as with security cameras, industrial and medical machine control systems and in high-def surveillance applications. These cables are capable of speeds up to 5 Gbps, depending on the length of the cable. They also boast low power consumption and minimal EMI/RFI since fiber optic technology is being used.

 

Though USB 3.0 AOC is not backwards compatible, it won’t support older USB standards, there are many other features that make it worthwhile. Overall, USB 3.0 Active Optical Cables can be a great option if you have an application requiring USB connectivity over a long distance that traditional USB cables cannot meet.

 

To help you with your next high-speed, long distance USB application, check out our USB 3.0 AOC cables

 

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