Null modem, also called crossover, is a term associated with serial (RS-232) cables. A standard serial cable, also called an AT cable, has the wires inside the cable running straight through. Take a DB9 cable as an example. Pin 1 on one end of the cable would be connected to Pin 1 on the other end. Then Pin 2 to 2, 3 to 3, and so on. Null modem cables are serial cables that use an alternative pinout for different functionality.
NEMA and IEC are the two most common standards for power cords used in North America. NEMA connectors are on the side of the power cord that plugs into an AC wall outlet. IEC connectors are the side that plugs into devices like computers or TVs. By and large, NEMA and IEC are compatible with each other. There are many similarities between NEMA and IEC standards, but they are not quite the same.
NEMA is an
Cables are the backbone of most modern technology. From simple ethernet cables keeping office computers online to heavy-duty power cables running hospital equipment, cables are involved with every aspect of technology. Even wireless devices like cell phones and tablets can only work by connecting to other devices like modems and routers that use cables themselves.
With cables being so critical, it is important to think economically when making purchases. However, once prices get too low it should set off a red flag. If something seems too good to be true, it usually is. Where cables are concerned, that can mean counterfeit cables that do not meet industry standards. These cables are unsafe and can damage themselves, the equipment they are connected to, and people unfortunate enough to be handling them.
Identifying Counterfeit Cables
In North America and Japan, special power cords are required for use with any equipment in a hospital or medical setting. Some other countries such as Australia, New Zealand, and Denmark use similar recommendations, but they are not technically required by law. This article will focus on power cords required for medical equipment in North America, most notably the United States and Canada.
In Technical Terms
- UL 60601-1 and CAN/CSA C22.2 no. 21 (medical equipment st
Ensuring an organized workspace and knowing the functions provided by a specific colored cable are critically important in any electrical setting. Putting the effort into planning out cable management ahead of time is always a good idea. A neat, organized structure makes it much easier to find the cable you are looking for whenever something needs to be unplugged or when trying to simplify knowing which cables perform what operations. Color coding your power cords can ease a complex situation and help you keep your peace of mind when trying to figure out a problem.
In the age of the Internet, it is easier than ever before to be a thrifty shopper and find a bargain. When shopping around for any product, after a while you start to get a sense of what kind of price that particular item usually goes for. But as you dig around the Internet a bit more, you may stumble across an even better price. One that blows those other prices away. Something that seems too good to be true. And as the old saying goes: if something seems too good to be true, it probably is.
A power cord may seem simple at a glance, but there is a lot that goes into making one. A proper power cable is made of various materials in a specific fashion according to industry and government standards. However, there are many websites online that sell cables cheaply because their products do not meet those regulations. Sub-par cables are likely to burn out (literally as well as figuratively) quickly and can
Power cords, simply put, can be dangerous. Now when you think of the word “dangerous”, a power cord is probably not the first image that jumps into your head. And granted, a regular power cord is not as dangerous as something like a high voltage line at a substation. But while you may not need to be a licensed electrician to plug something into a wall outlet, it is important to remember that accidents do happen.
According to the U.S. Consumer Product Safety Commission (CPSC), roughl
Product certifications are as important for cabling as for any other industry. No one wants to run the risk of winding up with sub-par products that do not work or, worse, cause damage to other devices (or people). With so many different certifications spread across just as many different industries, it can be hard to keep them straight. For cables, there are a few key certifications to keep an eye out for:
- Prop 65
Each of these certifications has different definitions covered below. Some or even all of them may not apply to an item depending on what kind of item is in question. For example, certifications for an ethernet cable will not be the same as ones for a patch panel. Other c
So, you need a new power cord. Maybe the old cord for your TV got lost when you were moving, or that new computer did not have a power cord in the box when you opened it. For whatever the reason, you need something to make that power button light up when you push it.
There are different types of power cords out there so step one will be determining which kind you will need. But even after you narrow that down, there are still other factors to take into consideration. The first cord you find may be able to do the job, but it is important to make sure the job is done right.
SAINT LOUIS, Missouri, Mar. 4, 2019 – ShowMeCables, an Infinite Electronics brand and leading supplier of connectivity solutions, is proud to announce their new line of power cords. Consisting of over 300 different types of NEMA, IEC, international, hospital grade and angled cords, this new line ensures that ShowMeCables will continue to serve the power demands for IT, Data Center and OEM markets. Readily available power cords include lengths from 1-25 feet, multiple colors, plug orientations, and wire gauges.
ShowMeCables’ manufacturing process emphasi