Monthly Archives: October 2017

How To Prevent Robberies During a Trip

How To Prevent Robberies During a Trip

Being prepared to prevent the frequent thefts that occur during a trip to “distant lands” should be part of the usual preparation, next to the arming of the bags, the farewells and the adrenaline logic of the case.

Faced with this imminent danger of being the victim of a robbery, it is advisable not to carry unnecessary documentation, as well as make two sets of photocopies with the main page of the passport, passages, credit cards and other documentation that is carried.

To leave a game at home of friends or relatives before leaving and to take the other one in place other than the originals, is a basic measure to avoid unnecessary complications. Using traveler’s checks or credit cards before cash, taking note of the spending limit of the cards, and the telephone number to contact in case of loss in the destination country, are other recommendations that are made in these cases.

A good method to avoid crime is to use secret pockets, to distribute the money and valuables in several places not to lose everything in case of being the victim of an assault.

Carry light luggage, because heavy and large luggage makes us slower and more vulnerable. Do not use flashy or expensive luggage, and carry valuables in carry-on luggage. At destination, leave them in the hotel safe.

Reduce the signs that one is a tourist. Do not forget to put cards with personal information on all pieces of luggage. Prefer cards with cover that conceal the information at first glance. And always have a map of the city to which you are traveling, once in it, consult the map systematically before moving, to be safe in your movements.

For people who wear glasses, bring a spare pair, but during the trip put them in the carry-on luggage. Also, if you are taking medicines, put them in your carry-on luggage, and to avoid customs problems, keep them in the original container.

In such cases, it is always necessary to keep a copy of the generic prescriptions and names of the drugs. And even if you have psychiatric prescription, take a note from the doctor certifying the need to receive them.

It is also important not to let yourself be helped if your clothes are spotted on the street or other public places. This helps prevent the trick of dyeing, very common in Europe: a person causes a stain on the clothing, then try to help it and in the resulting confusion commit the robbery. It is important to refuse in a firm but cordial way, without losing your serenity.

How Does an Optical Transceiver Work in Computer Networking?

How Does an Optical Transceiver Work in Computer Networking?

In this developed world, fiber optic uses are becoming more useful and helpful for the computer networking experts. Usually, when you go through the basic definition of an Optical Transceiver, then you will come to know it is a device that receives as well as sends the messages in form of impulses and light beams. Actually, the fiber optic transceiver is a faster, better and more convenient technology that boosts up the performance of computer networking. If you are using an electric wire, then you will experience many problems and challenges in transmitting the data from one system to the other via computer network. It is important for you to be familiar with exact working of a fiber optic transceiver.

Signal Conversion Process:

Generally, there are several famous types, standards and interfaces of the fiber optic transceiver. So, you need to choose the best one that can meet your official requirements as per your expectations. Anyways, an optical transceiver receives the data in form of electric signals and then converts it into the optical signals via a fiber optical cable. This process is called as the signal conversion phenomenon that appreciates the computer networking via fiber optic technology.

Fiber Optical Cable:

This is an advanced cable with fiber optical features and specs. Usually, this cable is more efficient and high performance with compared to an electric cable that receives and sends only electrical signals. Fiber cable generally has a core diameter up to 8 micrometer, while it uses the light impulses for transmitting information from one system to the other. The signals in this cable will have a high bandwidth.

Performance Parameters:

The fiber optic transceiver always has some performance parameters which you must be familiar with before to use this cable. Initially, these parameters will be sensitivity, responsivity and time rise of the receiver. All these parameters explain the performance and working of a transceiver. This performance matters a lot in computer networking, especially when you need to transmit the important data safely and quickly.

Performance Specification:

Usually, a transceiver has specific performance specification that declares the effectiveness and major goals of this technology. There are some very useful and core specifications of a transceiver including;

  • Spectral width
  • Source of light
  • Rise time of a transmitter
  • Maximum output power of the optical etc.

Transceiver Light Source:

There are two light source options for the computer networking experts. In general, you can choose either LED or Laser Diode as the basic source of light. However, LED light source does not provide expected outcomes, while Laser Diode is a better and more reliable option that is also extremely powerful. It is the best one for longer distances with a sustainable performance and efficiency. That is why; Laser Diode is being used as the source of light in fiber optic transceivers.

Computer Data Conversion:

It is the final stage where the computer data is converted from provided mode to a desired form. This conversion will take place between Ethernet and optical networks. There are also many essential components that will speed up the data conversion process.