Q. What is GPS?

A. The Global Positioning System, usually called GPS, is the only fully-unctional satellite navigation system.  A constellation of more than two dozen GPS satellites broadcasts precise timing ignals by radio, allowing any GPS receiver to accurately determine its location (longitude, latitude, and altitude) in any weather, day or night, anywhere on Earth.

GPS has become a vital global utility, indispensable for modern navigation on land, sea, and air around the world, as well as an important tool for map-making and land surveying. GPS also provides an extremely precise time reference, required for telecommunications and some scientific research, including the study of earthquakes. GPS receivers can also gauge altitude and speed with a very high degree of accuracy.

Q. What is GPS tracking/ Navigation?

A. Navigation is a device that allows the driver to see where they are. GPS tracking is a technology that allows companies to supervise their employees and vehicles ensuring that they are more productive and efficient. GPS tracking is the electronic equivalent of having a supervisor driving with the employee all day long.

Q. Why do we need GPS Tracking?

A. For the same reason a shop has a foreman, an office has an office manager a factory has supervisor. If a company’s revenue is produced by a driver in a vehicle performing a service it would make sense to use GPS tracking to help them be more efficient. Using a Fleet Management System properly reduces costs and improves productivity. When implemented correctly the use of GPS tracking more than pays for itself.

Q. What is the benefit with GPS Tracking System?

A. Save Money. Save Time. Increase Profits.

Running your business can be a challenge. Managing drivers, vehicles, equipment and assets adds frustration and confusion into your already packed schedule.GPS tracking can offer you relief while improving customer service, optimizing driver routing, reducing idling costs and much more.

Q. Does my GPS Device need a SIM card?

A. Yes,think of your GPS Device as another phone. You insert a SIM card and that phone number is who you send your text  messages to.

Q. What affects GPS accuracy?

A. Many factors affect how accurate your GPS is. The atmosphere, the ionosphere and the position of your receiver could  all affect GPS accuracy. Any buildings, natural structures or heavy foliage that obstructs the GPS' view of the sky may decrease the position accuracy.

Q. Notes on choosing a switching power supply?

A. a). To increase the reliability of the S.P.S., we suggest users choose a unit that has a rating of 30% more power than actual need. For example, if the system needs a 100W source, we suggest that users choose a S.P.S. with 130W of output power or more. By doing this, you can effectively boost the reliability of the S.P.S. in your system.

  b). We also need to consider about ambient temperature of the S.P.S. and whether there is additional device for dissipating the heat. If the S.P.S. is working in a high temperature environment, we need to make some derating to the output power. The derating curve of "ambient temperature" versus "output power" can be found on our spec sheets.

  c). Choosing functions based on your application:

       *Protection function: Over Voltage Protection (OVP), Over Temperature Protection (OVP), Over Load Protection (OLP), and etc.

      *Application function: Signaling Function (Power Good, Power Fail), Remote Control, Remote Sensing, and etc.

       *Special function: Power Factor Correction (PFC), Uninterruptible Power Supply (UPS) function.

  d). Make sure that the model qualifies for the safety standards and EMC regulations you need.

Q. What is PFC?

A. PFC stands for Power Factor Correction. The purpose of PFC is to improve the ratio of apparent power and real power. The power factor is only 0.4~0.6 in non-PFC models. In PFC models, the power factor can reach above 0.95. The calculation formulas are as below:

Apparent Power=Input Voltage x Input Current (VA)

Real Power= Input Voltage x Input Current x Power Factor (W)

From the environment friendly point, the electric power plant needs to generate a power which is higher than apparent power in order to steadily provide electricity to the market. The real usage of electricity should be defined by real power. Assuming the power factor is 0.5, the power plant needs to produce more than 2VA to satisfy 1W real power. On the contrary, if the power factor is 0.95, the power plant only needs to generate more than 1.06VA to provide 1W real power need. It will be more effective.