The Development of the Radio-Frequency Technology

Whether the radio-frequency (RF) antenna is well or not, the best way is to check its detecting distance. To increase the stability of equipments we have to reduce the detecting distance properly, but many contractors didn’t consider this. They always set the distance as far as possible, once the spot electric field changed a bit, it may have influence on detecting distance especially PCB3000 which will change with the electric field interference, when it get larger the limit number will increase automatically and the relative sensitivity will get lower, if one of the three indicators is on it means the relative sensitivity has reduced 10% automatically, if two indicators are on, it means the relative sensitivity has reduced 30% automatically, and if three indicators are on, it means the relative sensitivity has reduced 60% automatically, so experienced contractors would leave over 30% remainder when setting the systems, they would never set system as the maximum top or it will increase workload largely.
The blind spot will always exist in RF antennae theoretically. The blind spot exists in the middle area of the level direction of normal tags & labels in two-pole (3-ring) antennae, or it has the lowest receiving signal value there; the blind spot exists in the middle area of the vertical direction of normal tags & labels in single-pole (2-ring) antennae, or it has the lowest receiving signal value there; if we use two kinds of antennae alternately to do the “electronic circumrotation” work, we can make up the defects resulted from blind spot or lower signal receiving. Thus almost all the 4*4 soft labels could reach the 1.6m detecting distance easily in the new designs.
With the continuously upgrade and development of CPU speed, all the new type of antennae are designed as one main control unit controls many systems. The present processing speed of DSP could be competent for working with 4 groups of antennae, which makes the single-pole antenna simply with only data collection mission, so its appearance could become prettier and it could be covered better.
With the high-speed development of Internet, online debugging and technically processing are convenient. Each system has a fixed IP address, if only we put the fixed IP addresses on record, it would make the latter service easier. Whenever and wherever the systems go wrong, we could deal with them online. If the problems are too difficult to solve, we just need to give the IP address to the senior maintainers.
EAS technology has been promoted to a brand-new height, and many topics have become the truths that we could only talk about before.
With the development of EAS systems, many nonprofessional people took part in this field because of the high profits which must be the wrong guide to let many people produce EAS equipments who do not know EAS very clearly. Large range of production could make the products cheaper but meanwhile manufacture in a rough way. Many distributors can not distinguish the different quality products and they always buy the cheaper ones. So the EAS market is in such a mess.
Direct distributors must think about that it is necessary to own a better service for the burglarproof products. It is necessary for the companies to own some professional people to service the customers so the service costs. If all the equipments are free, what kind of price we should offer to our terminal users?
Producers must consider that you could not be proud of the selling rate because one unqualified product will make you lose a loyal distributor who lost a terminal user because of this. The bad quality products make unsolvable troubles. Producers should be strict with each one of their products and their distributors