Allflex AFX-100 Manual do Utilizador descarregar pdf (Página 13)

Rev Australasia V2.3 12/04

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Antenna mounted on ply

When you do mount a reader onto the steel pipe work of a crush etc, you will find the

antenna transmits energy into the pipe work. What often happens is that the crush actually

starts acting like an extension to the antenna. This is called the Parasitic Effect. For

example, if you mount an antenna close to the front of a crush, (head bail end) you may

notice that tags read outside the normal read range when they come close to steel pipes

positioned at the entry to the crush (as shown below).

Usually, this parasitic effect is really helpful because it means that the animal is detected

very quickly as it enters the crush or drafting crate, however, it may also mean that the

system is very fast to read animals that follow closely the animal in the crush (IE if a

second animal places it’s head in beside the first beast, you may read the first animal and

then the second, with the second animal being displayed on your computer or scale head).

You need to understand how to deal with this situation if it occurs and how it affects the

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Allflex AFX-100 Manual do Utilizador Página 13