What Is The Difference Between Half-Duplex (HDX) And Full-Duplex (FDX-B)

Writer： admin Time：2019-09-18 03:19:51 Browse：85℃

The main difference between HDX and FDX animal RFID readers lies in the way they transmit data and the frequency at which they operate. 

HDX (Half Duplex) readers operate at a frequency of 134.2 kHz. They use a unique identification number assigned to each tag and transmit this number in a one-way communication, meaning that the reader only sends data to the tag and does not receive any response from the tag. 

On the other hand, FDX (Full Duplex) readers also operate at a frequency of 134.2 kHz. However, they use a two-way communication method. FDX readers send information to the tag and receive a response from the tag containing the unique identification number. This allows for two-way data exchange between the reader and the tag.

 In summary, the main difference between HDX and FDX animal RFID readers is the communication method. HDX operates as a one-way communication, while FDX operates as a two-way communication, enabling bi-directional data exchange between the reader and the tag.

        Ear tags are available in “Half-Duplex” (HDX) and “Full-Duplex” (FDX). These technologies respect ISO 11784 and ISO 11785 standards. The transponder conception and the reading distance performances of HDX and FDX electronic ear tags are different.

HDX EAR TAG

HDX technology is based on an asynchrony exchange. The transmission signal of HDX ear tags are more powerful, allowing to have a higher distance of reading.

ELECTRONIC EAR TAG

FDX technology is based on a synchrony exchange. The FDX electronic ear tags offer standard performances against HDX, but their initial cost is lower.