BlueBerry UHF v.2.0 – User Manual ver. 0.6
June 2011
6
When BlueBerry is connected to the computer, the following situations related to the battery’s
charge level may occur:
•
an acoustic signal and a fixed blue LED: charged battery
•
an acoustic signal and blinking blue LED: battery charging. In this condition, it is possible
to operate with BlueBerry connecting to it with an any serial Terminal program or using the
applications provided with the CD (
TT_RFID_Configurator or TT_RFID_PCDemo
)
In Table 1, you can see the activities of the blue LED and of the acoustic beeper related to the
battery level.
Reading distance
BlueBerry is equipped with an integrated antenna, for the reading of TAG RFID, located above the
button as shown in Figure 1.
The ideal reading distance and condition for BlueBerry UHF is as follows.
NOTE
:
the reading distance varies based on the type of TAG. Also, metal objects and surfaces
located very near BlueBerry can notably invalidate the reader's performance.
BlueBerry UHF reader supports the EPC Class 1 Gen 2 standard. The reading distance is 10-20 cm
for far field TAG RFID and of maximum 2cm with TAG near field.
The optimal conditions of reading are obtained positioning the TAG inside the field pointed out in
Figure 2 (the figure is for example purpose only and doesn't represent the real antenna radiation
pattern).
Figura 2: read field of BlueBerry UHF
Содержание BlueBerry UHF
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