ST ST25RU3993, Руководство пользователя

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UM2268 Rev 6 37/68
UM2268 Reader Settings
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4.1.2 Frequency selection panel
•
Reference divider : Frequency reference divider used by the internal PLL. This value
defines the smallest frequency step of the RF carrier:
–
25 kHz
– 50 kHz
– 100 kHz
•
Profile : Defines the region-specific frequency profile to be used by the reader.
– Europe : Defines 4 frequency channels ranging from 865.700 MHz to
867.500 MHz with a frequency step of 600 kHz.
– USA : Set the 50 frequencies from 902.750 MHz to 927.250 MHz with a frequency
step of 500 kHz.
– Japan : Set the 9 frequencies from 920.500 MHz to 922.100 MHz with a frequency
step of 200 kHz.
– China lower band : Set the 16 frequencies from 840.625 MHz to 844.375 MHz
with a frequency step of 250 kHz.
– China upper band : Set the 16 frequencies from 920.625 MHz to 924.375 MHz
with a frequency step of 250 kHz.
Figure 34. Frequency panel
– Configure Custom profile : Allows to configure the custom frequency profiles by
opening the “Channel list” dialog.