User's Manual

Regulatory Support
A DIVISION OF TRIMBLE
70 Functionality of the ThingMagic Nano
Sets the PLL Frequency Setting to the first entry in the hop table, even if the RF is off.
Selects the transmit filter, if applicable.
Frequency Setting
The modules have a PLL synthesizer that sets the modulation frequency to the desired
value. Whenever the frequency is changed, the module must first power off the
modulation, change the frequency, and then turn on the modulation again. Since this can
take several milliseconds, it is possible that tags are powered off during a frequency hop.
In addition to setting the default regional settings, the ThingMagic Nano has commands
that allow the transmit frequency to be set manually.
Frequency Units
All frequencies in the ThingMagic Nano are expressed in kHz using unsigned 32-bit
integers. For instance, a carrier frequency of 918 MHz is expressed as 918000 kHz.
The PLL is set automatically to the closest frequency - based on the minimum frequency
quantization for the current region - that matches the specified value. The ThingMagic
Nano has an absolute minimum quantization of 100 kHz. Each region also has a
minimum quantization based on regulatory specifications, which may be greater. The
following table details the frequency quantization in kHz for each region setting.
CAUTION!
!
!
Use these commands with extreme caution.
It is possible to change the module’s com-
pliance with the regional regulations.