ThingMagic Mercury6e M6e-30dBm, Руководство по оборудованию

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Regulatory Support
Functionality of the Mercury6e
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Frequency Units
All frequencies in the M6e are expressed in kHz using unsigned 32-bit integers. For
instance, a carrier frequency of 915 MHz is expressed as 915000 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 M6e has an
absolute minimum quantization of 50 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.
Regional Frequency Quantization
When manually setting frequencies the module will round down for any value that is not
an even multiple of the supported frequency quantization.
For example
: In the NA region, setting a frequency of 902,999 kHz results in a
setting of 902,750 kHz.
When setting the frequency of the module, any frequencies outside of the valid range for
the specified region are rejected.
Frequency Hop Table
The frequency hop table determines the frequencies used by the M6e when transmitting.
The hop table characteristics are:
Contains up to 62 slots.
Valid frequencies for the region currently selected.
Changes not stored in flash, thus changes made are not retained after a power cycle
or a restart of the boot loader.
Inability to change individual entries after uploading without reloading the entire table.
Frequencies used in the order of entries in the table.
If necessary for a region, the hop table can be randomized to create a pseudo-random
sequence of frequencies to use. This is done automatically using the default hop tables
provided for each region.
Region
Frequency
Quantization
Minimum
Frequency
Maximum
Frequency
NA 250 kHz 902,000 kHz 928,000 kHz