User's Manual

Antenna Port
A DIVISION OF TRIMBLE
78 Functionality of the ThingMagic Nano
GPIO 1 & 2 Used for Antenna Switching
If only one GPIO Output line is used for antenna control, the combinations of the available
output control line states (the GPIO line in use and the module port) result in a subset of
logical antenna settings which can be used.
ONLY GPIO 1 Used for Antenna Switching
Note
The “missing” logical antenna settings are still usable when only one GPIO
line is used for antenna control and simply results in redundant logical
antenna settings. For example, using only GPIO 1, logical setting 1 and 3
both result from GPIO1=Low.
ONLY GPIO 2 Used for Antenna Switching
GPIO
Output 1
State
GPIO
Output 2
State
Logical Antenna
Setting
Low Low 1
Low High 2
High Low 3
High High 4
GPIO
Output 1
State
Logical Antenna
Setting
Low 1 or 2
High 3 or 4
GPIO
Output 2
State
Logical Antenna
Setting
Low 1 or 3
High 2 or 4