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A121 EVK – User Guide
Picture 4. XC120 connected to XE121 and four XS121.
3.1.2
Power
The XC120 connector board is powered via USB (5V, 500mA). This 5V power domain powers the
complete A121 EVK (XC120+XE121+XS121). For some use cases (when attaching more than one
XS121 board to XE121 and running simultaneous radar measurements on them), more power may be
needed. An external power supply can then be connected via J3 (not mounted pin header on XC120).
As soon as 5V is available on J3, the current is automatically drawn from the external power supply.
When the power LED D1 is lit on XC120, the board is powered on and ready for use. Refer to Picture
1 for details on J3 and D1 placement.
11
Proprietary and Confidential
2022-07-07
© 2022 by Acconeer – All rights
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