UBX-21008123 - R02
Setting up the evaluation board
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Setting up the evaluation board
As introduced in
Overview
section, EVK-ANNA-B4 boards are available for four variants that
accommodate alternative antenna and software solutions.
Setting up EVK-ANNA-B402 evaluation boards for the open CPU ANNA-B402 modules and EVK-
ANNA-B412 evaluation boards for ANNA-B412 modules with pre-flashed u-connectXpress require
different software and hardware prerequisites.
3.1
Software and hardware preparation
Before setting up EVK-ANNA-B402 and EVK-ANNA-B412 evaluation boards, some software and
hardware prerequisites are needed.
Installing software
•
EVK-ANNA-B402 evaluation boards only
J-Link drivers are needed for programming the open CPU ANNA-B402 modules. J-Link drivers are
usually automatically installed on a PC correctly when the evaluation boards are plugged in. If the
drivers are not installed automatically, download the J-Link driver included in the Nordic
and follow the procedure
Installing J-Link drivers
to install the J-Link drivers
needed for programming the open CPU ANNA-B402 modules. The drivers need only be installed
once when you connect the EVK to a new computer.
•
EVK-ANNA-B412 evaluation boards only
EVK-ANNA-B412 evaluation boards are pre-flashed with u-connectXpress software which enables
users to configure ANNA-B412 modules using AT commands with u-blox s-center evaluation
software. Follow the procedure Installing s-center evaluation software to install the u-blox s-center
evaluation software.
Connecting external antennas
3.1.2.1
2.4 GHz antenna
To evaluate the 2.4 GHz radio on the
EVK-ANNA-B402U and EVK-ANNA-B412U evaluation boards,
external antennas might be needed. Connect a 2.4 GHz antenna to the U.FL connector (J10) on the
ANNA-B402U or ANNA-B412U module if needed.
EVK-ANNA-B402C and EVK-ANNA-B412C board variants include internal antennas in the modules.
External antennas are therefore not needed for evaluating these board variants
3.1.2.2
NFC antenna
To use any of the EVK-ANNA-B4 board variants as an NFC tag, an NFC antenna can be connected to
the NFC antenna connector (J11) .
Power on evaluation board
Before powering on the evaluation boards, make sure that the power configuration jumpers are
connected according to your use cases, as described in
Powering options
. The default configuration
described in
Selecting the power configuration jumpers
works for most use cases.
Check the polarity of the EVK connector before connecting an external power supply to the EVK-
ANNA-B4 evaluation board. Center conductor is positive (+) and the ring is negative (-).
