
WIRELESS CONNECTIVITY & SENSORS
Evaluation board user manual
CON3
nRF52840
Function
1
GND
2
P0.09
NFC1
3
P0.10
NFC2
4
GND
3.3.4 CON4
Connector CON4 (SMA receptacle) is used to connect an external antenna. The 2.4GHz
antenna Himalia-2600130021 shall be used.
CON4
Function
Inner
RF signal
Outer
GND
The board supports 50
Ω
connection by just soldering/unsoldering one component to use either
module’s internal PCB antenna or to connect an external antenna.
In order to use the external antenna for long range tests, Capacitor C6 has
to be populated with a 22pF capacitor
and C28 should be left
unpopulated.
Figure 5: Capacitor connection to external antenna
In order to use the internal PCB antenna of the module, C28 has to be popu-
lated with a 22pF capacitor
and C6 should be left unpopulated.
3.3.5 CON5
Connector CON5 is used to connect the WE Sensor evaluation boards. This feature is sub-
jected to a customized firmware and not supported by default firmware.
Thyone-I, Proteus-III(-SPI), Setebos-I
14
Version 1.5, May 2023