EVK-N2 - User guide
UBX-17005115 - R05
Starting up
Page 11 of 18
1.8
Board setup
1.
Insert a SIM card into the SIM card holder (J300 on the EVB).
2.
Connect a cellular antenna (provided with the evaluation kit) to the Cellular antenna SMA
connector on the ADP-N2 (ANT, RF input/output for transmission and reception of NB-IoT RF
signals)
3.
If the GNSS functionality is required, connect the GNSS antenna provided with the evaluation kit
to the GNSS antenna SMA connector on the ADP-GNSS. Place the GNSS antenna in a location
with a good view of the sky.
☞
Interface to the GNSS module is not supported by SARA-N2 series modules.
4.
Connect the AC / DC +12 V power adapter provided with the evaluation kit to 9 – 18 V Power Input
connector (J400 on the EVB). LED DL401 lights blue.
5.
Be sure to provide a jumper socket on both the Cellular VCC supply jumpers (J404 on the EVB,
and J103 on the ADP-N2). These jumpers provide the connection from the output of the supply
circuit on the EVB board to the VCC input of the module.
6.
To enable the board power supply, turn the Main power switch (SW400 on the EVB) to the ON
position. LEDs DL400 and DS147 light green. The cellular module switches on.
7.
For communication via the cellular module’s UART interface, the following connections are allowed
and can be alternatively enabled in a mutually exclusive way (see
positions and LED status):
a.
Connect a USB cable to mini USB connector (Cellular USB, J501 on EVB), LED DL501 lights
blue.
In this case, two COM ports are enabled with Windows (the numbering of the COM ports can
be seen via the Windows Device Manager):
o
SARA UART interface is available over the first COM port (for AT commands and data)
o
SARA secondary / auxiliary UART interface is available over the second COM port (for
diagnostic)
b.
Connect an RS232 cable to DB9 connector (Cellular RS232, J500 on EVB)
Type of connections
SW401
SW403
LED
Access to cellular UART over the Cellular USB (UART / UART AUX) mini USB
connector (J501)
ON BOARD MINIUSB
DL403
Access to cellular UART over the Cellular RS232 (UART) DB9 connector (J500) ON BOARD DB9
DL405
Access to cellular UART on DIL Board-to-Board connector on the adapter board:
cellular UART detached from USB (UART / UART AUX) and RS232 (UART)
connectors
B2B
Do not care DL404
Table 6: Serial interface configuration
Then, beside the specific serial connector used (case a or case b), run an AT terminal application
(as for example the u-blox m-center tool) selecting the appropriate AT COM port with these
settings:
o
Data rate: 9600 bit/s
o
Data bits: 8
o
Parity: N
o
Stop bits: 1
o
Flow control: None
