u-blox SARA-N3 Series, Руководство пользователя

Страница: 10 / 18

EVK-N3 - User guide
UBX-19004195 - R06 Starting up Page 10 of 17
C1-Public
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-N3 (ANT NB, 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-N3 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 J155 on the ADP-N3). These jumpers provide the connection from the 3.8 V 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. LED DL400 lights green.
7. To switch on the cellular module, press the Cellular power-on button (SW302 on EVB).
8. For communication via UART interface of the cellular module, the following connections are
allowed and can be alternatively enabled in a mutually exclusive way (see
Table 6 for slide
switches positions and LED status):
8.1. 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):
▪
SARA-N3 UART interface is available over the first COM port (for AT commands and
data)
▪
SARA-N3 additional UART FT interface is available over the second COM port (for FW
update and diagnostic)
8.2. 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 FT) 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 FT) and RS232 (UART) connectors B2B Do not care DL404
Table 6: Serial interface configuration