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EVK-N3
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Users Guide
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Ublox EVK-N3 Users Guide

UBX-19004195 - R04 C1-Public www.u-blox.com
EVK-N3
SARA-N3 series cellular evaluation kits
User guide
EVK-N3 - User guide
UBX-19004195 - R04 Document information Page 2 of 17 C1-Public

Document information

Title
EVK-N3
Subtitle
SARA-N3 series cellular evaluation kits
Document type
User guide
Document number
UBX-19004195
Revision and date
R04
14-Oct-2020
Disclosure restriction
C1-Public
Product status
Corresponding content status
Functional sample
Draft
For functional testing. Revised and supplementary data will be published later.
In development / Prototype
Objective specification
Target values. Revised and supplementary data will be published later.
Engineering sample
Advance information
Data based on early testing. Revised and supplementary data will be published later.
Initial production
Early production information
Data from product verification. Revised and supplementary data may be published later.
Mass production / End of life
Production information
Document contains the final product specification.
This document applies to the following products:
Product name
Type number
Modem version
Application version
PCN reference
Product status
EVK-N300
EVK-N300-0-00
18.10
A01.04
UBX-20026729
Engineering sample
EVK-N310
EVK-N310-0-00
18.13
A01.00
UBX-20033555
Initial production
u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only permitted with the express written permission of u-blox. The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent documents, visit www.u-blox.com. Copyright © u-blox AG.
EVK-N3 - User guide
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Contents

Document information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Starting up ............................................................................................................................................... 4
1.1 EVK-N3 overview ......................................................................................................................................... 4
1.2 EVK-N3 block diagram ............................................................................................................................... 5
1.3 Switches, jumpers and buttons ............................................................................................................... 6
1.4 LEDs ............................................................................................................................................................... 7
1.5 Connectors ................................................................................................................................................... 7
1.6 EVK-N3 pin out ............................................................................................................................................ 8
1.7 Software installation .................................................................................................................................. 9
1.8 Board setup ................................................................................................................................................ 10
Appendix ........................................................................................................................................................ 12
A Setting up AT terminal applications for communication with EVK-N3 ............................ 12
B AT commands examples ................................................................................................................... 13
C Declaration of conformities.............................................................................................................. 13
D Current consumption measurement ............................................................................................. 14
E Glossary .................................................................................................................................................. 15
Related documents .................................................................................................................................... 16
Revision history ........................................................................................................................................... 16
Contact ........................................................................................................................................................... 17
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1 Starting up

1.1 EVK-N3 overview

The EVK-N3 evaluation kits are powerful and easy-to-use tools that simplify the evaluation of u-blox SARA-N3 series Narrow Band Internet of Things (NB-IoT) modules.
The following evaluation kits are available with u-blox SARA-N3 cellular modules:
• EVK-N300 evaluation kit is for evaluation of SARA-N300
• EVK-N310 evaluation kit is for evaluation of SARA-N310
The evaluation kits EVK-N300 and EVK-N310 are herein identified as EVK-N3.
SIM card holder
J300
Cellular reset
SW303
Cellular power-on
SW302
GND
9 – 18 V
Power input
J400
Cellular adapter
board
DL400
Main power switch
SW400
DL401
SARA-N3
cellular module
DIL B2B connector
J101
DIL B2B connector
J102
GND
GNSS
antenna connector
J103
GNSS module
GNSS
adapter board
Cellular VCC supply jumper
J404
Cellular USB
(UART / UART AUX)
J501
Cellular RS232
(UART)
J500
DL501
DL403
DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
Headset jack
J303
DS132
DS118
DS124
DS121
DS107 DS105 DS109 DS103
DS500 DS501
GND
GND
Cellular antenna connector
(ANT) J106
DS101
SW510
DL503
GDI voltage
selection
jumper
J105
Cellular VCC supply jumper
J155
Figure 1: Overview of EVK-N3 evaluation kit for SARA-N3 modules
☞ See the SARA-N3 series data sheet [2] and the SARA-N2/N3 series system integration manual [3]
for the detailed description of the characteristics and the features supported by SARA-N3 series.
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1.2 EVK-N3 block diagram

Figure 2 shows the main interfaces and internal connections of the EVK-N3 evaluation kit:
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
ADP-N3
SARA-N3
module
42-pin DIL Board-to-Board connector
(J101)
42-pin DIL Board-to-Board connector
(J102)
EVB-WL3
GNSS
module
GNSS adapter board
RF
USB
UART / UART FT
converter
Cellular USB
(UART / UART FT)
(J501)
Cellular RS232
(UART) (J500)
RS232
UART
converter
UART
MiniUSB/DB9
switch
(SW403)
On-board/B2B
switch
(SW401)
USB
Headset jack
(J303)
I2C
ANT NB
(J106)
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
UART FT
UART FT switch
(SW510)
SARA-N3 adapter board
ADP-GNSS
GPIO2/3/4
GNSS switch
(SW304)
GDI voltage selection jumper (J105)
VCC jumper
(J155)
Figure 2: Block diagram of EVK-N3 for SARA-N3 series modules
The EVK-N3 evaluation kit is formed by three boards:
• The lower one, called EVB-WL3, contains the power supply and other peripherals for the SARA-N3
series cellular module (such as SIM card holder, reset button and power-on button).
• The cellular adapter board, called ADP-N3, contains the SARA-N3 cellular module, the cellular
antenna connector, a 3-pin header with jumper for the digital I/O interfaces (GDI) voltage selection, a 2-pin header with jumper for VCC and current consumption measurement, and the DIL connectors (J101 and J102).
• The GNSS adapter board, called ADP-GNSS, contains the u-blox GNSS module, the GNSS antenna
connector and the USB connector for the GNSS module.
The boards are connected by means of male header board-to-board connectors provided on the bottom of the adapter boards and their corresponding female connectors provided on top of the lower board.
The SARA-N3 series pins are available on the dual in-line male board-to-board connectors provided on the top layer of the cellular adapter board (J101 and J102), which are pin-to-pin compatible to the connectors on the bottom layer of the adapter board EVB-WL3.
Communication with the SARA-N3 series cellular module is provided through the Cellular RS232 DB9 connector (J500) or the Cellular USB Mini-USB connector (J501), available on the EVB-WL3 board. The UART interface of the SARA-N3 series cellular module is routed up to both the connectors - J500 and J501. The Mini-USB / DB9 slide switch (SW403) must be set according to the selected connector. The Cellular USB Mini-USB connector (J501) provides also access to the additional UART interface for firmware upgrade and tracing of the SARA-N3 series cellular module (see section 1.8).
The lower board (EVB-WL3) is designed also to be used with other u-blox cellular adapter boards. It contains additional switches, jumpers, connectors, LEDs and parts that may be partially described in
Figure 1 or in this document, because they are intended for use only with other u-blox cellular modules.
It is recommended to leave any additional connector unconnected and any additional switch in its default configuration.
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1.3 Switches, jumpers and buttons

Function
Description
Name
Board
Main power switch
Power on / off of the whole evaluation kit
SW400
EVB-WL3
Cellular VCC jumper
Jumper socket to provide the 3.8 V supply to the cellular module VCC input
J404
EVB-WL3
J155
ADP-N3
Cellular power-on
Push button to switch on the cellular module
SW302
EVB-WL3
Cellular reset
Push button to reset the cellular module
SW303
EVB-WL3
Cellular UART detach
Slide switch to attach / detach the cellular module UART from USB / RS232 connectors: when detached, UART signals are available only on DIL B2B connectors on ADP board
SW401
EVB-WL3 Cellular UART routing
Slide switch to select the cellular module UART routing on USB or on RS232 connector
SW403
EVB-WL3
Cellular UART FT detach
Slide switch to attach / detach the cellular module UART FT from USB connector: when detached, the UART FT signals are available only on the DIL B2B connector on ADP board
SW510
EVB-WL3
Cellular GPIO detach
Slide switch to attach / detach the cellular module GPIOs from peripherals: when detached, the signals are available only on the DIL B2B connectors on ADP board
SW300
EVB-WL3
Cellular GNSS detach
Slide switch to attach / detach the cellular module to the GNSS module (GPIO2-3-4): when detached, the signals are available only on DIL B2B connector on ADP board
SW304
EVB-WL3 GNSS V_BCKP
Slide switch to connect / disconnect backup battery to V_BCKP pin of the GNSS module
SW204
EVB-WL3
Cellular GDI voltage selection Jumper
3-pin header with jumper to select operating voltage for cellular Generic Digital I/O Interfaces: ‘L’ = 1.8 V / ‘F’ = 2.8 V
J105
ADP-N3
Table 1: Description of EVK-N3 switch, jumpers and buttons
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