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UBX-16029216 - R06
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EVK-R4
SARA-R4 series cellular evaluation kits
User guide
Abstract
This guide explains how to set up the EVK-R4 evaluation kits to begin evaluating the u-blox SARA-R4
series cellular modules supporting multi-band LTE Cat M1 / NB1 radio access technology.
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EVK-R4 - User guide
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Document information
SARA-R4 series cellular evaluation kits
Corresponding content status
For functional testing. Revised and supplementary data will be published later.
In development /
Prototype
Target values. Revised and supplementary data will be published later.
Data based on early testing. Revised and supplementary data will be published later.
Early production information
Data from product verification. Revised and supplementary data may be published later.
Mass production /
End of life
Document contains the final product specification.
This document applies to the following products:
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.
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Contents
Document information ................................................................................................................................ 2
Contents .......................................................................................................................................................... 3
1 Starting up ............................................................................................................................................... 4
Appendix ....................................................................................................................................................... 16
A Setting up AT terminal applications for communication with the EVK-R4 .................... 16
B Setting up a cellular packet data connection on a Windows PC ......................................... 17
C Examples of AT commands ............................................................................................................. 22
D Current consumption measurement ............................................................................................ 24
E Glossary ................................................................................................................................................. 25
Declaration of conformities .................................................................................................................... 26
Related documentation ........................................................................................................................... 27
Revision history .......................................................................................................................................... 27
Contact .......................................................................................................................................................... 28
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1 Starting up
1.1 EVK-R4 overview
The EVK-R4 kit is a powerful and easy-to-use tool that simplifies the evaluation of the u-blox SARA-R4
series LTE Cat M1 / NB1 cellular modules.
The following evaluation kits are available with u-blox SARA-R4 cellular modules:
• The EVK-R404M evaluation kit is for evaluation of SARA-R404M modules
• The EVK-R410M evaluation kit is for evaluation of SARA-R410M modules, and more specifically:
o The EVK-R410M-01B evaluation kit is for the SARA-R410M-01B module product version
o The EVK-R410M-02B evaluation kit is for the SARA-R410M-02B module product version
o The EVK-R410M-52B evaluation kit is for the SARA-R410M-52B module product version
o The EVK-R410M-6 evaluation kit is for the SARA-R410M-63B module product version
o The EVK-R410M-7 evaluation kit is for the SARA-R410M-73B module product version
o The EVK-R410M-8 evaluation kit is for the SARA-R410M-83B module product version
• The EVK-R412M evaluation kit is for evaluation of SARA-R412M modules
All the evaluation kits are identified herein as the EVK-R4.
☞ See the SARA-R4 series data sheet [2] and the SARA-R4 series system integration manual [3] for
the features supported by the u-blox SARA-R4 series cellular modules.
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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-R4
Cellular module
DIL B2B connector
J101
DIL B2B connector
J102
GND
GNSS
J208
GNSS module
GNSS
adapter board
Cellular VCC
supply
jumper J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501DL403
DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
DS132
DS118DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
GND
Cellular
antenna connector
ANT1 - J106
BT200
Cellular native
USB J105
Headset jack
J303
DS102
Figure 1: Overview of the EVK-R404M evaluation kit for SARA-R404M modules
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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-R4
Cellular module
DIL B2B connector
J300
J301
GND
GNSS
antenna connector
J208
GNSS module
GNSS
adapter board
Cellular VCC
supply jumper
J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501DL403
DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
DS132
DS118DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
GND
Cellular
ANT1 - J103
BT200
Cellular native USB
J104
Headset jack
J303
DS100
Figure 2: Overview of the EVK-R410M evaluation kit for SARA-R410M modules
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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-R4
Cellular module
DIL B2B connector
J300
DIL B2B connector
J301
GND
GNSS
antenna connector
J208
GNSS module
GNSS
adapter board
Cellular VCC
supply jumper
J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501DL403
DL405
GNSS USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
DS132
DS118DS124
DS121
DS107
DS105
DS109
DS103
DS501
DS500
GND
GND
Cellular
ANT1 - J103
BT200
Cellular native USB
J104
Headset jack
J303
DS100
Figure 3: Overview of the EVK-R412M evaluation kit for SARA-R412M modules
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1.2 EVK-R4 block diagram
Figure 4 shows the main interfaces and internal connections of the EVK-R4 evaluation kit:
SIM
card holder
(J300)
Reset
(SW303)
Power-on
(SW302)
SARA-R4 adapter board
SARA-R4
Cellular
module
42-pin DIL B2B connector
42-pin DIL B2B connector
EVB-WL3
GNSS
module
GNSS adapter board
RF
USB
UART
converter
Cellular USB
(UART)
(J501)
Cellular RS232
(UART)
(J500)
RS232
UART
converter
UART
MiniUSB/DB9
switch
(SW403)
On-Board/B2B
switch
(SW401)
USB
I2C
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
GPIO2/3/4
GNSS switch
(SW304)
Native
USB
ANT
Figure 4: Block diagram of the EVK-R4 for SARA-R4 modules
The EVK-R4 is formed by three boards:
• The lower one, called EVB-WL3, contains the power supply and other peripherals for the SARA-R4
series cellular module (SIM card holder, Reset button and Power-on button).
• The cellular adapter board, called ADP-R4, contains the SARA-R4 cellular module, the cellular
antenna connector and the USB connector for the cellular module.
• 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 USB interface of the cellular module is available on the native USB connector on the cellular
adapter board, while the other peripherals are available on the dual-in-line male board-to-board
connectors provided on the top layer of the cellular adapter board, which are pin-to-pin compatible to
the connectors on the bottom layer of the adapter board.
The lower board (EVB-WL3) is designed to also be used with other u-blox cellular adapter boards. It
contains additional switches, jumpers, connectors, LEDs and parts that are only partially described in
Figure 1, Figure 2, Figure 3, and 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 to
leave any additional switch in its default configuration.
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1.3 Switches, jumpers and buttons
Power on / off of the whole evaluation kit
Jumper socket to provide the 3.8 V supply to the cellular module VCC input
Push button to switch on the cellular module
Push button to reset the cellular module
Slide switch to attach / detach the cellular module UART from the USB / RS232
connectors: when detached, UART signals are available only on the DIL B2B
connector on the ADP board
EVB
Cellular UART routing
Slide switch to select cellular module UART routing on the USB or RS232
connector
Slide switch to attach / detach the cellular module GPIOs, SIM_DET from
peripherals: when detached, the signals are available only on the DIL B2B
connector on the ADP board
Slide switch to attach / detach the cellular module to / from the GNSS module
(GPIO2-3-4): when detached, the signals are available only on the DIL B2B
connector on the ADP board
Slide switch to connect / disconnect backup battery to / from the V_BCKP pin of
the GNSS module
Table 1: EVK-R4 switch and button descriptions
1.4 LEDs
Power supply plugged in the 9 - 18 V Power Input
Cellular module supplied. Main power switch must be switched on
USB cable plugged in the Cellular native USB connector for USB
access
USB cable plugged in the Cellular USB connector for UART access
Green light is on when UART is routed to the Cellular USB connector
Red light blinks at UART TX or RX data on the Cellular USB connector
UART signals are available only on the DIL B2B connector on ADP board
Green light is on when UART is routed to the Cellular RS232 connector
Red light blinks at UART TX / RX data on the Cellular RS232 connector
EVB
Cellular RI indicator
RI line turns ON (active low)
CTS line turns ON (active low)
EVB Cellular GPIO1 indicator
Green light is activated when cellular GPIO1 is high
EVB Cellular GPIO2 indicator
Green light is activated when cellular GPIO2 is high
EVB Cellular GPIO3 indicator
Green light is activated when cellular GPIO3 is high
EVB Cellular GPIO4 indicator
Green light is activated when cellular GPIO4 is high
GNSS module supply is turned ON
USB cable plugged into the GNSS USB connector
Pulses at 1 Hz when valid GNSS fix
Cellular / GNSS module communication over the DDC (I2C) interface
Table 2: EVK-R4 LED descriptions