Ublox EVK-R8 Series User manual

UBX-22018774 - R01
C1-Public www.u-blox.com
EVK-R8
LENA-R8 series modules evaluation kit
User guide
Abstract
This guide explains how to set up the EVK-R8 evaluation kits to begin evaluating u-blox LENA-R8
series modules supporting LTE Cat 1bis / 2G cellular radio access technologies, plus concurrent
reception of up to 4 GNSS systems with the integrated u-blox UBX-M10 GNSS receiver.

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Document information
Title
EVK-R8
Subtitle
LENA-R8 series modules evaluation kit
Document type
User guide
Document number
UBX-22018774
Revision and date
R01
06-Oct-2022
Disclosure restriction
C1-Public
This document applies to the following products:
Product name
Type number
EVK-R8001
EVK-R8001-00C-00
EVK-R8001M10
EVK-R8001M10-00C-00
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
1Starting up...............................................................................................................................................4
1.1 EVK-R8 overview .........................................................................................................................................4
1.2 EVK-R8 block diagram and basic description .......................................................................................5
1.3 Switches, jumpers and buttons ............................................................................................................... 6
1.4 LEDs............................................................................................................................................................... 7
1.5 Connectors ................................................................................................................................................... 7
1.6 EVK-R8 pin out ............................................................................................................................................8
1.7 Software installation..................................................................................................................................9
1.8 Board setup .................................................................................................................................................. 9
1.9 Enabling error result codes .....................................................................................................................12
1.10 PIN code insertion (when required)........................................................................................................12
1.11 Registration on a cellular network .........................................................................................................12
1.12 Switching off the cellular system in the EVK-R8 ...............................................................................12
Appendix ....................................................................................................................................................... 13
ASetting up AT terminal application .............................................................................................. 13
BSetting up cellular packet data connection on Windows...................................................... 14
B.1 How to install and configure a low data rate modem connection ...................................................14
B.2 How to install and configure a high data rate modem connection .................................................16
CCurrent consumption measurement............................................................................................ 18
DGlossary ................................................................................................................................................. 19
EDeclaration of conformities............................................................................................................. 19
Related documentation ........................................................................................................................... 20
Revision history.......................................................................................................................................... 20
Contact.......................................................................................................................................................... 20

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1Starting up
1.1 EVK-R8 overview
The EVK-R8 kit is a powerful and easy-to-use tool that simplifies the evaluation of u-blox LENA-R8
series multimode modules.
The following evaluation kits are available with u-blox LENA-R8 modules (see Figure 1):
•The EVK-R8001 evaluation kit, for evaluation of LENA-R8001 modules supporting LTE Cat 1bis
and 2G cellular radio access technology
•The EVK-R8001M10 evaluation kit, for evaluation of LENA-R8001M10 modules supporting LTE
Cat 1bis and 2G cellular radio access technology, and also supporting the concurrent reception of
up to 4 GNSS systems with the integrated u-blox UBX-M10050-KB GNSS receiver
All the EVK-R8001 and EVK-R8001M10 evaluation kits are herein identified as EVK-R8.
☞See the LENA-R8 series data sheet [2] and LENA-R8 series system integration manual [3] for the
features supported by the u-blox LENA-R8 series modules.
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
WiFi Rx Antenna
J502
LENA-R8
module
DIL B2B connector
J403
DIL B2B connector
J402
GND
MAX GNSS
Rx Antenna
J103
u-blox
MAX-M10S
GNSS module
GNSS
adapter board
VCC supply
jumper J404
Cellular USB
(UART)
J501
Cellular RS232
(UART)
J500
DL501
DL403
DL405
MAX GNSS
USB
J102
SW403
SW401
DL404
SW300
SW304
SW204
Headset
jack
J303
DS104
DS107
DS105
DS109
DS103
DS500
GND
GND
LTE Cellular
Tx/Rx Antenna
J500
LENA GNSS
Rx antenna
J501
LED700 USB Boot
switch
J200
Cellular USB
(two UARTs)
J600
SW510
DS501
VCC supply
jumper J102
DS107
DS118
LED600
DS121
Cellular USB
(native)
J700
3-pin header
J601
VCC_GNSS
enable J701
VBCKP_GNSS
enable J702
LED701
J104
Figure 1: Overview of EVK-R8 evaluation kit for LENA-R8 modules

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1.2 EVK-R8 block diagram and basic description
Figure 2 shows the main interfaces and internal connections of the EVK-R8 evaluation kit:
SIM
card holder
(J300)
LENA-R8 adapter board
LENA-R8
Module
42-pin DIL B2B connector 42-pin DIL B2B connector
EVB-WL3
GNSS
module
GNSS adapter board
RF_IN
USB
2-UART
converter
USB
(Cellular Main UART + GNSS UART)
(J501)
RS232
(Cellular Main UART)
(J500)
RS232
UART
converter Cellular Main UART
GNSS UART
MiniUSB/DB9
switch
(SW403)
On-board/B2B
switch
(SW401)
USB I2C
DC/DC
Step - down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
LDO
GPIO2/3/4
GNSS switch
(SW304)
Cellular
Native USB
(J700)
Cellular
Antenna
(J500)
USB
(Cellular UART + AUX UART)
(J600)
GNSS
Antenna
(J501)
USB / 2-UART converter
ANT_GNSS
VCC jumper
(J102)
3-pin
(J601)
GNSS UART
Cellular
Reset
(SW303)
Cellular
Power-on
(SW302)
Headset jack
(J303)
Main UART
AUX UART
Main UART
Audio
Codec
WiFi
Antenna
(J502)
RSVD ANT
3.8 V
LDO
VCC
VCC_GNSS
LDO VBCKP_GNSS
1.8 V
1.8 V
USB_BOOT
(J200)
J702
J701
Figure 2: Block diagram of EVK-R8
The EVK-R8 is formed by three boards:
•The lower one, called EVB-WL3 or simply EVB, contains the power supply and other peripherals for
the cellular module (such as SIM card holder, reset button and power-on button).
•The LENA-R8 adapter board, called ADP-R8, contains the LENA-R8 module, the cellular antenna
connector (ANT), the cellular USB “native”connector (J700), the cellular USB boot slide switch
(J200), the cellular USB “two UARTs”connector (J201), the cellular UARTs routing switch (J601),
the cellular VCC jumper (J102), an audio codec, the LENA-R8001M10 GNSS antenna connector
(ANT_GNSS), the LENA-R8001M10 VCC_GNSS enable jumper (J701), and the LENA-R8001M10
VBCKP_GNSS enable jumper (J702).
•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 LENA-R8 and the GNSS adapter boards (ADP-R8 and ADP-GNSS respectively) are connected by
male header board-to-board connectors on the bottom of the adapter boards and their corresponding
female connectors on top of the lower board (EVB-WL3).
The USB interface of the LENA-R8 cellular system is available on the native USB connector (J700) on
the cellular adapter board (ADP-R8).
The main UART and the auxiliary UART interfaces of the LENA-R8 cellular system can be routed as
follows, by the 3-way UARTs’routing switch (J601) available on the LENA-R8 adapter board (ADP-R8)
as illustrated in Figure 3:
•EVB position (pin 1-2 of J601 shorted by jumper socket): main UART routed as 8-wire interface to
the lower EVB-WL3 board by the dual-in-line male board-to-board connectors mounted on the
bottom of the adapter board ADP-R8. According to the mini-USB / DB9 switch (SW403) setting on
the EVB-WL3, the main 8-wire UART interface can be accessed on the USB connector (J501) or
on the RS232 DB9 connector (J500) on the EVB-WL3, with the on-board / B2B switch (SW401) on
the EVB-WL3 set to “on-board”. The auxiliary UART interface is not available.
•ADP position (pin 2-3 of J601 shorted by jumper socket): main UART and auxiliary UART routed
as 4-wire interfaces to the USB two UARTs connector (J600) mounted on the adapter board, with
the on-board / B2B switch (SW401) on the EVB-WL3 board is set to “B2B”.

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•No position (no jumper socket on J601): main 8-wire UART interface or main 4-wire UART with
auxiliary 4-wire UART interfaces, routed to the dual-in-line male header connectors mounted on
the top of the adapter board ADP-R8, allowing a connection to an external compatible device with
the on-board / B2B switch (SW401) on the EVB-WL3 board set to “B2B”.
J601 pin 1
J601 pin 3
Figure 3: 3-pin header J601 available to set the routing of the UART interfaces
The other peripherals of the cellular module are available on the dual-in-line male header connectors
(J402 / J403) on the top layer of the cellular adapter board ADP-R8.
The lower board is compatible with other u-blox cellular adapter boards. It contains additional
switches, jumpers, connectors, LEDs and parts that are 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 to leave any additional switch in
its default configuration.
1.3 Switches, jumpers and buttons
Function
Description
Name
Board
Main power switch
Power on / off the whole evaluation kit
SW400
EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular VCC input
J404
EVB
Cellular power-on
Push button to switch-on the cellular system of LENA-R8
SW302
EVB
Cellular reset
Push button to reset the cellular system of LENA-R8
SW303
EVB
Cellular UART detach
Slide switch to attach / detach cellular UART from USB / RS232 connectors:
when detached, UART signals available only on DIL B2B connector on ADP board
SW401
EVB
Cellular UART routing
Slide switch to select cellular main UART routing on USB or on RS232 connector
SW403
EVB
Cellular GPIO detach
Slide switch to attach / detach the cellular GPIOs from peripherals: when detached,
the signals are available only on the DIL B2B connector on ADP-R8 board
SW300
EVB
Cellular GNSS detach
Slide switch to attach / detach the cellular system of LENA-R8 to the GNSS module
mounted on the ADP-GNSS: when detached, signals are available only on DIL B2B
connector on ADP-R8 board
SW304
EVB
GNSS V_BCKP
Slide switch to connect / disconnect backup battery to V_BCKP pin of the GNSS
module mounted on the ADP-GNSS
SW204
EVB
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular VCC input
J102
ADP-R8
Cellular UARTs routing
Jumper to route cellular UART interfaces to the USB two UARTs connector on the
ADP-R8 (both Main and Auxiliary UART) or to lower EVB-WL3 motherboard by
means of Dual-In-Line male Board-to-Board connectors (only Main UART)
J601
ADP-R8
Cellular USB boot
Slide switch to select cellular system boot mode: normal operating boot mode or
USB boot mode for FW update
J200
ADP-R8
VCC_GNSS enable
Jumper socket to enable 1.8 V supply to VCC_GNSS input of LENA-R8001M10
J701
ADP-R8
VBCKP_GNSS enable
Jumper socket to enable 1.8 V supply to VBCKP_GNSS input of LENA-R8001M10
J702
ADP-R8
Table 1: EVK-R8 switch and button descriptions

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1.4 LEDs
Function
Description
LED #
Board
Color
Main power
Power supply plugged in the 9 - 18 V Power Input
DL401
EVB
Cellular VCC
Cellular module supplied. Main power switch must be switched on
DL400
EVB
Cellular native USB
USB cable plugged in the Cellular native USB connector
LED700
ADP-R8
Cellular two UARTs USB
USB cable plugged in the Cellular two UARTs USB connector
LED600
ADP-R8
Cellular USB
USB cable plugged in the Cellular USB connector for UART access
DL501
EVB
Cellular USB / UART
Green light is activated when UART is routed to the cellular USB connector
Red light blinks at UART TX or RX data on the Cellular USB connector
DL403
EVB
Cellular UART detach
UART signals are available only on the DIL connector on ADP-R8 board
DL404
EVB
Cellular RS232 / UART
Green light is activated when UART is routed to Cellular RS232 connector
Red light blinks at UART TX or RX data on the Cellular RS232 connector
DL405
EVB
Cellular RI indicator
RI line turns ON (active low)
DS501
EVB
Cellular CTS indicator
CTS line turns ON (active low)
DS500
EVB
Cellular GPIO1 indicator
Green light is activated when cellular GPIO1 is high
DS107
EVB
Cellular GPIO2 indicator
Green light is activated when cellular GPIO2 is high
DS105
EVB
Cellular GPIO3 indicator
Green light is activated when cellular GPIO3 is high
DS109
EVB
Cellular GPIO4 indicator
Green light is activated when cellular GPIO4 is high
DS103
EVB
GNSS time pulse
Time pulse of the LENA-R8001M10 GNSS system
LED701
ADP-R8
GNSS supply
Supply of the GNSS module mounted on the ADP-GNSS is turned ON
DS118
ADP-GNSS
GNSS USB
USB cable plugged in GNSS USB connector
DS124
ADP-GNSS
GNSS time pulse
Time pulse of the GNSS module mounted on the ADP-GNSS
DS121
ADP-GNSS
Cellular / GNSS DDC
Cellular / GNSS module communication over the DDC (I2C) interface
DS132
ADP-GNSS
Table 2: EVK-R8 LED descriptions
1.5 Connectors
Function
Description
Name
Board
9 - 18 V Power Input
Connector for the AC / DC power adapter of the EVK
AC: 100-240 V, 0.8 A, 50-60 Hz / DC: +12 V, 2.5 A
IEC 60417-5172
Class II equipment
J400
EVB
SIM card holder
SIM card holder
J300
EVB
Cellular antenna
SMA connector for the cellular antenna (ANT, Tx/Rx)
J500
ADP-R8
GNSS antenna
SMA connector for LENA-R8001M10 GNSS system (ANT_GNSS, Rx)
J501
ADP-R8
Cellular native USB
Mini USB connector for the cellular native USB interface
J700
ADP-R8
Cellular two UARTs USB
Mini USB connector for the cellular main and auxiliary USB interfaces
J600
ADP-R8
Cellular USB (UART)
Mini USB connector for the cellular UART interface converted as USB interface
J501
EVB
Cellular RS232 (UART)
DB9 connector for the cellular UART interface converted as RS232 interface
J500
EVB
DIL B2B headers
Dual-In-Line Board-to-Board connectors for LENA-R8 interfaces
J402-J403
ADP-R8
Cellular headset
Audio headset jack connector for the cellular audio interface
J303
EVB
GNSS antenna
SMA connector for the antenna of the GNSS module mounted on ADP-GNSS
J208
ADP-GNSS
GNSS USB
Mini USB connector for the GNSS module USB interface
J102
ADP-GNSS
GNSS backup battery
Backup battery socket for the GNSS module (under GNSS adapter board)
BT200
EVB
GND
Ground terminals for the probe reference
J402÷J406
EVB
Table 3: EVK-R8 connector descriptions
⚠Caution! In the unlikely event of a failure in the internal protection circuitry, there is a risk of an explosion
when charging a fully or partially discharged battery. Replace the battery when it no longer has a
sufficient charge for unit operation. Check the battery before use if the device has not been used for an
extended period of time.
⚠Caution! Risk of explosion if battery is replaced with incorrect type. Dispose battery according to rules!

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1.6 EVK-R8 pin out
Table 4 shows the Interfaces of LENA-R8 series modules, as routed on the 42-pin dual-in-line board-
to-board connectors (J402, J403) on the adapter board ADP-R8 of the evaluation kit
LENA-R8 series
DIL B2B
LENA-R8 series
DIL B2B
LENA-R8 series
DIL B2B
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
Pin N°
Name
Name / Pin N°
1
GND
J402 pins 7-10
24
GPIO3
J402 pin 32
47
TXD_GNSS
J402 pin 20
2
V_BCKP
J402 pin 3
25
GPIO4
J402 pin 25
48
RXD_GNSS
J402 pin 19
3
GND
J402 pins 7-10
26
SDA
J403 pin 21
49
RSVD
Not present
4
V_INT
J402 pin 36
27
SCL
J403 pin 20
50
GND
J402 pins 7-10
5
GND
J402 pins 7-10
28
USB_D-
Not present
51
VCC
J403 pins 8-10
6
DSR
J402 pin 18
29
USB_D+
Not present
52
VCC
J403 pins 8-10
7
RI
J402 pin 17
30
GND
J402 pins 7-10
53
VCC
J403 pins 8-10
8
DCD
J402 pin 11
31
ANT_GNSS
Not present
54
GND
J402 pins 7-10
9
DTR
J402 pin 12
32
GND
J402 pins 7-10
55
GND
J402 pins 7-10
10
RTS
J402 pin 13
33
USB_BOOT
Not present
56
ANT
Not present
11
CTS
J402 pin 14
34
I2S_WA
J403 pin 25
57
GND
J402 pins 7-10
12
TXD
J402 pin 15
35
I2S_TXD
J403 pin 24
58
GND
J402 pins 7-10
13
RXD
J402 pin 16
36
I2S_CLK
J403 pin 22
59
ANT_DET
Not present
14
GND
J402 pins 7-10
37
I2S_RXD
J403 pin 23
60
GND
J402 pins 7-10
15
PWR_ON
J402 pin 29
38
SIM_CLK
J403 pin 15
61
GND
J402 pins 7-10
16
GPIO1
J402 pin 33
39
SIM_IO
J403 pin 14
62
RSVD
Not present
17
VUSB_DET
Not present
40
SIM_RST
J403 pin 16
63
GND
J402 pins 7-10
18
RESET_N
J403 pin 26
41
VSIM
J403 pin 13
64
GND
J402 pins 7-10
19
GPIO6
J402 pin 24
42
GPIO5
J402 pin 23
65-96
GND
J402 pins 7-10
20
GND
J402 pins 7-10
43
GND
J402 pins 7-10
97
RFCTRL1
J403 pin 5
21
RSVD
Not present
44
ANT_ON
J403 pin 3
98
RFCTRL2
J403 pin 6
22
GND
J402 pins 7-10
45
TIMEPULSE
J403 pin 2
99
VCC_GNSS
Not present
23
GPIO2
J402 pin 31
46
EXTINT
J403 pin 4
100
VBCKP_GNSS
Not present
Table 4: Interfaces of LENA-R8 series modules
Table 5 shows the p in-out of the 42-pin dual-in-line board-to-board connectors (J402, J403) on the
adapter board ADP-R8.

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Dual-in-line board-to-board connector J402
Dual-in-line board-to-board connector J403
Signal name
Pin N°
Pin N°
Signal name
Signal name
Pin N°
Pin N°
Signal name
GND
1
2
Not connected
GND
1
2
TIMEPULSE
V_BCKP
3
4
Not connected
ANT_ON
3
4
EXTINT
Not connected
5
6
Not connected
RFCTRL1
5
6
RFCTRL2
GND
7
8
GND
VCC
7
8
VCC
GND
9
10
GND
VCC
9
10
VCC
DCD
11
12
DTR
Not connected
11
12
Not connected
RTS
13
14
CTS
VSIM
13
14
SIM_IO
TXD
15
16
RXD
SIM_CLK
15
16
SIM_RST
RI
17
18
DSR
Not connected
17
18
Not connected
RXD_GNSS
19
20
TXD_GNSS
Not connected
19
20
SCL
Not connected
21
22
Not connected
SDA
21
22
I2S_CLK
GPIO5
23
24
GPIO6
I2S_RXD
23
24
I2S_TXD
GPIO4
25
26
Not connected
I2S_WA
25
26
RESET_N
Not connected
27
28
Not connected
MIC_GND
27
28
MIC_BIAS
PWR_ON
29
30
Not connected
Not connected
29
30
Not connected
GPIO2
31
32
GPIO3
Not connected
31
32
Not connected
GPIO1
33
34
Not connected
SPK_P
33
34
SPK_N
Not connected
35
36
V_INT
Not connected
35
36
Not connected
Not connected
37
38
Not connected
Not connected
37
38
Not connected
Not connected
39
40
Not connected
Not connected
39
40
Not connected
GND
41
42
GND
GND
41
42
Not connected
Table 5: Pin-out of the 42-pin dual-in-line board-to-board connectors (J402, J403)
☞The pins / interfaces that are not supported by a specific LENA-R8 product version should not be
driven by an external device. For the features supported by each LENA-R8 product version, see the
LENA-R8 series data sheet [2] and the LENA-R8 series system integration manual [3].
1.7 Software installation
The LENA-R8 USB drivers for Windows OS are available with the EVK-R8. Download the executable
file from www.u-blox.com and save it to any location on the computer. Start the installation by
running the executable.
1.8 Board setup
1. Insert a SIM card into the SIM card holder (J300 on the EVB).
2. Connect the cellular antenna provided with the EVK-R8 evaluation kit box to the cellular antenna
SMA connector on the ADP-R8 (ANT, RF input/output for transmission and reception of LTE/2G
RF signals)
3. For LENA-R8001M10, connect the GNSS antenna provided with the EVK-R8 evaluation kit box
to the GNSS antenna SMA connector on the ADP-R8 (ANT_GNSS, RF input for the reception of
the GNSS RF signals). Place the GNSS antenna in a location with a good view of the sky.
4. For LENA-R8001, if it is required to use the GNSS functionality of the MAX-M10S GNSS module
mounted on ADP-GNSS, connect the GNSS antenna provided with the evaluation kit to the GNSS
antenna SMA connector on the ADP-GNSS. Keep the cellular GNSS detach switch (SW304) in
“GNSS” position. Place the GNSS antenna in a location with a good view of the sky.

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5. Connect the AC / DC +12 V power adapter provided with the evaluation kit box to the 9 –18 V
Power Input connector (J400 on the EVB). LED DL401 lights turn blue.
6. Be sure to provide a jumper socket on the Cellular VCC supply jumper (J404 on the EVB) and to
Cellular VCC supply jumper (J102 on the ADP-R8). These provide the connection from the 3.8 V
output of the supply circuit from the EVB to the VCC input of the cellular system of LENA-R8.
7. For LENA-R8001M10, be sure to provide a jumper socket on the VCC_GNSS enable jumper
(J701 on the ADP-R8) and to VBCKP_GNSS enable jumper (J702 on the ADP-R8). These enable
the 1.8 V supply for the VCC_GNSS and VBCKP_GNSS inputs of the LENA-R8001M10 GNSS
system, using the 3.8 V output of the supply circuit mounted on the EVB.
8. Be sure to set the Cellular USB boot slide switch (J200 on ADP-R8) on the “NORMAL” position.
If a FW update over USB is to be executed, set the slide switch on the “USB” position.
9. To enable the board power supply, turn the Main power switch (SW400 on the EVB) to the ON
position. LED DL400 lights turn green. The cellular system of the LENA-R8 module is powered
but still switched off. The GNSS system of the LENA-R8001M10 module switches on.
10. For communication via the cellular USB interface, connect a USB cable to the Cellular native USB
(J700) connector (on ADP-R8). LED700 on ADP-R8 lights turn blue.
Once the switch-on of the cellular system is triggered (see point 13), the COM ports listed in the
Table 6 are enabled by the Windows USB driver after the end of the module boot (details as the
numbering of the ports can be seen via the Windows Device Manager)
1
:
Parameter
Type
Remarks
Unisoc Usb Serial Port 0
Ports (COM & LPT)
AT command interface and data communication
Unisoc Usb Serial Port 1
Ports (COM & LPT)
Reserved
Unisoc Usb Serial Port 2
Ports (COM & LPT)
Reserved
Unisoc Usb Serial Port 3
Ports (COM & LPT)
Diagnostic log (CP)
Unisoc Usb Serial Port 4
Ports (COM & LPT)
Diagnostic log (AP)
Unisoc Usb Serial Port 5
Ports (COM & LPT)
GNSS data tunneling
Unisoc Usb Serial Port 6
Ports (COM & LPT)
Reserved
Unisoc Usb Serial Port 7
Ports (COM & LPT)
Reserved
Table 6: Cellular USB interface configuration
Run an AT terminal (e.g., the u-blox m-center tool), select the AT port with below settings:
▪Data rate: 115200 bit/s
▪Data bits: 8
▪Parity: N
▪Stop bits: 1
▪Flow control: HW
See appendix Afor how to configure the u-blox m-center AT terminal for Windows.
1
A message of “driver installation fail” may appear on Windows if the USB cable has been connected before the end of the
module boot, but this can be ignored as the normal operating functionality of the module will be available anyway after the end
of the module boot.

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11. For communication via the UART interfaces, the following connections are allowed and can be
alternatively enabled in a mutually exclusive way (see Table 7 for the switch position and LED
status, and see Figure 1 and Figure 3 for the location of the related connectors, slide switches
and the 3-way UARTs’routing switch J601 on the ADP-R8):
a. Connect a USB cable to the mini-USB connector (Cellular USB Main UART, J501 on EVB).
The LED DL501 lights turn blue. When a USB cable is connected to this mini-USB connector,
two COM ports are enabled in Windows.
•The main 8-wire UART interface of the cellular system is available over the first COM
port opened by the driver after the end of the cellular system boot, once the switch-on of
the cellular system is triggered (see point 13).
•The 2-wire UART interface of the LENA-R8001M10 GNSS system is available over the
second COM port opened by the driver after the end of the GNSS system boot.
b. Connect an RS232 cable to the DB9 connector (Cellular RS232 Main UART, J500 on EVB):
the main 8-wire UART interface of the cellular system is available over RS232 after the end
of the cellular system boot, once the switch-on of the cellular system is triggered (see 13).
c. Connect a USB cable to the mini-USB connector (Cellular USB two UARTs, J600 on ADP-R8).
The LED600 lights turn green. The two 4-wire UART interfaces of the cellular system are
respectively available over the two numbered COM ports opened by the driver after the end
of the cellular system boot once the switch-on of the cellular system is triggered (see 13). (To
enable two UART interfaces, see the AT commands manual [1], the +USIO AT command.)
Type of connections
SW401
SW403
J601
LED
Access to the main UART interface over the Cellular USB
(Main UART) mini-USB connector on EVB-WL3 (J501)
ON BOARD
MINIUSB
Jumper socket
on pins 1-2
DL403
DL501
Access to the LENA-R8001M10 GNSS UART interface over
the Cellular USB mini-USB connector on EVB-WL3 (J501)
ON BOARD
MINIUSB
Jumper socket
on pins 1-2
DL403
DL501
Access to the main UART interface over the Cellular RS232
(Main UART) DB9 connector on EVB-WL3 (J500)
ON BOARD
DB9
Jumper socket
on pins 1-2
DL405
Access to the two UART interfaces over the Cellular USB
(Two UARTs) mini-USB connector on ADP-R8 (J201)
B2B
Do not care
Jumper socket
on pins 2-3
DL404
DS201
Access to UART(s) interface(s) over the DIL B2B header on
the top of the adapter board (J402)
B2B
Do not care
No jumper socket
DL404
Table 7: UART serial interfaces configuration
Run an AT terminal (such as the u-blox m-center tool) selecting the AT port, with these settings:
▪Data rate: 115200 bit/s
▪Data bits: 8
▪Parity: N
▪Stop bits: 1
▪Flow control: HW
See appendix Afor how to configure the u-blox m-center AT terminal for Windows.
12. If the audio functionality is required, connect the headset provided with the evaluation kit box to
the Headset jack connector (J303 on EVB).
13. Press the Cellular power-on button (SW302 on the EVB) to switch on the cellular system of the
LENA-R8 module mounted on the APD-R8.

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1.9 Enabling error result codes
Command sent by DTE (user)
DCE response (module)
Description
AT+CMEE=2
OK
Enable the cellular module to report verbose error
result codes.
1.10 PIN code insertion (when required)
Command sent by DTE (user)
DCE response (module)
Description
AT+CPIN="8180"
OK
Enter the PIN code, if needed (enter the PIN of the SIM
card –8180 is an example).
AT+CLCK="SC",0,"8180"
OK
Unlock the PIN at power-on (the last parameter is the
PIN of the SIM card –8180 is an example).
AT+CLCK="SC",1,"8180"
OK
Lock the PIN at power-on (the last parameter is the PIN
of the SIM card –8180 is an example).
1.11 Registration on a cellular network
Command sent by DTE (user)
DCE response (module)
Description
AT+CREG?
+CREG: 0,1
OK
Verify the CS network registration.
AT+CEREG?
+CEREG:
0,1,"5684","03761b14",7
OK
Verify the EPS network registration.
AT+COPS=0
OK
Register the module on the network.
The cellular module automatically registers itself on
the cellular network. This command is necessary only if
the auto-registration failed (AT+CREG? returns 0,0).
AT+COPS?
+COPS: 0,0,"I TIM",7
OK
Read the operator name and radio access technology
(RAT).
For the complete description and syntax of the AT commands supported by LENA-R8 series modules,
see the AT commands manual [1].
1.12 Switching off the cellular system in the EVK-R8
To switch off the cellular system in the EVK-R8, send the +CPWROFF AT command. Make sure to use
this command before switching off the main power, otherwise settings and configuration parameters
may not be saved in the internal non-volatile memory (NVM) of the cellular module.

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Appendix
ASetting up AT terminal application
The u-blox m-center cellular module evaluation tool is a powerful platform for evaluating, configuring
and testing u-blox cellular products. m-center includes an AT commands terminal for communication
with the device and can be downloaded for free from www.u-blox.com. For m-center example scripts,
visit https://github.com/u-blox/m-center.
1. Follow the board setup instructions in section 1.8 to provide all the required connections and
switching on the cellular module.
2. Run the m-center tool: after the m-center start-up, the Home page appears.
3. On the Home page, set up the AT COM port;
for the setting values see section 1.8.
Check with the Windows Device Manager to
find out which COM port is being used by the
EVK-R8.
Figure 4: “Home” page
4. Enable the connection to u-blox cellular
module by clicking on the Connect button.
5. Retrieve the module and network information
by clicking on the Get Info button.
6. The module information is retrieved and
displayed on the Home page.
7. Click on the AT Terminal button, found at the
upper right of the Home page. A new window
opens and the AT-command terminal is now
ready for communication with the EVK-R8.
Figure 5: AT Terminal window
8. The AT terminal is ready to use.
For the complete list of AT commands
supported by the modules and their syntax,
see the u-blox AT commands manual [1].
For more information on using the u-blox m-center, press the F1 key to open the m-center help window
on the computer.

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BSetting up cellular packet data connection on
Windows
This section describes how to set up a packet data connection on Windows 10 using the operating
system’s TCP/IP stack and EVK-R8. This is also referred to as a dial-up connection.
The following examples describe how to install and configure two different kinds of modems on
Windows:
1. Low data rate modem: via the UART interface of the cellular module connected to the Windows
PC by the Cellular USB connector (J501 on EVB) or the Cellular RS232 connector (J500 on EVB)
2. High data rate modem: via the native USB interface of the cellular module connected to the
Windows PC by the Cellular Native USB connector (J700 on the ADP-R8)
B.1 How to install and configure a low data rate modem
connection
This example describes how to install and configure a low data rate packet data connection on a PC
with Windows 10 operating system. This uses the TCP/IP stack of the PC over the UART interface of
the cellular module connected to the Windows PC by the Cellular USB connector (J501 on EVB) or the
Cellular RS232 connector (J500 on EVB).
1. From Control Panel, select Phone and
Modem > Modems > Add.
This opens the Add Hardware Wizard.

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2. Tick “Don’t detect my modem” checkbox.
Click Next.
3. Select Standard 33600 bps Modem.
Click Next.
4. Select COM port for data communication
and click Next. The modem will be installed
on this COM port.
5. Click Finish to complete the installation.

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6. Now the new modem is visible in Control
Panel, under Phone and Modem > Modems.
Any extra initialization AT command (e.g., to set
a specific APN name) can be entered by
selecting Properties and filling in Advanced >
Extra initialization commands text box.
Now the module is ready, and the connection can be configured.
The modem configuration can also be edited in Device Manager, by clicking on the modem name.
B.2 How to install and configure a high data rate modem
connection
This example describes how to install and configure a high data rate packet data connection on a PC
with the Windows 10 operating system, using the TCP/IP stack of the PC, over the native USB
interface of the cellular module connected to the Windows PC by the Cellular Native USB connector
(J700 on the ADP-R8).
1. From Control Panel, select Network and
Sharing Center > Set up a new connection
or network.
2. Click Connect to the Internet and then
Next.

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3. Select Dial-up and if requested, the
modem previously installed.
4. Select one of the two AT commands
ports.
5. Enter the parameters for the dial-up
connection:
oThe module telephone number:
*99***1#
(change if using a PDP context
different from 1)
oThe specific account information for
the network operator
oA name for the connection (e.g., “R8
Dial-up”)
The packet data connection is now ready to be used with EVK-R8. Click Connect to start the
connection, then start a browser to check internet connectivity.
Consult the cellular network operator for username and password. In most cases, they can be left
empty.

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CCurrent consumption measurement
The current consumption of the LENA-R8 module cellular system can be measured by removing the
jumper socket from the Cellular VCC supply jumper (J102 on the ADP-R8, see Figure 6).
Cellular VCC supply jumper socket (J102)
to be removed for
LENA-R8 cellular system
current consumption measurements
Figure 6: Jumper socket to be removed for cellular module’s current consumption measurement
A suitable external digital multi-meter (as the Keysight 34465A, 34410A or 34411A) can be used for
current consumption measurements: in this example, the 3.8 V supply circuit on the EVB will supply
the cellular module, with the digital multi-meter placed in series as illustrated in Figure 7.
LENA-R8 adapter board
LENA-R8
module
42-pin DIL B2B connectors
EVB-WL3
Step - down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J102)
VCC
Digital multimeter
DCI
+ –
VCC jumper
(J404)
Figure 7: Block diagram of the setup for cellular module’s current consumption measurement using a current meter
Alternatively, a suitable external DC power supply with the dynamic current measurement capabilities
(e,g., the portable and cheap Qoitech Otii Arc, or the more accurate Keysight N6705B, or the models
designed for mobile communications Keysight 66319B/D or 66321B/D) can be used, acting also as
3.8 V supply source for the cellular module mounted on the adapter board, as illustrated in Figure 8.
LENA-R8 adapter board
LENA-R8
module
42-pin DIL B2B connectors
EVB-WL3
Step - down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J102)
VCC
Power analyzer
PSU
VCC jumper
(J404)
+GND
GND
Figure 8: Block diagram of the setup for cellular module’s current consumption measurement using a DC power analyzer

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DGlossary
Abbreviation
Definition
ADP
Adapter Board
APN
Access Point Name
AT
AT Command Interpreter Software Subsystem, or attention
B2B
Board-To-Board
CS
Circuit Switched
CTS
Clear To Send
DCI
Direct Current
DDC
Display Data Channel
DIL
Dual In Line
EPS
Evolved Packet System
EVB
Evaluation Board
EVK
Evaluation Kit
GND
Ground
GNSS
Global Navigation Satellite System
GPIO
General Purpose Input Output
GPRS
General Packet Radio Service
IMS
IP Multimedia Subsystem
IP
Internet Protocol
LDO
Low Drop-Out
LED
Light Emitting Diode
LTE
Long Term Evolution
NVM
Non-Volatile Memory
PIN
Personal Identification Number
PS
Packet Switch
PSU
Power Supply Unit
RAT
Radio Access Technology
RF
Radio Frequency
RI
Ring Indicator
SIM
Subscriber Identity Module
TCP
Transfer Control Protocol
UART
Universal Asynchronous Receiver-Transmitter
URC
Unsolicited Result Code
USB
Universal Serial Bus
VCC
Voltage Common Collector
Table 8: Abbreviations and terms
EDeclaration of conformities
The equipment is intended for indoor usage. It is the user’s duty to verify if further restrictions apply,
such as in airplanes, hospitals, or hazardous locations (petrol stations, refineries, etc.).
Any changes or modification made to this equipment will void its compliance to the safety
requirements.
Maintenance, inspections and/or repairs of the EVK-R8 shall be performed by u-blox AG.

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Related documentation
[1] u-blox LENA-R8 series AT commands manual, UBX-22016905
[2] u-blox LENA-R8 series data sheet, UBX-22003110
[3] u-blox LENA-R8 series system integration manual, UBX-22015376
☞For regular updates to u-blox documentation and to receive product change notifications, register
on our homepage (www.u-blox.com).
Revision history
Revision
Date
Name
Comments
R01
06-Oct-2022
sses
Initial release
Contact
For further support and contact information, visit us at www.u-blox.com/support.