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DS124
GNSS adapter board
GNSS module
DS132
Secondary
Cellular antenna connector
ANT2 – J104
Micro SD Card - J302
DS100
Cellular native USB
J102
Primary
Cellular antenna connector
ANT1 – J105
DS107
DS105
UART2 jumpers – J108
DS109
DS103
UART3 jumpers – J109
UART1 jumpers – J107
GND
DIL B2B connector
J201
Cellular adapter board
Figure 1: Overview of the EVK-L4 evaluation kit for TOBY-L4 modules
UBX-17013792 - R01
GNSS antenna
Cellular USB
connector
(UART0/UARTx)
J103
J501
GNSS USB
DL403
J102
DS118
DS121
RJ45 Ethernet Connector
TOBY-L4
Cellular module
Cellular RS232
(UART0)
J500
DL501
DS501
DL503
DS500
TP100
TP101
Headset jack
J305
J303
EVK-L4 - User Guide
9 – 18 V
Power input
J400
DL405
SW300
Main power switch
DL401
DL404
GND
SW401
SW403
SW304
Wi-Fi antenna connector
WL_ANT - J303
SW204
SW510
DL400
Cellular VCC supply jumper
GND
SIM card holder
DIL B2B connector
Cellular power-on
Cellular reset
SW303
SW400
ELLA-W1
Wi-Fi module
J404
J300
J200
SW302
Starting up
Page 5 of 23
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