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1.3 Switches, jumpers and buttons
Description
Function
Main power switch
Power on / off of the whole evaluation kit
Cellular VCC
Jumper socket to provide the 3.8 V supply to the cellular module VCC input
Cellular power on
Push button to switch on / off SARA-R410M /-R412M modules
Push button to switch on / off / reset SARA-R422M8S modules
Cellular reset
Push button to abrupt switch off the SARA-R410M /-R412M modules
Cellular UART detach
Slide switch to attach / detach the cellular module main primary UART from the
USB / RS232 connectors on EVB-WL3
Cellular UART routing
Slide switch to select cellular module main primary UART routing on the USB or
RS232 connector on EVB-WL3
Cellular UART routing
3-pin header to route and make accessible the UART(s) of SARA-R42 modules
over the USB connector on the ADP board, or over the USB or RS232 connectors
on the EVB-WL3, or over the DIL B2B connector on the top of the ADP board
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 connector on the
ADP board
Cellular GNSS detach
2
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
GNSS V_BCKP
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
Function
Description
Main power
Power supply plugged in the 9 - 18 V Power Input
Cellular VCC
Cellular module supplied. Main power switch must be switched on
Cellular USB
USB cable plugged in the Cellular USB connector (J501) for access to
(main UART)
the main UART interface of cellular module
Cellular USB
Green light is on when the SW401 is in "on-board" position, and when
(main UART)
the cellular module main UART is routed to the Cellular USB connector
Red light blinks at UART TX or RX data on the Cellular USB connector
Cellular main UART
UART signals of the cellular module are available only on the ADP
attach/detach
board.
Cellular RS232
Green light is on when the main UART of the cellular module is routed
(main UART)
to the Cellular RS232 connector (J500)
Red light blinks at UART TX / RX data on the Cellular RS232 connector
Cellular RI indicator
RI line turns ON (active low)
Cellular CTS indicator
CTS line turns ON (active low)
Cellular GPIO1 indicator Green light is activated when cellular GPIO1 is high
Cellular GPIO2 indicator Green light is activated when cellular GPIO2 is high
Cellular GPIO3 indicator Green light is activated when cellular GPIO3 is high
Cellular GPIO4 indicator Green light is activated when cellular GPIO4 is high
SARA GNSS Timepulse SARA-R422M8S GNSS TimePulse output
Cellular native USB
USB cable plugged in the Cellular native USB connector (J104 / J105)
on the ADP-R4, for access to the USB interface of cellular module
2
For EVK-R422M8S it is recommended to keep this switch on "detach" position.
UBX-16029216 - R07
C1-Public
Starting up
EVK-R4 - User guide
Board
Name
SW400
EVB
J404
EVB
J109
ADP-R42
SW302
EVB
SW303
EVB
SW401
EVB
SW403
EVB
J248
ADP-R42
SW300
EVB
SW304
EVB
SW204
EVB
LED # Board
Color
DL401 EVB
DL400 EVB
DL501 EVB
DL403 EVB
DL404 EVB
DL405 EVB
DS501 EVB
DS500 EVB
DS107 EVB
DS105 EVB
DS109 EVB
DS103 EVB
DS139 ADP-R42
DS100 ADP-R4x
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