User Manual

Table Of Contents
SARA-R4 series-AT commands manual
UBX-17003787 - R16
16GPIO
Page 189 of 401
Time
Voltage
V
H
V
L
Figure 1: GPIO pin progress for no service
16.1.3.2Registered home network 2G
Cyclic Output / High for 100 ms, Output / Low for 2 s
Time
Voltage
V
H
V
L
2 s
100
ms
Figure 2: GPIO pin progress for registered home network 2G
16.1.3.3Registered home network 3G
Cyclic Output / High for 50 ms, Output / Low for 50 ms, Output / High for 50 ms, Output / Low for 2 s
Time
Voltage
V
H
V
L
2 s
50
ms
Figure 3: GPIO pin progress for registered home network 3G
16.1.3.4Registered home network NB1 / NB2
Cyclic Output / High for 100 ms, Output / Low for 30 s