Ublox EVK-N2 Series, User Manual

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EVK-N2 - User guide
UBX-17005115 - R05 Appendix Page 15 of 18
D Current consumption measurement
Current consumption of SARA-N2 series modules can be measured on the EVK-N2 evaluation kits
by removing the jumper socket from the Cellular VCC supply jumper J103 available on the SARA-N2
Adapter Board, as shown in
Figure 5 .
Cellular VCC supply jumper socket (J103)
to be removed for SARA-N2 module
current consumption measurements
Figure 5: Jumper socket to be removed for SARA-N2 modules current consumption measurement
A suitable external digital multi-meter (as for example the Keysight/Agilent 34465A, 34410A or
34411A) can be used for current consumption measurements: in this case the supply circuit on the
EVB will supply the SARA-N2 module mounted on the adapter board, with the digital multi-meter
placed in series as described in
Figure 6 .
SARA-N2 adapter board
SARA-N2
Cellular
module
42
-p
in
D
IL
B
2B
c
onne
ct
or
s
EVB-WL3
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J103)
VCC
Digital Multimeter
DCI
+ –
VCC jumper
(J404)
Figure 6: Block diagram of current consumption setup for SARA-N2
Alternatively, a suitable external DC power supply with dynamic current measurement capabilities
(as for example the Agilent 66319B/D) can be used for current consumption measurements, acting
also as supply source for the SARA-N2 module mounted on the adapter board.