EVK-G45 - User Guide
UBX-18058360 - R01
Appendix
Page 18 of 21
D
Current consumption measurement
The current consumption of SARA-G450 module can be measured on the EVK-G45 by removing the
jumper socket from the Cellular VCC supply jumper (J404 on the EVB), described in
Figure 5
.
Cellular VCC supply jumper socket (J404)
to be removed for SARA-G450 module
current consumption measurements
Figure 5: Jumper socket to be removed for SARA-G450 module current consumption measurement
A suitable external digital multi-meter (as for example, the Agilent 34410A or 34411A) can be used for
current consumption measurements: in this case, the 3.8 V supply circuit on the EVB will supply the
SARA-G450 module mounted on the adapter board, with the digital multi-meter placed in series as
described in
Figure 6
.
SARA-G4
adapter board
SARA-G450
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
(J404)
VCC
Digital Multimeter
DCI
+ –
Figure 6: Block diagram of current consumption setup for SARA-G450 modules
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 the 3.8 V supply source for the SARA-G450 module mounted on the adapter board.
Declaration 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…).
Any changes or modification made to this equipment will void its compliance to the safety
requirements.
Maintenance, inspections and/or repairs of the EVK-G45 shall be performed by u-blox AG.
