EVK-L2 - User Guide
UBX-14000422 - R10
Appendix
Page 27 of 30
F
Current consumption measurement
F.1
EVK-L2 for TOBY-L2 modules, product version "01"
Current consumption of TOBY-L2 series modules, product version "01" can be measured on the EVK-L2 by
removing the jumper socket from the
Cellular VCC supply jumper
(J404 on the EVB), described in Figure 6.
Cellular VCC supply jumper socket (J404)
to be removed for
TOBY-L2 module product versions "01“
current consumption measurements
Figure 6: Jumper socket to be removed for TOBY-L2 modules product version "01" current 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 TOBY-L2 module
mounted on the adapter board, with the digital multi-meter placed in series as described in Figure 7.
TOBY-L2 adapter board
TOBY-L2
Cellular
module
42
-p
in
D
IL
B
2B
c
o
n
n
ec
to
rs
EVB-WL3
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC jumper
(J404)
VCC
Digital Multimeter
DCI
+ –
Figure 7: Block diagram of current consumption setup for TOBY-L2 modules product version "01"
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 3.8 V supply
source for the TOBY-L2 module mounted on the adapter board.
