EVK-L2 - User Guide
UBX-14000422 - R10
Appendix
Page 28 of 30
F.2
EVK-L2 for TOBY-L2 modules, product versions "02"/ "62" onwards
Current consumption of TOBY-L2 series module product versions "02" / "62" onwards can be measured on the
EVK-L2 by removing 0R jumpers
R118
and
R115
mounted on the cellular adapter board, described in Figure 8.
0R jumpers R118 and R115
to be removed for
TOBY-L2 module product versions "02" / "62" onwards
current consumption measurements
Figure 8: 0R jumpers to be removed for TOBY-L2 modules product versions "02" / "62" onwards 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 9.
TOBY-L2 adapter board
TOBY-L2
Cellular
module
42
-p
in
DI
L
B
2B
c
o
n
n
ec
to
rs
EVB-WL3
Step - Down
Main power switch
(SW400)
12 V
(J400)
3.8 V
VCC
Digital Multimeter
DCI
+ –
VCC jumper
(J404)
R118
R115
jumpers
Figure 9: Block diagram of current consumption setup for TOBY-L2 modules product versions "02" / "62" onwards
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.
