
Telit EVK2 User Guide
1vv0300704 Rev.13- 2012/06/25
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page
22 of 149
5.
Power supply setting
The
EVK2
could be powered by different external sources, only one at time. The requested
setting is made inserting the proper jumper connectors in the right position as described in the
following paragraphs.
Be careful to the connections, even if every supply line is protected by a diode against “
polarity
reversing
” and by a 0
Ω
resistor against “
short circuiting
”.
5.1.
Fixed DC source
Connect a
+3,8V /
2A
fixed DC source to PL101 respecting the polarization; short
pin2 &
pin3 – PL104
and
pin1 & pin2- PL105
by
2 contacts jumper
connectors. No other jumpers
are needed.
Figure 5:
+3,8V fixed
source setting
PL107
PL103
P
L1
05
BATT
SO201
REG
PL106
3.8V
P
L1
04
+3,8V INPUT
PL101
SO101
PL102
5-
40
V
3_8DC.skd
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