Sierra Wireless WISMO Series, User Manual, Page: 28 / 76

WA_DEV_W218_UGD_004
Rev 001 Page 28 of 75
WISMO Series Development Kit User
Guide
It is possible to separate the power supply for the WISMO Series Socket-Up Board (“VBATT” via
TP601) and the power supply for the peripherals (“VBAT” via TP602) by unsoldering J605. Current
measurement is therefore possible for the WISMO Series Development Kit and for the WISMO218 or
the WISMO228 (refer to § 7 Current Consumption Measurement for more information).
Figure 9. Zoom on “J605”
LED Signalization (“VBAT”)
The “VBAT” indicator is a green LED and it indicates the presence of a power supply at J600 or J604.
Both the WISMO218 and the WISMO228 and peripherals are powered by this power source when
J605 is soldered. If J605 is unsoldered, an extra external power supply should be connected to “VBAT”
for the WISMO Series Development Kit. It is recommended to always use both VBATT and VBAT
simultaneously.
Figure 10. LED Signalization of “VBAT”
Table 2. LED of “VBAT”
LED VBATT VBAT
Light ON ON ON
Light OFF Can be ON OFF
External Supply
The J600 connector has three pins:
• J600: Pins 1-2 are used to plug the power supply.
•
J600: Pins 2-3 are used to plug in BAT-TEMP. (Refer to the discussion on BAT-TEMP for more
information.)
J605
Green LED