u-blox XPLR-IOT-1, User Manual

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XPLR-IOT-1 - User guide
UBX-21035674 - R03 Platform description Page 21 of 42
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3.4.3.1 SARA-R5 power supply and current measurement
To measure the current flowing into SARA-R5 from the VBAT supply rail, cut jumper NC6 and place
an ammeter or power analyzer across J3, pins 2 and 3, as shown in
Figure 15 .
⚠
J3, pin 1, is connected to system ground.
Figure 15: SARA-R5 power supply and current measurement
Figure 14 shows the current measurement location and position of the nano SIM in SARA-R5. See
Table 3 for expected current measurements.
Figure 16: SARA-R5 module, nano SIM, and current measurement