EVK-NORA-W36 - User guide
UBX-22035800 - R01
Hardware descriptionHardware description
Page 14 of 18
C1-Public
3.6
Current sensing header
A single header is provided for measuring the current into the NORA-W36 power supply pins. Cut the
normally closed jumper, NC1, to enable use of J7.
Figure 12: Current measurement
After cutting NC1, place an ammeter or power analyzer in line with pins 2 and 3. Only the current
supplied to NORA-W36 through the
VDD
pins is measured. Current sunk by the GPIO pins is not
measured.
☞
If NC1 is cut, normal operation can be restored by either soldering across NC1, or by placing a
two-pin shunt across pins 2 and 3 of J7. The shunt has 0.635 mm (0.025 in) square post sockets
on 2.54 mm (0.1 in) centers. Shunt length is not critical.
4
⚠
Pin 1 of J7 is connected to ground.
4
Example shunt part number: Sullins SPC02SYAN
