Bluetooth Low Energy Current Consumption Measurements
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Document No. 002-14934 Rev. *C
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5.4
BCM9UMB Bluetooth/WLAN Motherboard Settings
The BCM9UMB bluetooth/wlan motherboard has to be configured prior to taking the measurements.
On the BCM9UMB, remove three jumpers on the topside of the board — J9, J10, and J31. Refer to
The normal power from VBAT to the daughterboard is disconnected by removing the jumper from J31. The exter-
nal power supply powers the rest of the BCM9UMB. Connect power analyzer to EXT2 and GND. Plug in power to
the BCM9UMB as normal and enable the power to the daughterboard from the power analyzer. The voltage from
the power analyzer should be 3.3V.
Refer to
for the power analyzer settings. Use the analyzer Data Logger mode to
measure the current consumption. Equivalent equipment can be used for measuring current consumption. Note
that VBAT is the supply for the daughterboard. Refer to the
BCM9UMB Hardware User Manual
for a full descrip-
tion of the motherboard.
Figure 4. BCM9UMB Jumpers
GND
3.3V
Remove Jumpers
