Coin Cell Battery Holder B300 (30); Power Header J700 (29); Table 7. Power Header J901 Pinout - Lantronix Intrinsyc Open-Q 865XR SOM User Manual

To obtain power consumption measurements, the header is connected to a data acquisition unit (Keithley
2701 or similar) and the voltages on the VPH_PWR_SENSE_P/N pins are captured a few times a second
over the test period (typically 30 minutes). The SOM power consumption is then calculated as (where
Rsense = 5 milliohms):
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Use averaging to reduce noise.
Pin No Signal
1 VPH_PWR_SENSE_P
2 VPH_PWR_SENSE_N
3 GND
The SOM power consumption can be calculated by:

3.7.5 Coin Cell Battery Holder B300 (30)

The coin cell holder allows the user to use a coin cell for supplying power to the SOM VCOIN power
input. It is recommended that the Panasonic ML621 series rechargeable coin cell be used (not supplied
with the development kit). See item 30 in Figure 1 for the coin cell battery holder location on the 865XR
carrier board.

3.7.6 Power Header J700 (29)

The Power Header J700 provides access to various carrier board voltage rails. The pinout of the
connector is listed in table below. See item 29 in Figure 1 for the power header location on the 865XR
carrier board.
Open-Q 865XR SOM Development Kit User Guide
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Table 7. Power Header J901 Pinout

Description
VPH power positive current sense line
VPH power negative current sense line
System Ground
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3: Open-Q 865XR SOM Development Kit
− ������������ℎ
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