Quectel LC76G Series User Manual

GNSS Module Series
LC76G_Series_EVB_User_Guide 27 / 33
For LC76G (AB, PA), pull out the V_BACK_3V3 jumper cap (J205). Then, ensure the positive pole of the
power consumption meter is connected to pin 2 (with arrow silkscreen) of J205, and the negative pole is
connected to GND.
Power
Consumption
Meter
GND
V_BCKP
Figure 16: Measured with Power Consumption Meter for LC76G (AB, PA)
For LC76G (PB), pull out the V_BACK jumper cap (J207). Then, ensure the positive pole of the power
consumption meter is connected to pin 2 (without arrow silkscreen) of J207, and the negative pole is
connected to GND.
Power
Consumption
Meter
GND
V_BCKP
Figure
17: Measured with Power Consumption Meter for LC76G (PB)
Step 2: Switch on the power supply (S201) of the module and read the power consumption meter.
1. Adjust the current resolution when using the power consumption meter.
2. The power value can be calculated according to the following formula: P = V
Supply
× I
Test
.
3. When measuring the V_BCKP power consumption in Backup mode, ensure that the module has
entered Backup mode, and then remove the jumper cap of VCC_MODULE (J102) to cut off the power
supply of VCC. For more information about the way to enter/exit Backup mode, see document [1]
hardware design.
NOTE

Quectel LC76G Series Specifications

General

Brand	Quectel
Model	LC76G Series
Category	Motherboard
Language	English