Hi Nvidia Team,
I have a question on the power input of the Jetson Xavier developer kit. I try to find out the power consumption of the device. So I have used the INA Sensor to get the current values of the railways from CPU,GPU,CV,SYS5,DDRQ. I have summed them up like in the example below. For a power mode like 15W it is nearly accuratly 14-15W.
Now I wanted to find out if the measured power consumption is the same as the actual power from the outlet. And here is my question. I found a very big delta between those two. The power from the outlet was like 23W (in 15W Mode) while the INA Sensore reportet 14-15W. On a higher Watt-level it is similar. The power from the outlet in MAXN Mode was 50W while the INA Sensor geportet 39W. First a thought it could be a line loss by the power supply but since the power supply is a AC Adapter with efficiency level 6, the loss cant be over 0.100W in the area of 0-60W.
How can this difference between the power measurement from the outlet and the INA Sensor exist and is there a possibility to measure the power that enters the jetson at the power jack directly to find out how much power enters the jetson.
The example shows to different measures. It should show I used the INA Sensor.
Not summed up:
TIME; GPU_P; CPU_P; SOC_P; CV_; VDDRQ_P; SYS5V_P
Thanks for your answers.