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.
Example:
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
1674726363;18845;3064;5058;0;2302;3514
1674726364;23984;2138;5650;0;2902;3793
1674726366;25196;2137;5647;0;2901;3793
1674726367;22475;2293;5501;0;2905;3753
Summed up:
TIME;Total_Power
1674726172.0; 32926.0
1674726173.0; 37969.0
1674726174.0; 39970.0
Thanks for your answers.
Patrick