I am quite pleased with my new RPL HD Monitor. It is well designed, and it does what it was intended to do.
However, the documenation is lacking. In trying to determine the power requirements for a non-Power-Delivery USB type-A power supply, I discovered that there is almost a factor of 2 difference in powering the monitor from a non-PD power supply (4.1 watts) verse a RPI-5B type USB-A port (2.3 watts). The brightness is at 60% and the sound at 50% in both cases.
How is the monitor detecting that is being powered from a RPi-5B USB type-A Port and not a USB type-A Power Supply? What is being cut off inside the monitor when it detects this?
The power was also 4.1 watts when using a USB-C Power Delivery compliant power supply and adjusting the brightness to 60% and sound to 50% with the back buttons.
All of my monitor measurements can be veiwed at: https://www.electrical-forensics.com/Li ... or_HD.html
Ray Franco, PhD., PE
Electrical & Electronics Engineer
However, the documenation is lacking. In trying to determine the power requirements for a non-Power-Delivery USB type-A power supply, I discovered that there is almost a factor of 2 difference in powering the monitor from a non-PD power supply (4.1 watts) verse a RPI-5B type USB-A port (2.3 watts). The brightness is at 60% and the sound at 50% in both cases.
How is the monitor detecting that is being powered from a RPi-5B USB type-A Port and not a USB type-A Power Supply? What is being cut off inside the monitor when it detects this?
The power was also 4.1 watts when using a USB-C Power Delivery compliant power supply and adjusting the brightness to 60% and sound to 50% with the back buttons.
All of my monitor measurements can be veiwed at: https://www.electrical-forensics.com/Li ... or_HD.html
Ray Franco, PhD., PE
Electrical & Electronics Engineer
Statistics: Posted by rayfranco — Mon Dec 23, 2024 6:15 pm — Replies 0 — Views 17