Radex Lupin, are 6000 hz enough?

lillo9546

Hi
I found a tool called Radex Lupin.
Its seems to be a light meter with a feature for PWM
I saw many youtubers have this, because is portable, and an all in one device.
The specs say it can detect until 6000 hz. Are 6000 hz enough to detect harmful pwm? Have anyone this tool at home?
The price is very good, about 120€, to me is nothing for a device that can change life positively
The cool fact of this tiny thing is that is portable and without wires it has a display thats show by percentage, and it also measure lux and light!
There are comparabile devices that i missed? Im not an expert 🙂
So
Should i buy it, or should i do one my self (i have zero clue)?

JTL

lillo9546 I think the advantage of something like this is that it's more portable, but in theory a oscilloscope is more accurate, but much less portable.

AGI From what I remember, the Iphone X and most AMOLEDs were flickering at 240 Hz. Not sure where they are at now

I think it's largely still the same

AGI I think the debate is still open, what the threshold which causes troubles to humans is, as individuals have different degrees of sensitivity.

Agreed

AGI

I would like to buy one to measure flicker of lamps. I believe flicker of fluorescent lighting is causing most of my problems right now. I measured 100KHz with an oscilloscope. I am not 100% sure I measured correctly, but I would say 6kHz may not be enough for my goals. Someone else will for sure answer with regard to phones. From what I remember, the Iphone X and most AMOLEDs were flickering at 240 Hz. Not sure where they are at now. I gave up with them because symptoms were scary, way beyond eyestrain. I think the debate is still open, what the threshold which causes troubles to humans is, as individuals have different degrees of sensitivity.

kokos1

Hello! I know this thread is a bit old, but can someone provide me some instructions how can I measure PWM with an oscilliscope?

Maxx

I find that the easiest and maybe cheapest way to measure PWM is to use a digital camera with 4000 or even 8000 shutter speed and take video with a fast lens, e.g. F 2.0 so there is enough light even when measuring quite dim screens.

I have been able to measure PWM in the several Khz with this method. Mathces what Notebookcheck.com meausres.
I see no reason to have an expensive oscilloscope.

Also for the older post - fluorescent light flicker either 120 or 100 Hz based on the electricity frequency. Fluorescent lights also dim and light slowlly in comparison toe LED, so the flicker is not really that abrubt.