I don't own any Pico oscilloscope, I'm just considering buying one 4425 or some other automotive digital oscilloscope. A 2235 Tektronix, analogue, 100MHz oscilloscope is what I own. You should find a laboratory pulse generator so that you can connect your oscilloscope to it, just to check if there i...

Hi, have you ever used a similar but standalone oscilloscope to do the same measurements? I wonder if your notebook is able to supply the current asked by the used PC based oscilloscopes. The much higher sampling rate asks for much higher current. So, you can try using your scope with some other not...

Unfortunately, when it comes to internal combustion engines, there are a few indispensable things: pulses for injectors, and pulses for spark plugs on petrol engines. These very strong pulses have pretty steep edges so their harmonics cover a pretty wide frequency band. The average power is pretty l...

Thanks Ben, Electronics was my line of work for many years but I never worked in the automotive industry; controllers, software and such things weren't my cup of tea. What is worse, I almost haven't been into electronics for the last ten years for several reasons. Anyhow, vehicles have become pretty...

I wonder if the floating ground on the 4425 is the culprit. The input with a floating ground could be a nice antenna. The higher frequency and the longer wires, the better such antenna reception. A wider frequency band and the floating ground don't get along, especially in such environment as an OBD...

Thanks a lot!

Greetings to all,

I'm a guy from the Balkans who wants to take care about his vehicle properly so I started to learn about OBDII engines a year or a year and a half ago. Now I consider purchasing the 4425.

Regards

e2e4

Hi,
the maximum sampling rate is 100MS/s if either 3 or 4 channels are used.
Buffer memory is 250MS. Is 250MS buffer memory per channel or is it for all 4 channels altogether?
Thanks