hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
Hello there,
I just got one also about a week or two ago and have been using it almost daily on different things.
I was using it to analyze an automobile engine and battery. You can get a lot of information from looking across the battery not just the voltage or the charge voltage but also some mechanical info just from how the battery voltage changes.
I've also been using it on some microcontroller circuits to check timings and stuff like that.
It's good for general stuff but i dont think we can call it a "professional" scope it's more of a hobby scope unless you dont have to do things a more expensive scope can do.
One thing i miss is the RMS readings as this scope does not display any RMS value of the waveforms. I have a cheaper USB scope that shows that as well as FFT which this scope also does not have.
Luckily it has A-B and invert, which is often important when looking at two waveforms at the same time.
So overall i am looking at signals around 12 volts that can vary by about 100mv and also at digital logic signals from about 0v to about 4.6 volts and mainly just need to verify the timings and just make sure everything is working as expected.
For working with the car battery, i used a low pass filter to filter out some of the noise in the signal which made it easier to read.
I tested the bandwidth and it showed to be 24MHz not 40MHz. I suspected it would be lower, and after all it's just around $120 USD or so depending on where you buy it. I think it is worth that price, but of course i would want a better one even if i had to pay a little more.
The best thing is that the prices of the digital scopes have come down a lot in recent years. Back in the day the cheapest scope i could get was a CRT type and it was much, much larger and the price was $400 USD, and bandwidth only 20Mhz.