Ok some people are reporting problems about the hw58 models.
I recieved my ds1052E a couple of weeks ago, (at this point the first
detected sp1 said ok for the hack before a big red retraction
.)
Anyhoo I went ahead and modified my scope from 2.04sp1 immediately.
and very happy with the results (only been doing a bit of slow speed pic stuff for now
and been bloomin' impressed by this little marvel).
I decided to search for 2.04SP1 firmware as I'd like to have that back just because it was there initially,
yeah I'm a bit wierd like that
.
Anyway after reading reports of problems with SP1 I checked and yes I have hw ver 58
.
Oddly so far my scope seems reasonably good, pretty clean signals and no problem at low frequency.
until I get around 2 - 3.5Mhz where I seem to get around up to +-250mv of noise on a 3.5V sine wave.
but only if I zoom into 1 cycle and the 1Gsa sample rate kicks in, no noise at all on the 500Msa
[Real time Sampling Normal aquisition]
(maximum speed of 3.5Mhz I've tested so far and I am pushing my cheapy maxim function generator to it's max).
anyhow any noise dissapears immediately and clean sharp signals as it should on average acquisition at 16 samples.
I assumed this was about right and working as it should.
[mind you I didn't expect much from a very cheap DSO in the first place and i'm still in awe of the wee beastie].
some posts show that on no signal they get a lot of noise, mines reasonably clear
(vpp of around 480uv-560uv no attached probe, mind you with all the wifi and junk all over the house
constantly running I expected way more interferance).
Looking at the posts though there is an extra step I took.
step 1 :-
press :- Storage, change waveform to factory, select load, as RIGOL recommend in the pdf manual.
essentally cleaning out user settings I don't know if it does anything apart from that.
step 2 :- Now re-run self cal (remember to start it going with RUN/STOP before heading off for a coffe, gosh i did swear at that one
).
If that solves or improves any issues for anyone here or if it does nothing for you then post back.