Performa01: Thank you for the welcome!, This is my first time writing on the forum though I've been reading and searching on here for a while. I'm a computer engineer trying to build back up my analog skills and this forum has been the best resource I've seen on line for building up practical skills and is a great expansion to all the youtube videos out there.
exe: thanks for the recommendation of self-cal after 30min of warmup, I neglected to wait enough time to warmup, my digital mind overlooks these things.
tautech: I did the firmware upgrade, it came shipped with 6.1.25 R2 and I just upgraded last night to 6.1.26 and then did a self-cal after waiting 30min.
rf-loop: I really appreciate the thorough details and the explanation of the band changes and the old issue between ch1 and ch2 on the 1202x-e, that's another thing for me to check, though my unit is an 1104x-e
I do have another question, and I really apologize if it seems like I'm hijacking a thread. I should probably just start another thread (let me know if I'm in the wrong). I'm just trying to put my scope through all the paces and see if I can find any issues/quirks before I'm committed to this unit. I just got the software and screenshots working, siglent could do a better job at describing where to get the driver and using the easyscope software. Now I just need to get the ethernet working.
Is it normal to have a 5 to 10mv offset in the AC coupling mode, no probe connected, x10 setting, 5mv vertical, all timebasese?
It is not normal (if all other things are normal) but before it can really say:
Just for sidenote:
Due to 10X setting your scope real offset is 0.5 - 1mV (1 - 2 division)
Probe multiplier setting in scope input menu do not change anything in front end. Only displayed level numbers change.
Have you done Self Cal after 30min (30min is really minimum)
And it need do so that nothing is connected to input BNC's (Nothing means that really nothing, example if you keep probe connected but probe is not connected to anything, it is error. Input BNC's need be empty and open (exept if you have BNC metal caps without center connection)
Also in Utility menu there is Quick-Cal. Keep it normally ON.
Is it really normal or not, it is more easy to answer if you follow next.
I will ask you do this next - exactly:1.
Independent of if you have previously done selfcal or not, do it now. Turn your scope on and wait
least over 30-45min (without notable environment temperature changes) (waiting time you can still use it if you like)
After continuously power on least 30-45min
disconnect all, if there is anything,
from the input terminals so input BNC's are just empty. 2.
Press Default button.
3.
Start SelfCal and leave it alone running it. During selfcal let it run alone without touching it (and specially do not touch inputs).
4.
After selfcal. Scope still running.
Check that Quick-Cal is On
5.
Still do not connect anything to input BNC's.
Then without any other changes do next things only.
Push Ch4 selection (channel turns on) and turn Vertical for 500uV/div. Do not adjust vertical position. Set BandWidth (BW) to 20M then do same for Ch3, then Ch2 and then Ch1. (and of course all they are now DC coupled and BW and ) If they are over each others or not just do not care and do not adjust anything)
Turn trigger level to top, 2.25mV.
6.
Do not keep your fingers or anything near inputs (and of course nothing connected)
Save screen image to USB
7.
After 6. then do nothing else but push Ch4 selection and set CH4
coupling to AC, Then Ch3, then Ch2, then Ch1 (other things just stay still like step 5 and 6.)
Save screen image to USB
Show these both images.