I can make it move up and down a little, but I want it off .
Why would I want to see that trace? It is just annoyance for me.
If it is there for a reason, then why do no other oscilloscopes have it?
Come on, just make a new firmware release that is fixed, please?
Im trying to figure the same thing too i set mine to off so at least its out of sight till its figured
What do you mean “set it to off”. Can you make the purple trace go away? even temporarily? How?
I find this tool really not great. Even for the low price, I’m regretting buying it…
Do you find the plugs connections not being very stable? I find that jiggling the input jack can really change the waveform…
Good news i think i got it sorted out i will post in a second after i refine what i just did
The ex is the last data trace recorded if you scroll down to the ex using the up and down arrows then once high lighted use the left and right arrows you can select off
Once you record a new trace that one is replaced
I can scroll down to EX but then I need to select either:
If I select Ext Refn then I can use the arrows to go though the displays:
Data
-Data
Imp+D
D-Imp
Imp-D
-Imp
If I select Ext Posi, then nothing happens
I cannot understand how to record a trace and load it.
Are you using a Nano V3??
Anyone found a fix for this?
It goes away after you save a new data file. Scroll down to ex and go left or right till you have selected off it will not show the trace again till you scroll over back to data. Its the factory sample file.
Thanks for the help, but I do not have “off” as an option on my Nano V3 … so I always have some annoying trace to confuse the display…
I’m very disappointed with this device…
When you turn on your nano what firmware number shows up maybe needs a reflash i have all the factory firmware just need to know what yours is sounds like maybe it has a demo version i had that happen to me when a flashed a bunk firmware. Does your nano have white buttons and were did you get it.
I don’t have it in front of me, but I believe it says version 4.0 on startup.
This is the one I bought: http://www.antratek.com/dso-nano-v3
white buttons, no sd card slot, probes of poor quality, and bad contact at prob plug…
If you have other firmware, I’d be interested.
Do you work at Seedstudio? How do you get firmware, then?
Thanks,
Bob
No just user like you if you look at the most recent posts i just posted under “another firmware question” i attached the v3 firmware 4.21 its the most recent. There were a few other updates after 4.0 but I think you should be able to go right to 4.21 I also attached the update v3 user manual that has the upgrade how too
Thanks! I downloaded it and will try to install it when I am home and have the nano in front of me.
Is there much chance of killing the nano with a firmware upgrade?
I really appreciate your help!
Ciao,
Bob
I had mine bricked and was able to bring it back with a reflash so should be no worries. The only thing we may have to do is try and install the versions in order of there release but i dont see that being a problem just jumping to the most recent. When you start it up holding the down on the key pad it should go into boot loader screen what number is on that screen should be 3.26d ?
I did the test and saw the the firmware is given as 3.22A !
Which I guess explains something?
Where are the instructions for uploading the firmware, please?
Thanks for all this help!
Ciao,
Bob
Well I did the upgrade, and now all I get is the black screen with the labels, no trace display and no controls work!
It’s dead…
Where can I get the older firmware, please?
Try them in the order i posted them starting with 4 then 411 and finally 420 only install one at a time then try it and if it dont work on to the next im going to add one last file try this one first acually its the ben f for the 3.22 boot loader it will be the best for functionality if it will take if not then try the factory ones. The files with 2 files need to both be installed one after another and make sure the file changes to the dry extension. Dont stress its will be solved 
BenF364_LIB353-1.zip (49.6 KB)
201V4_20.zip (39.3 KB)
201V4-11.zip (31.5 KB)
DS201V4.zip (41.2 KB)
Hi!
You are the MAN!!!
The BenF firmware seems to work! The trace is stable, and the buttons all work.
I’ll try some measurement later and let you know!
It’s been quite a struggle, but it’s starting to feel worth it
Thanks so much!
Ciao,
Bob
On the benf there are 2 files app and lib did you get them both on and you have to do both one at a time some have had problems trying to highlight both at the same time