I remember having this same problem. Please check that you have the latest Marcosin SYS file. See the sticky post on this thread which explains what you need.
Hi elfe111,
Thank you very much fir the links and information!
Pedro
Thanks for your excellent work on this build (v1.21). One minor bug that I have not been able to sort out.
When triggering from Chan A, on manual, down transition, 2ms per div, it works perfectly on full buffer mode, but when I switch to short buffer mode, it appears to trigger OK about one sweep in 3 or 4, and then free-run for the next 2 or 3 sweeps.
If you have any ideas where I might look in the code, I’m happy to try to sort it out, but I’m not sure where to look to start with.
Thanks again
Dave
Jerson, just to be sure, can you post a screenshot of your start screen? Mine looks like this http://seeedstudio.com/forum/download/file.php?id=1026
My DSO still suffer of the strange scerenshots…
Sure. Here it is.
thanks! looks like mine (except i use app v1.21)… hmmm why then is my screenshot function strange? did you use the fgpa version from seeed?
cheers
I have the latest FPGA - don’t remember the URL. However, to make it easy for you, this is what is loaded on my quad.
I see that most use SYS 1.50-1.6. My quad came with SYS 1.51.
Are there any known advantages for either version?
The DSO GCC APP is made to work with Marco’s SYS 1.50-1.6.
Other versions will mostly work but have issues, like wrong generator outputs.
Can you tell me please where can I find it?
Thanks,
Dan
Hi Dan13,
you find Marcos Software here:
<LINK_TEXT text=“http://sites.google.com/site/marcosinat … ronica/dso”>http://sites.google.com/site/marcosinatti/elettronica/dso</LINK_TEXT>
V1.6, V1.7 and V1.8 are at the bottom of the page (but the link to V1.6 does not seem to work anymore - but that is his site anyway)
so just klick here:
<LINK_TEXT text=“http://www.seeedstudio.com/forum/downlo … php?id=851”>http://www.seeedstudio.com/forum/download/file.php?id=851</LINK_TEXT>
just marco’s sys…
Thanks guys!
Just got my Quad the other day.
I’ve been testing it and compiling the source in prep for a project I have to finish soon.
Found the following what appears to be a bug with the code:
Triggering with Timebase at 0.5uS and rising edge never causes a trigger event.
Changing to negative edge triggered however works ok.
I have downloaded and installed the following:
1.50 SmTech 1.6
The latest source and also double checked that the Hex file does the same thing: (2.52+SmTech1.8+PMOS69 fixes)
Latest FPGA firmware
Feeling pretty ripped off however as the site I bought it off is still advertising:
4MHz is not 72MHz by any stretch of the imagination.
Glad others are however working on making it a usable product assuming the bandwidth limitation is not a problem.
Hello 
I want to update my DSO203 but really i am not sure what to do.
I have read the posts of this thread.
What i have understood (please explain if i am wrong) :
In order to have an APP compatible with a SYS i have to install :
Marco’s SYS 1.50-1.6
DSO203 GCC v1.21 APP
Concerning how to install the DSO203 GC 1.21 APP there are instructions so i will follow them.
But what am i supposed to do with the files :
APP25116.hex
SYS25116.hex
CFG_FPGA.ADR
V222FPGA.BIN
?
Thanks,
Hello RemiD
I may not be the best person to answer your question, but, I’ll tell what I know
The files you mention are needed to upgrade the DSO203
SYS is the backbone of the DSO203.
APP communicates with SYS and gives the DSO its personality. So, different APPs you can find have different UIs.
CFG_FPGA.ADR and xxxFPGA.Bin are to be loaded in sequence (without powering off the dso) to the DSO203 as explained elsewhere on this site.
If you still have doubts remaining, ask here.
Easter greetings
Hi Jerson
Can you please tell me where i can find the step by step procedure on how to load the SYS files to the DSO203 ?
Thanks,
Sure RemiD
Start with this link
http://www.seeedstudio.com/wiki/DSO_Quad
And you will also find these helpful
<LINK_TEXT text=“http://www.seeedstudio.com/wiki/DSO_Qua … mmunity%29”>http://www.seeedstudio.com/wiki/DSO_Quad_Manual_(by_the_community)</LINK_TEXT>
// various source files if you choose to tinker with the code
ftp://shodtech.net/DSO_Quad/
Hope this helps
Jerson
You can also look here: <LINK_TEXT text=“http://hifiduino.wordpress.com/2011/04/ … art-guide/”>http://hifiduino.wordpress.com/2011/04/30/dso-quad-quick-start-guide/</LINK_TEXT>
Thanks for the links, but i see the explanations are for the DSO Quad and i have a DS203.
Can i use the same SYS and APP on the DS203 ?
Sorry for all these questions but i don’t want to rush and break the device ! I hope you understand.
Thanks,