Search found 50 matches

by borland
Tue Jul 05, 2016 7:50 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

I guess a hardware circuit could be how those advanced scopes are handling the DC offset function. Is it possible to set the ADC’s upper and lower reference voltages? I was thinking you might be able raise the lower reference voltage while still keeping the higher reference voltage above the signal ...
by borland
Mon Jul 04, 2016 12:27 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

WC, Great job on the latest update (v6.1). I really like Chart Mode now. On suggestions for added features..... It would be really nice to have a DC offset feature on CHA and CHB. This would allow adding or subtracting a fixed value of vertical offset in DC mode. This is a feature provided on more a...
by borland
Sun May 15, 2016 12:04 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: Hardware 2.82 FPGA configuration error

Thank you very much WC. Your advice was right. I went to my neighbour, who has a computer running windows 10. I uploaded FPGA_281.ADR, 281_FPGA.BIN and app1.hex from WC6.0. 5 minutes and the problem was solved. Bye Dida I realize you have HW2.82, but it looks like your problem was initiated using W...
by borland
Sun Apr 17, 2016 10:56 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

DK8HI,

The trigger LEV function is so commonly used, others with your hardware version and WC5.1 would have reported that weeks ago. Also doesn't sound like a mechanical switch problem.

Try reloading your SYS & WC5.1, one at a time, to see if that issue is resolved by a reload.
by borland
Tue Apr 05, 2016 10:24 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

What I would be curious to know though, is the difference, if any, between the ADC versions used in the 2 devices you tested. The schematic for HW 2.81 specifies a HWD9288 from Chengdu Sino (CSMT), which is what I had in my device. Another, earlier HW V2.70 device I have might also have had one of ...
by borland
Mon Feb 29, 2016 11:01 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

.....I would check it with a full scale waveform though just to be sure it doesn't show up at the top or bottom. Doesn't matter what voltage scale you're on, it's all the same to the ADC, it basically sees what you see on the screen. I have expanded the waveforms and attached screenshots for both d...
by borland
Fri Feb 26, 2016 1:19 pm
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

Wildcat, I was wondering which AD9288 spec from Analog Devices you replaced on your DSO. Was it another 40, or did you use a faster rated chip like the 80 or 100? Are they all 48 pin LQFP packaging. Also, I found this photo of an old pcb board with 2MB flash from an eBay seller. The photo seems to i...
by borland
Fri Feb 26, 2016 6:33 am
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

Wildcat,

I just tried WC5.1 w/FPGA W1.1 on a different HW2.81 device. Results on this second unit in two buffer modes are attached. Didn't try placing it the frig, just another room temperature test.
by borland
Thu Feb 25, 2016 12:48 pm
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

Yes, at faster buffer mode (blue) shows more pronounced.
by borland
Thu Feb 25, 2016 12:02 pm
Forum: DSO
Topic: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes)
Replies: 698
Views: 549047

Re: DSO203 GCC APP - Community Edition (2.51+SmTech1.8+Fixes

Wildcat, I noticed something similar, but erratic and not as pronounced. Hard to capture in a screen shot because the imperfections in the trace pattern move around and come and go. When I switch to the new blue buffer mode some more pronounced effects. Didn't try adjusting the room temperature. Thi...