Finaly,
I just strapped the grounds between the two PCB's, and now it does work fine.
The problem was due probably to a ground plane error in the multi-layer PCB.
Regards
Search found 2 matches
- Sat Jun 16, 2018 3:26 pm
- Forum: DSO Shell
- Topic: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]
- Replies: 13
- Views: 117909
- Sat Jun 16, 2018 7:25 am
- Forum: DSO Shell
- Topic: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]
- Replies: 13
- Views: 117909
Re: FAQ, Tips, and Troubleshooting [Updated Oct. 11, 2017]
Hello, After powering the DSO , the rotary encoder does not do any effect on the display. I checked the circuit according to the schematics (Fig. 6 upper in this section), and found all the connexions OK between J2 , R5-R6-R7 and DB0-DB1-DB3, BUT the grounding of the small PCB is not directly connec...