I use VDS1022 for some simple tasks but like to have isolation between PC and oscilloscope inputs to prevent USB port damage =)
I found that VDS1022 and VDS1022i have same hardware except two things: ADUM3160 and DCP020505U IC’s and pair of 27R resistors:
ADUM3160 – full speed(12Mb/s) isolation IC.
DCP020505U – 2W is 5V to 5V DC-DC converter.
If you like to convert your VDS1022 to VDS1022I do the following:
- Remove R104-R109
- Replace R99,R100 with 22-27R resistors
- Place ADUM3160 on U37 place
- Place DCP020505U on U9 place
All things done!
I was unable to buy DCP020505U for a reasonable price from local supplier thats why i use DCP020505P for my VDS1022 MOD:
You can also use any other similar DC-DC instead of DCP020505
Great EEVblog thread about VDS1022/VDS1022I difference
https://www.eevblog.com/forum/testgear/owon-vds1022i-quick-teardown-(versus-the-hantek-6022be)/
Thank you for reading =)
M.S