I have magnetic scales running which initially showed no output on TouchDRO (never tried the scope), the fix was easy.
Bought some Delos quadrature glass and magnetic scales, very good quality but when connecting be aware that 0V and GND on the scale are not the same so you need to connect the board GND to scale 0V to get a reading. No idea what R stands for.
Delos DP9 pins
1 A-
2 0V
3 B-
4 GND
5 R-
6 A
7 5V
8 B
9 R
https://forum.yuriystoys.com/showthread.php?tid=333
Bought some Delos quadrature glass and magnetic scales, very good quality but when connecting be aware that 0V and GND on the scale are not the same so you need to connect the board GND to scale 0V to get a reading. No idea what R stands for.
Delos DP9 pins
1 A-
2 0V
3 B-
4 GND
5 R-
6 A
7 5V
8 B
9 R
https://forum.yuriystoys.com/showthread.php?tid=333