Simple pcb to add AC coupling to the Hantek 6022BE oscilloscope. Based on the widespread mod available here: https://github.com/OpenHantek/OpenHantek6022/blob/main/docs/HANTEK6022_AC_Modification.pdf
Compatible with the OpenHantek6022 project
When AC_A is high C1 is short so the signal is DC coupled. When AC_A is low C1 is open so the signal is AC coupled.
Back layer can be avoided especially in case of pcb milling.
| Reference | Value | Datasheet | Footprint | Qty |
|---|---|---|---|---|
| C1,C2 | 100n | ~ | Capacitor_SMD:C_0805_2012Metric | 2 |
| R1,R2,R3,R4 | 220 | ~ | Resistor_SMD:R_0805_2012Metric | 4 |
| U1,U2 | TLP175A | Datasheet | Package_SO:MFSOP6-4_4.4x3.6mm_P1.27mm | 2 |
The pcb can be mounted on an unpopulated shield hole
