Hantek 6022 AC mod
Hantek 6022 AC mod
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 firmware:
Circuit
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.
PCB
Back layer can be avoided especially in case of pcb milling.
Front side of the PCB
Back side of the PCB
BOM
| 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 |
Mounting
The pcb can be mounted on an unpopulated shield hole. The pin located at the center of the PCB is used to fix the PCB in place.
Mounting hole
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