The PN7220 project has excessive card reading performance; the V-card reading range is ≥150mm. Adjusting ARC and DGRM_BBA only reduces the reading range to around 110mm. Due to the need to pass EMVCo RR2, the maximum voltage can currently only be reduced to 4.5V.
Are there any other parameters that can reduce card reader performance? Thank you.
Hello @mark_tang
Adjust the antenna matching impedance to 20~22 Ω. This requires hardware modification; try again.
The complete version was not released to us by this client.
Hello @mark_tang
Another option is to adjust the matching impedance to 20~21 Ω.
Hello @mark_tang
The target current can be adjusted to 200mA, give it a try!
Furthermore, the schematic diagram does not only show the antenna section, but also the complete 7220 design.
The target current is 240mA. The attached file is the debugged XML file.
I noticed that the latest Cockpit allows setting different target currents (shared across tables). Will this affect the EMVCo RR2 test, or does the system have a recognition mechanism that automatically switches between them?
Hello @mark_tang
Could you please provide the DPC table, the antenna smitch chart, and the schematic diagram?
What is the target? What is the current target?
DPC has been debugged, but it doesn't help reduce card reader performance. Currently, client requirements stipulate performance cannot exceed 75mm, and it's currently exceeding that by 50%.
Hello @mark_tang
Also, you can enable and calibratie DPC, please try.
Hello @mark_tang
it's normal.