Interference Measurement in Touch Systems Gets Easier with the ARGON PCAP Controller
When it comes to the integration of Projected Capacitive (PCAP) touchscreens, sensitivity to radio frequency interference (RFI) and electromagnetic interference (EMI) turns out to be a major challenge. This generally happens because PCAP touchscreens need to work with radio frequency emissions. LCDs, power supplies, and backlighting, can generate electrical noise. As a result, EMI/RFI can interfere with the detection of touch events in PCAP touch screens, causing false touches and failed touch screen responses. Manufacturers use firmware and hardware to avoid interference by RFI and EMI in PCAP touchscreens by switching operating frequencies for instance. Basically, standard PCAP touch controllers detect changes in capacitance to determine touch positions, so PCAP touch sensors need to resist interference to avoid false signals. This is where A D Metro’s ARGON PCAP controller supersedes standard controllers with its advanced features facilitating simplified integration, without needi