NEC2
From JP1 Remotes Wiki
IRP notation: {38.0k,564}<1,-1|1,-3>(16,-8,D:8,S:8,F:8,~F:8,1,^108m)+
EFC translation: LSB comp
Pioneer is distinguished from NEC2 only by frequency. So if your learning system does not learn frequency accurately, it won't accurately distinguish Pioneer from NEC2. All Pioneer signals should have a device number in the range 160 to 175 and no subdevice. No NEC2 signal should fit those rules. So you usually can determine whether the decision (by frequency) was wrong by checking the device numbers.
