Since the majority of electronic circuits these days operate in the digital domain for the most part, the purchase of a 'real' logic analyzer (or perhaps 'protocol analyzer' is a better description?) is becoming increasingly tempting. If you would like to keep it affordable then you will quickly arrive at a device that has a USB connection. But which one is handy, versatile and value for money? In the Elektor Labs we looked at the ScanaQuad series, made by the French company Ikalogic.