The second generation QZFM sensor (Gen-2) is finally ready for release. In this upgrade, we focussed on mainly two things: (i) reducing the size and weight of the sensor, and (ii) improving manufacturability to support faster production speeds. Along the way, we squeezed out a little more sensitivity and extended the sensor tolerance to background magnetic fields from 50 nT to 200 nT. All other technical specifications of Gen-2 are similar or slightly improved over Gen-1.
For now, the Gen-2 sensor is backward compatible with Gen-1 electronics. We are currently working on a more compact version of the electronics controller (to be released in 2019) which will greatly simplify setup and installation for future high channel count systems.
The driving force behind Gen-2 design was the desire to help move MEG form factor closer to EEG. It was hard to imagine a sleek and comfortable MEG helmet could be designed using Gen-1 QZFM, which is why we worked really hard to develop Gen-2.
