The FireFly® high-voltage optically isolated probe delivers industry-leading performance: it accurately resolves high-bandwidth, low-level differential signals in the presence of large common-mode voltages, with exceptional common-mode rejection across the full bandwidth. With best-in-class >1.5 GHz bandwidth, a wide differential input range, unmatched CMRR of up to >180 dB (100 million-to-1 rejection) and 60 kV common-mode voltage, FireFly® is the ideal measurement solution for GaN and SiC device characterization and system-level design and development.

PMK's new optically isolated interface and unique compact angled probe design (patent pending) are the key attributes that set FireFly® apart from other solutions on the market, delivering highly stable and accurate measurements over a wide temperature range and easy access to measurement points in tight spaces.

The compact angled probe design allows the use of shorter tip cables, resulting in higher signal fidelity and reduced stress on the measurement test point. FireFly® offers a broad selection of probe tip connections and accessories for reliable, hands-free, high-fidelity connection to measurement points. With industry-standard MMCX and square pin connections, FireFly® connects easily to test boards already designed with these test points. The FireFly® probe is powered by an easily replaceable, rechargeable industry-standard 18650 battery and can run continuously for up to 30 hours at room temperature. FireFly features a universal BNC output connector and is compatible with any oscilloscope having a 50 Ω input impedance, or a 1 MΩ input impedance with a 50 Ω feed-through termination, allowing FireFly® to be used with any oscilloscope in the lab. For accurate deskew, the unique propagation delay of each probe must be measured and is added to each probe's label.

FireFly® can be controlled via the controls on the interface box or by remote control. The "PMK Probe Control" software lets users control the probe remotely from a computer and provides a graphical user interface. The software is free of charge and included with PMK's 2-channel and 4-channel power supplies PS-02 and PS-03, which are required to power the probe. All power supplies feature a USB interface and offer an optional LAN interface. The new 1-channel battery pack power supply AP-01 provides >8 hours of portable isolated operation, giving users flexibility in where they use the probe. The AP-01 powers the probe only and has no software remote control.

Calibrated to ISO17025 at delivery, or recalibrated on request.