Coaxial adapters enable the probe to act like a differential input channel for the oscilloscope which effectively doubles the number of differential signals a single oscilloscope can measure simultaneously. 30 GHz Bandwidth P7500 Tip Adapter. The probe and oscilloscope system will support up to 30 GHz of bandwidth when this adapter is used with the P75PST Performance Solder Tip. This adapter allows the P7630 probe to use existing Tektronix P7500 probe tips. The P7600 Series probe amplifiers have a 50 ? input. When combined with a P7500 probe tip, the probe turns into a passive Z0 style probe with 450 ? of differential input impedance. While Z0 probes can typically present a significant DC load to the device under test, the P7600 Series probes will minimize the effect of DC loading through the use of termination voltage adjustment.