Tektronix tdp1500 differential probe 1 5ghz tektronix tdp1500 p the tektronix tdp1500 is differential active probe that will provide truer signal reproduction and fidelity for high frequency measurements p p with ultra low input capacitance and versatile device under test connection capabilities the tektronix tdp1500 provides excellent high speed electrical and mechanical performance required for today s digital system designs p p the probe has been specifically designed for use and