Tracker 2700, with SigAssist technology, tests analog and digital components and circuits, as well as passive devices found in telecom, computer, IT, and military systems. Variable 5 Vdc generator permits troubleshooting of SCRs, optical couplers, and other gate-fired devices in both on and off states. Integral LCD displays current/voltage signature and menu options. Tester offers 105 combinations of voltage, source resistance, and test frequency. Real-time numeric display of resistance, capacitance, power, and forward and reverse breakdown voltage helps user determine optimal test range.