IM7580A-2 Impedance Analyzer, 1 to 300MHzGreat for R&D applications and high volume production inspections Built to measure a frequency range of 1 to 300 MHz with a measurement time of 0. 5 ms Analyzer mode lets you perform frequency sweeps, level sweeps and time interval measurements Gauge if measured values fall inside a range defined by you by using the Comparator function Check the contact between a specimen and the measurement terminals to uncover a faulty or verify a good contact 0.