Features: * 10 Hz to 20 GHz * 11-digit display * Measures frequency, period, period average, ratio, totalize, and time interval * Built-in microprocessors provide math functions, including measurement scaling and offset * Automatic amplitude discrimination measures the frequency of the highest amplitude signal in a multi-signal environment * Sensitivity to -40 dBm ensures accurate measurement of low-energy signals * Fast acquisition time (60 ms in automatic, fast acquisition tracking mode; 20 ms in manual mode). 120 measurements per second over HP-IB.