Giga-tronics Model 8003 Precision Scalar Network Analyzer combines a 90 dB wide dynamic range with the accuracy and linearity of a power meter in a single instrument. The Model 8003 Precision Scalar Network Analyzer can make accurate, single sensor power measurements over a frequency range of 10 MHz to 40 GHz with a dynamic range of -70 to +20 dBm. This wide dynamic range results from our unique use of switched linear gain stages, with a maximum gain of more than 100 dB, rather than the log amplifiers typically used in scaler analyzers. In addition to wide dynamic range, our approach also delivers extremely accurate low level measurements all the way down to -70 dBm. The Model 8803 also incorporates a unique built-in power sweep calibrator that linearizes the sensor's diode response in the non-square-law region, from -30 to +20 dBm. The calibration system uses the inherent linearity and stability of an ovenized thermistor to accurately calibrate the high-speed diode sensors from 0 to 50°C, ambient.