Audio Analyzer UPA4 is a compact instrument allowing all essential audio parameters to be measured at balanced and unbalanced analog audio interfaces. Due to its large variety of options it can be optimally adapted to the specific application. The great number of filters available makes the UPA4 suitable for numerous audio measurements. Due to its remote-control capability (IEC 625/IEEE 488) and high measurement speed, a major application of UPA4 is in automated testing of audio components in series production. Features Psophometric measurements to DIN, CCIR, CCITT Broadband level meter with true RMS reading or quasi-peak reading Simultaneous measurement of level and frequency DC voltage measurements Combined digital and analog displays for all functions Synthesizer generator with low distortion and floating outputs (option) Switch-selectable generator output impedance Fully automatic distortion meter for measurement of total and selective harmonic distortion or SINAD (option) Wow and flutter meter to DIN, CCIR, IEC, NAB, JIS with amplitude variation meter (option) Frequency counter and phase meter Nonvolatile memory for 50 instrument setups