Standalone Horn Analyzer and Amplitude Meter. The Master Tuner 4000 works with 128 bit synthesizer for the best possible accuracy. The Master Tuner 4000 is able to measure serial or / and parallel resonant frequency. The tuning procedure is fully automatic. You only need to specify the range to be scanned. For example 19.000 kHz 21.000 kHz. The Master Tuner 4000 will display all resonate frequency together with its impendence value. With an external Sensor you will get an Amplitude meter with a resolution of 0.1um. All measured data can be sent to a PC or Printer by RS 232.