The Krohn-Hite Model 6900B is the first and only fully Automatic Distortion Analyzer to provide an easy solution to your distortion and AC voltage measurements over the frequency range from 5Hz to 1MHz.

EASE OF OPERATION

Compare the ease of operation of the 6900B to any other distortion analyzer. The 6900B requires only an input signal. Auto frequency nulling, auto level setting and auto-ranging of the digital meter automatically displays the total harmonic distortion (THD). The 6900B measures THD from typically 3Hz to an unprecedented 1MHz and input levels from 100mV rms to 130V rms. Ultra-low distortion can be measured with a resolution of 0.001%. Measurements can be made in less than 3 seconds from 50Hz to 1MHz.

FILTERS

Three switch-selectable filters are provided. A 400Hz high-pass to reduce the effects of hum, 30kHz and 80kHz low-pass to reduce the effects of high frequency noise. An internal low-pass tracking filter is automatically activated at distortion levels below 0.1%.

AC VOLTMETER

As an ac voltmeter, the 6900B measures rms voltage from typically 3Hz to 1MHz at input levels from 10mV to 130V with an accuracy of 2%. A 3 digit auto-ranging display provides 1mV resolution.

ADDITIONAL FEATURES

The Model 6900B provides a distortion output signal which is the input signal after the fundamental is removed. This distortion signal can be used for additional analysis with an oscilloscope or spectrum analyzer. An analog output provides a dc voltage proportional to the distortion signal. An ultra-low distortion (<.003%) 1kHz sinewave oscillator can be used as a source for checking linearity of components and system distortion characteristics. An optional BCD output is available, making the 6900B very useful in an automatic test system. This fully automatic distortion analyzer is ideal for both precision laboratory measurements and routine production testing. It provides faster error free measurements for the unskilled operator.