With AGC=Off, measure the frequency of two equal sideband RMS voltages. In this example, the RMS voltage is approximately 280 mV. Make small CAL FIL adjustments until the average is close to the TONE frequency, 600 Hz in this example. This example is using an Oscilloscope FFT capability to measure the frequency. Spectrum analyzer programs or a frequency counter can also be used.
Using Frequency Counter
With AGC=Off, filter bandwidth can be plotted by measuring the AF output at several offset frequencies.
