• The input signal is the blue trace, output red trace.
• The input signal is taken from the input of the balanced signal attenuator, shown in above photo.
• The input signal level is the same for all measurements.
• The signal's frequency shown on the display is measured by the 'scope's frequency counter.
• The signal's output level shown on the display is measured by the 'scope's waveform measurement function.
• These are all single-shot measurements. Signal-averaged measurements would be cleaner and prettier.
• The "Flat" preamplifier output was used, since the RIAA filter would substantially attenuate any high frequency signal.

0.1 Hz, 36 volts peak to peak output

1 Hz, 36 volts peak to peak output

10 Hz, 36 volts peak to peak output

100 Hz, 36 volts peak to peak output

1 kHz, 36 volts peak to peak output

10 kHz, 36 volts peak to peak output

100 kHz, 36 volts peak to peak output

500 kHz, 36 volts peak to peak output

Links to other Seta L20 measurements

• RIAA accuracy
• Intermodulation distortion, 19 kHz:20 kHz
• Signal propagation delay measurement
• Frequency response to 24 MHz
• Small-signal square waves, 1 Hz to 1 MHz
• Large-signal square waves, 0.1 Hz to 1 MHz
• 1 kHz harmonic distortion and noise