![]() Auto-shut off timer 8 - 10 minutes after ON button is pressed.Low Battery LED trigger battery voltage ![]() Signal Present LED trigger voltage 750mVrms.Guaranteed operating range of input signal is 1.2Vrms – 125Vrms.Distortion Detection trigger level > 1.0% Harmonic Distortion.The Distortion Detector’s circuitry is 100% analog.Should the harness become damaged it is easily replaceable or repairable in the field.It makes it pretty easy to measure the output of a headunit directly, if you choose to do so.We also chose an RCA input connector for a few reasons: Isolating the DD1-1 from the vehicle’s electrical system for power, guarantees that it will only measure what it is supposed to measure the audio signal, not noise in the charging system.We have chosen a 9V battery as a power source for a few reasons: If treated as such it should provide you with many years of reliable service. When you pick up the DD-1, know that you are holding a precision piece of equipment.It can also be useful for detecting distortion in the audio signal caused by poorly designed or malfunctioning audio equipment. The purpose of this tool is to enable the installer to set the gain of an audio amplifier to match the source unit’s output level, accurately and quickly. The purpose and benefit of the D’Amore Engineering / SMD Distortion Detector.
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