AML ezMEQ-500, Assembly Manual

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1 ] Before powering up the module, turn the “ Bias Adjust ” trimmer R22 fully clockwise (about 10 turns)
ezMEQ5-500 Calibration / Setup
2 ] Power up module, measure the DC voltage across resistor R27
[It should typically measure about 300-400 mV (after relay clicks)]
{If using a bench power supply, the current draw will be about 40-50mA}
4 ] Apply a signal of 0dBu (0.775mV RMS) @1kHz
[Ensure that the EQ is set to bypass (switch downwards)].
5 ] Measure the output signal, and adjust the “ Gain Adjust ” trimmer R21 until output measures 0dBu (0.775V RMS)
3 ] Slowly turn the “ Bias Adjust ” trimmer R22 counter-clockwise until the DC voltage now measures 1.1 Volts
{If using a bench power supply, the current draw will be about 90mA}