Windrock 6400 - Ultrasonic Gain for Audio Playback; Fine-tuning Ultrasonic Gain

6400 Reference Manual
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6) Adjust the ultrasonic gain by accessing the Utilities function key and then selecting option 4 (Ultrasonic
gain).
7) Use the arrows on the analyzer to adjust the gain to the desired setting and then select the ENTER
(blue) button on the analyzer to save the setting.