Fisher XLT-30 manual Operating Instructions

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OPERATING INSTRUCTIONS

Use of the Notch Filter

Occasionally, you may come across a sound that may be masking or covering your ability to adequately hear any leaks. This may be caused by nearby motors, fans, or many other annoyances. (Unfortunately, the most common are sounds caused by automobiles and traffic). The XLT-30 has a Notch, or reject feature, that will assist in eliminating that sound from your frequency range.

Depress the NOTCH pad, and use the ARROW pads to move the cursor to the point where the annoying sound is eliminated or at its weakest. Depress the RESUME pad to set the Notch function. (Hint: Depress the FILTER pad to go directly to the FILTER mode. Now you can choose the type of Filter you wish to use AND still have the annoying sound Notched).

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Contents XLT-30 Contents Introduction Control Box Instrument SETBig Foot Probe Hydrophonic Cylinder ProbeCarrying Strap/Housing Mounting Bracket HeadphonesLittle Foot Assembly Accessory Sound RodsControl Panel HOLD/MUTE Arrow KeysResume Operating Instructions Set UpOperating Instructions Accessories SpecificationsPage A L I T Y Fisher Research Laboratory