ADInstruments MA3300, Owner'S Manual

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A-M Systems, Inc.
131 Business Park Loop, P.O. Box 850 Carlsborg, Wa 98324
Telophone: 800-426-1306 * 360-683-8300 * FAX: 360-683-3525
E-mail: sales@a-msystems.com * Website: http://www.a-msystems.com
General Description
Instrument Features
The Model 3300 Audio Monitor is a high quality audio amplifier designed to transform
electrophysiological signals into sounds. This amplifier features a built-in 6-band audio
equalizer that enables the user to tailor the audio performance to their personal
satisfaction, a high-fidelity quality speaker, a dedicated notch filter designed to minimize
noise interference generated by power lines, a headphone jack, and an BNC line out jack
that enables the the Model 3300 to be used as another signal amplifier prior to
subsequent processing by other instruments.
The instrument can be placed on a lab bench with its built-in metal stand, or it can be
mounted in any industry standard equipment rack (with included rack-mounting hardware).
In addition, the instrument is shipped with it’s own desktop power supply.
It can be used in a number of research or teaching applications requiring the audio
reproduction of electrophysiological signals, such as such as nerve, muscle (EMG), EEG,
EKG, and ERG recordings.
The instrument is not intended for clinical measurements using humans.
Two input signals can be passed to the Model 3300. A toggle switch selects which of the
two signals will be amplified and processed by the 6-band equalizer. The Equalizer is a
tunable filter that can increase or decrease the gain of particular frequency ranges,
resulting in a pleasing sound quality produced at the speaker. The use of a set of
headphones (by utilizing the mini-headphone jack) will disable the internal audio speaker.
The volume control acts as a variable gain amplifier, and adjusts the volume of the
speaker output. The processed signal can be passed to an oscilloscope or other
instruments via the Signal Out BNC jack.