
MED ASSO C IAT E S I NC. ANL- 940 - 1 U L TR ASO NI C M I CRO PH ONE AND AMPL I FIE R
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DOC-262 Rev 1.0 Copyright © 2012
MED Associates, Inc.
CHAPTER 2
Hardware
The ANL-940-1 includes a Microphone and an Amplifier. A power supply is also included, which provides
a minimum of 12V, 500mA. The brand and type of power supply depends on the user’s country .
The ANL-940-1 Ultrasonic Microphone (Figure 2.1) is designed for sound waves in the 500Hz to 100KHz
range.
Figure 2.1 – ANL-940-1 Microphone with Exploded Views of Connector and Microphone
The amplifier on the ANL-940-1 is calibrated to provide a relatively flat frequency response for the
microphone (+/-4 dB from 500 Hz through 100KHz). It uses a 12V 500mA DC power and outputs the
signal to a BNC port.
Figure 2.2 – ANL-940-1 Microphone Amplifier
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