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Wildlife Acoustics Ultrasonic Calibrator Quick Start Manual

For sm2bat+ and smx-us/ut microphones
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Ultrasonic Calibrator for SM2BAT+ and SMX-US/UT Microphones
Since ultrasound is beyond the range of human hearing, verifying proper system and microphone performance
can be a challenge. The Ultrasonic Calibrator allows testing of both the microphone performance and the full
SM2BAT+ recorder system performance.
The Calibrator has two modes of operation, "CALIBRATION" and "CHIRP". Calibration mode is used to test
the microphone unit itself at close range and the chirp mode is used to test the entire system at a greater
distance.

Calibrator mode:

To test the system, the Calibrator generates a calibrated 40kHz tone. The microphone is placed in the calibrator
fixture and a special mode is available on the SM2BAT+ to display the received signal level. This can be easily
compared to the microphone specification.
Install the microphone adapter by sliding it onto the base of the Calibrator. The adapter should be installed such
that the smaller diameter of the hole is nearer the toggle switches and ultrasonic transducer. The adapter will
work with the SMX-US or SMX-UT as shown below.
Wildlife Acoustics, Inc. ● 970 Sudbury Road ● Concord, MA 01742-4939 ● (978) 369-5225● (888) 733-0200
www.wildlifeacoustics.com
20130109

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Summary of Contents for Wildlife Acoustics Ultrasonic Calibrator

  • Page 1 Ultrasonic Calibrator for SM2BAT+ and SMX-US/UT Microphones Since ultrasound is beyond the range of human hearing, verifying proper system and microphone performance can be a challenge. The Ultrasonic Calibrator allows testing of both the microphone performance and the full SM2BAT+ recorder system performance.
  • Page 2 Coming soon! Chirp mode: For a test of the full SM2BAT+ system, the Ultrasonic Calibrator can emit loud ultrasonic signals to the SM2BAT+ while it is recording from some distance. These recordings can be analyzed to verify that the SM2BAT+ settings are appropriate and the system is functioning as expected.
  • Page 3 If convenient the microphone adapter can be removed from the Calibrator by sliding it off. WARNING: In “Chirp” mode, the Ultrasonic Calibrator emits a 40khz signal at over 100dB SPL. Prolonged exposure to high intensity ultrasonic signals may cause permanent hearing loss at audible frequencies.

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