CAL150 Technical Reference Manual Introduction 1-1
CHAPTER
1
Introduction
This chapter describes the features and accessories of the
Larson Davis CAL150 Sound Level Calibrator.
Features
The Larson Davis CAL150 Sound Level Calibrator is a
battery-operated precision microphone calibrator used for
the calibration of sound level meters and other sound
measurement equipment. It can provide an output level of
either 94.0 or 114.0 dB (switch-selectable) at a frequency of
1 kHz. It has been designed for both field and laboratory use
and the accuracy has been calibrated to a reference traceable
to the National Institute of Standards and Technology.
The Larson Davis CAL150 Sound Level Calibrator has the
following features:
• Class 2 sound level calibrator
• Dual output levels: 94.0 dB and 114.0 dB (user
selectable)
• Output frequency 1 kHz
• Internal batteries for portable operation
• Opening for use with 1/2” microphones
Accessories
• Adaptor ADP031 included for use with 3/8”
microphones
• Adaptor ADP024 available for use with 1/4” microphone
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