CAL150 Technical Reference Manual Specifications A-1
APPENDIX
A
Specifications
The specifications contained in this chapter are subject
to change without notice. Please refer to calibration and
test results for data on a specific unit.
Standards Met
• ANSI S1.40-2006, Specifications and Verification Proce-
dures for Sound Calibrators, Class 2
• IEC 60942-2003, Class 2, Sound Calibrators
• IEC 61010-1:2001, Safety requirements for electrical
equipment for measurement, control, and laboratory use
- Part 1 General Requirements
• IEC 61326-1:2005, Electrical equipment for measure-
ment, control, and laboratory use - EMC requirements
Technical Specifications
Calibration sound pressure level
(factory specification)
Calibration sound pressure level after one
year
94.0 dB and 114.0 dB ±0.3 dB SPL
re: 20Pa @ 101.3 kPa, 23º C and 50 % RH
(114.0 dB is the principal sound pressure level)
114.0 dB ± 0.3 dB under same conditions as above
Equivalent free-field level -0.12 dB for 1/2” free-field microphones
Frequency 1 kHz ± 1%
Harmonic distortion < 2 %
Stability after pressing On ± 0.1 dB after 2 seconds
Minimum stabilizing time after the
microphone and calibrator are coupled
together
10 seconds
Static pressure range 65 kPa to 108 kPa, SPL variation will be < ± 0.4 dB
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