3M AcoustiCal AC-300 User Manual - Specifications
5
Specifications
AcoustiCal User Manual
Specifications
Conformance standards
ANSI S1.40-1983 (R2006): Specifications and Verification Procedures for Sound Calibrators
IEC 60942 (2003-01): Electroacoustics, Sound Calibrators
CE, RoHS, WEEE, C-Tick
Physical characteristics
Size
(Length x Width x Thickness)
Weight
10 cm x 5.8 cm x 4.6 cm
3.9” x 2.3” x 1.8”
0.17 kg (6oz)
Outputs
Frequency
251.2 Hz and 1000.0 Hz, +/- 0.5%
with expanded
uncertainty in environmental conditions
Sound pressure level
114.0 dB re 20
μ
PA (1 Pa = 1 N/m
2
)
Sound pressure level accuracy
+/- 0.4 dB with expanded uncertainty in the reference
environment (initial difference)
+/- 0.4 dB with expanded uncertainty in the operating
environmental conditions, added to initial difference
Variation in output due to power
Less than +/- 0.1 dB
Reference environmental conditions
Temperature range
20°C to 26°C (68 °F to 79°F)
Pressure range
97kPa to 105kPa (29 to 31 inches of Hg)
Relative humidity range
40% to 65% humidity
Large temperature settling time
about 1 min/ °C (approximately 30 sec/°F)
Operating environmental conditions
Temperature range
-10°C to 50 °C (14°F to 122°F)
Pressure range
65kPa to 108kPa (19 to 32 inches of Hg)
Approximate 3500m to -600m elevation relative to sea
level (11500ft to -2000ft).
Relative humidity range
10% to 90%, non-condensing
Stabilization
•
Stabilization time after powering the calibrator on and coupling to a microphone is 10
seconds.
Principal
•
The principal sound pressure level is 114 dB.
•
The principal frequency is 1 kHz
Distortion
Less than 3% (all harmonics below 30.5 dB) within temperature and humidity at either
operating frequencies, unless “overload” is showing.