
30
Specifi cations
Reference conditions
Ambient temperature
23°C
Static (atmospheric) pressure
101.325 kPa
Relative humidity 50% RH
Microphone effective load volume
960 mm
3
(total coupler volume 21245 mm
3
(representative value))
Nominal sound pressure level
114 dB
Specifi ed sound pressure level
As noted in supplied calibration chart (114.0 dB ±0.2 dB (at refer-
ence conditions))
Specifi ed sound pressure level tolerance limit
±0.15 dB
Sound pressure level stabilization interval
After power-on:
5 s or less
After microphone insertion: 30 s or less
Sound pressure level stability (short-term fl uctuations)
±0.05 dB (within rated ambient conditions for use)
(20 s, time weighting F (IEC 61672-1: 2002, JIS C 1509-1:2005))