a) The declared mean A-weighted sound power level, Lwa,m is computed as the arithmetic average of the measured A-weighted sound power levels.
b) The declared mean A-weighted emmison sound pressure level, LpA,m is computed as the arithmetic average of the defined Operator postiion (C.4b)
c) The statistical adder for verification, KV is a factor to be added to the declared mean A-weighted sound power level, LWA,m, such that there will be a 95 % probability of acceptance, when using the verification procedures of ECMA-109, if no more than 6,5 % of the equipment in batch, has A-weighted sound power levels greater than (LWA,m + Kv).
d) Operating mode, max GPU stress in 25°C ambient.
Note 1 The quantity , LWA,c (formerly called LWAd) can be computed from the sum of LWA,m and KV.
Note 2 All measurements made in conformance with ECMA-74 and declared with ECMA-109
Note 3 dB, is the abbreviation for decibles
