Weighting networks
Simultaneous measurement of three weighting networks A, C and Z-weighting.
The Z-weighting network may either be set to Normal mode covering the frequency range from 6.3 Hz to 20 kHz,
or to Wide mode where the low frequency range is extended down to 0.4 Hz. The -0.5dB points for the two
versions of the Z-network are 10Hz and 1.6Hz respectively.
The weighting networks are defined in the IEC 61672-1 standard.