Measurement range
The measurement range depends on the selected transducer.
Using a standard microphone (Nor1225), the primary indicator range for compliance with IEC60651 type 1 is
24 dB to 117 dB. For compliance with IEC 60804 type 1, the linearity range is 24 to 137 dB, and the
pulse range 24 dB to 140 dB, respectively. The linear operating range is identical to the total range.
Measurement range:
A-weighted levels
C-weighted levels
Z-weighted levels
Z-wide-weighted levels
C-weighted peak levels