
APPENDIX B
Measurement Parameters
259
Special Parameters
•L
XIeq
(also called L
XIm
)
•L
YIeq
•L
AIeq
–L
Aeq
•L
AFTeq
(also called L
AFTm5
)
•L
AFTeq
–L
Aeq
• SIL (average of L
Zeq
octave band levels: 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz)
*
• PSIL (average of L
Zeq
octave band levels: 500 Hz, 1000 Hz and 2000 Hz)
*
• SIL3 (average of L
Zeq
octave band levels: 1000 Hz, 2000 Hz and 4000 Hz)
*
•L
Weq
(f1 – f2) (sum of power values for L
Weq
frequency bands from f1 Hz to f2 Hz)
*
Statistics to Calculate Percentile Levels and Std.Dev.
Low-frequency Parameters (requires Low Frequency Option BZ-7234)
•L
Geq
•L
G10max
•L
G10min
•L
Gpeak
•T
Gpeak
• #GPeaks (>xxx dB)
• #GPeaks (>137 dB)
• #GPeaks (>135 dB)
Weather Data (requires connection to a weather station; common to both channels in 2-channel
templates)
• Wind Dir. avg.
• Wind Dir. min.
• Wind Dir. max.
• Wind Speed avg.
• Wind Speed min.
• Wind Speed max.
• Amb. Temperature
• Amb. Humidity
• Amb. Pressure
• Amb. Rain Gauge
*. These parameters require license for BZ-7223 and measurement of spectra.
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