3M eg4 Marine Instruments User Manual


 
Appendix A
053-644, Rev H Page 52 eg4
52
Measurements
Types
Displayed Data and
status indicators
SPL, Average value (L
avg
or L
eq
), Maximum value (L
mx
), Minimum value (L
Mn
),
Peak Value (L
pk
), Exposure, Run Time, TWA, UL Time
Measurement parameters
Dosimeters
Two dosimeters at once (eg4), each with its own assignable profile (via
DMS only).
RMS Range
70 to 140 dB
RMS Weighting
A or C weighting
RMS Time Response
Fast or Slow
Exchange Rate (ER)
3 dB, 4 dB, or 5 dB
Peak Range
110 dB to 143 dB
Peak Weighting
C or Z weighting
Criterion Levels
70 to 90 dB in 1 dB increments
Threshold
70 to 90 db in 1 dB increments
Upper Limit (UL)
70 to 140 dB in 1 dB increments