Etymotic ER•200DW8 Personal Noise Dosimeter with Data Logging - Manual (Page 33)

33
Measurement Mode
NOTE: Exchange rate, criterion level and threshold level
determine how noise dose is defined and computed, and
will impact the dose results. The default settings correspond
to NIOSH (1998) recommendations, which are more
conservative (more protective) than the OSHA criteria.
NIOSH (default)
Exchange rate: 3 dB
Criterion level: 85 dB
Threshold level: 75 dB
OSHA
Exchange rate: 5 dB
Criterion level: 90 dB
Threshold level: 80 dB
Custom
Exchange rate: 3, 4 or 5 dB
Criterion level: 70 to 95 dB, in 1-dB increments
Threshold level: 70 to 90 dB, in 1-dB increments
The Setup Screen displays the factory default settings the
first time the dosimeter is used. Thereafter, stored settings
are displayed.