Etymotic ER•200DW8 Personal Noise Dosimeter with Data Logging - Manual (Page 11)

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Normal Mode
Run Length: Programmable
(16 hours; 3 days; 5 days; 7 days)
Power ON
· Press and release the power button two times .
- The 12.5% (green) LED illuminates on the first press
- The 25% (green) LED illuminates on the second press
· Three LEDs (green, yellow and red) flash twice. Then
the 12.5% LED flashes, indicating the dosimeter is now
measuring and integrating sound levels.
Measurement Window
In Normal mode, dose values are obtained every 220 msec,
summed over a 3.75 minute interval and saved in
non-volatile memory every 3.75 minutes (16 times
per hour).
Measurement Period
The default measurement period is 16 hours. The current
dose is continually displayed by a flashing LED. At the
end of the measurement period three LEDs (green, yellow
and red) flash twice, indicating the measurement is
complete. The dosimeter automatically shuts off.
Dose is stored in the device memory and will be displayed
when the device is powered on in Status mode. Stored data
can also be downloaded to a PC.
Power OFF
· To shut off prior to automatic shutdown: press and hold
the power button for two seconds.
· Three LEDs (green, yellow and red) flash twice and the
device shuts off.