Aethlabs microAeth MA200 Operating Manual page 17

5.7.3.3. Date/Time
The microAeth Manager displays the current date, time, and timezone offset of the microAeth. Click the
'Time options' button to show the 'Change time options' window to modify date and time settings.
5.7.3.3.1. Timezone offset
The timezone offset dropdown and 'Set timezone offest' button in the 'Change time options' window of
the microAeth Manager (click the 'Time options' button on the main application window), can be used
to select and set a timezone offset from GMT to be used as part of the ISO 8601 time and date format
in the instrument and recorded with instrument measurement data. Select the desired value from the
dropdown and click the button 'Set timezone offset' to save. To cancel, click the red 'x' in the top right
of the window.
5.7.3.4. Memory
The microAeth Manager displays the percentage of memory available in the microAeth.
5.7.3.5. Firmware
The microAeth Manager displays the operating system firmware version running on the microAeth.
5.7.3.6. Flow setpoint
The flow setpoint dropdown can be used to select a sampling flow setpoint of 50, 100, or 150 ml/min.
Select the desired value from the dropdown and click the checkmark to save and the 'x' to cancel.
5.7.3.7. Timebase
The timebase dropdown can be used to select the measurement integrating time of 1, 5, 10, 30, 60, or
300 second(s). Select the desired value from the dropdown and click the checkmark to save and the 'x' to
cancel.
5.7.3.8. Wavelengths
The wavelengths dropdown can be used to select the measurement wavelength(s) used for particle
measurements. Select the desired value from the dropdown and click the checkmark to save and the 'x'
to cancel.
1 Wavelength: IR (880 nm)
2 Wavelengths: IR (880 nm), UV (375 nm)
5 Wavelengths: IR (880 nm), Red (625 nm), Green (528 nm), Blue (470 nm), UV (375 nm)
5.7.3.9. Auto restart sampling
The auto restart sampling toggle switch can be used to turn auto restart sampling on or off.
5.7.3.10. GPS
The GPS toggle switch can be used to turn GPS recording on or off.
5.7.3.11. Serial data streaming
The serial data streaming toggle switch can be used to turn data streaming from the serial port on or off.
5.7.3.11.1. Serial data streaming output format
The serial data streaming output format dropdown can be used to select the serial data streaming
output format when serial data streaming is turned on. Select the desired value from the dropdown and
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click the checkmark to save and the 'x' to cancel.
5.7.3.12. Tape advance ATN threshold
The tape advance ATN threshold field can be used to enter the attenuation (ATN) threshold integer value
of 1 to 100 that will trigger an automatic tape advance to a new filter sampling location during a sampling
and measurement period. The attenuation (ATN) threshold value will trigger a tape advance when the first
of the wavelength measurements reaches this threshold. Enter the desired value into the field and click
the checkmark to save and the 'x' to cancel.
Note: The lowest wavelength light source enabled will typically trigger the attenuation (ATN) tape
advance.
5.7.4. Data Sessions Management in the microAeth Manager
Management of data both stored on the microAeth and data stored in the microAeth Manager local
database can be completed through the Manage data window of the microAeth Manager. Data is
downloaded from the instrument via the USB port ans is stored in the microAeth Manager local database.
The downloaded data is divided into data sessions in the microAeth Manager local database based on
previous sampling and measurements completed with the instrument. A data session is created when
the instrument starts sampling and measurements and the data session is closed when the instrument
sampling and measurements are stopped. The downloaded data sessions can then be exported to one .csv
file per session using the 'Data sessions in application' section of the Manage data window. Individual or
multiple data sessions can be selected and exported. When exporting long data sessions that span multiple
calendar days, the user can select to have the exported data session files split into multiple files based on
the calendar days of that session.
Data session files are exported to a folder named with the instrument serial number (MAxxx-xxxx) in the
directory shown at the bottom of the Manage data window below the 'Export selected sessions' button and
to the right of the text 'Data file export location:' The data file export directory is located in the computer
operating system user directory '/Documents/AethLabs_microAeth_Manager_Data'.
Session data files are exported as .csv files with the following naming system:
MAxxx-xxxx_Szzzz_yymmddhhmmss
xxx-xxxx is the serial number of the instrument
zzzz is the session ID number
yymmddhhmmss is the year, month, day, hour, minute, and second of when the session started
Session data files that are split into multiple files based on the calendar days of that session are exported
as .csv files with the following naming system:
MAxxx-xxxx_Szzzz_Pv_yymmddhhmmss
xxx-xxxx is the serial number of the instrument
zzzz is the session ID number
v is the split session partial file number
yymmddhhmmss is the year, month, day, hour, minute, and second of when the split session partial file
started within the session
AethLabs AethLabs microAeth MA Series MA200, MA300, MA350 Operating Manual
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