Aethlabs microAeth MA200 Operating Manual page 19

5.8. Using the on-board user interface
5.8.1. Overview
The on-board user interface of the microAeth MA Series instruments consitsts of a backlight screen and
three buttons. This interface can be used to configure specific settings and operate the instrument.
5.8.2. Configuration of Instrument Operating Parameters
5.8.2.1. Timebase
The on-board user interface on the front of the microAeth can be used to change the measurement
timebase setting of the instrument.
1) Use the left and right buttons to scroll through the top level menu options to the 'Change Timebase'
option.
2) Press the center button to select the 'Change Timebase' option and to enter the change timebase
submenu.
3) Use the left or right buttons to scroll through timebase value options of 1, 5, 10, 30, 60, or 300
second(s).
4) Press the center button to select the current timebase value option. Once selected, the value is saved
and the user interface menu is automatically returned to the top menu level.
5.8.2.2. Flow setpoint
The on-board user interface on the front of the microAeth can be used to change the sampling flow
setpoint setting of the instrument.
1) Use the left and right buttons to scroll through the top level menu options to the 'Change Flow' option.
2) Press the center button to select the 'Change Flow' option and to enter the change flow submenu.
3) Use the left or right buttons to scroll through flow value options of 0, 50, 100, or 150 ml/min.
4) Press the center button to select the current flow value option. Once selected, the value is saved and
the user interface menu is automatically returned to the top menu level.
5.8.2.3. Tape advance ATN threshold
The on-board user interface on the front of the microAeth can be used to change 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.
Note: The lowest wavelength light source enabled will typically trigger the attenuation (ATN) tape
advance.
1) Use the left and right buttons to scroll through the top level menu options to the 'Change Tape Adv.
ATN' option.
2) Press the center button to select the 'Change Tape Adv. ATN' option and to enter the change submenu.
3) Use the left or right buttons to scroll through attenuation (ATN) threshold tigger values of 1 to 100 in
incriments of 1.
4) Press the center button to select the current attenuation (ATN) threshold tigger value option. Once
selected, the value is saved and the user interface menu is automatically returned to the top menu level.
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5.8.3. Operation and Status
Before starting measurements, it is recommended that the user verify all parameter settings. A description
of each operating parameter and its configuration is described in section 5.6. Instrument Operating
Parameters. Instrument settings can be viewed through the microAeth Manager software, or through
the serial terminal emulator interface using the Display All Settings menu. IMPORTANT: When a new
sampling and measurement session is started, the microAeth will automatically advance the filter
tape cartridge to a new sampling location. If a filter tape cartridge is not installed or is not installed
correctly, sampling and measurement will not start.
5.8.3.1. Start Sampling and Measurements
The on-board user interface on the front of the microAeth is used to start sampling and measurements
using the latest saved settings.
1) Use the left and right buttons to scroll through the top level menu options to the 'Start Measurement'
option.
2) Press the center button to select the 'Start Measurement' option. The microAeth screen will display
"SAMPLER PREPARING". The microAeth will automatically advance the filter tape cartridge to a new
sampling location and run its start up routine. When the measurement period begins, the screen will
display "SAMPLING" and sampling and measurement will begin.
5.8.3.2. Stop Sampling and Measurements
The on-board user interface on the front of the microAeth is used to stop sampling and measurements.
1) While the microAeth is sampling, press and hold the center button for 2 seconds to stop sampling and
measurement. 'STOPPED' will be displayed on the screen and sampling and measurement will finish.
5.8.3.3. Advance Tape
The on-board user interface on the front of the microAeth can be used to manually advance the filter tape.
IMPORTANT: Manually advance the filter tape before a flow calibration to ensure minimal loading of
the sample spots.
1) Use the left and right buttons to scroll through the top level menu options to the 'Advance Tape''
option.
2) Press the center button to select the 'Advance Tape' option. The microAeth will advance the filter tape
cartridge to a new sampling location.
AethLabs AethLabs microAeth MA Series MA200, MA300, MA350 Operating Manual
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