Vernier Original LabQuest - Manual (Page 22)

LabQuest Reference
20
Sample Time
The Sample Time adjusts how long the spectrometer collects light for each sample. This
value is set by the calibration routine, so changing it subsequently will ruin the calibration.
Altering this value is useful for intensity measurements to keep peaks in range.
Wavelength Smoothing
Wavelength Smoothing adjusts the number of adjacent readings on either side of a given
value that are used to calculate an average value. Increasing this number will smooth a full
spectrum, effectively reducing the wavelength resolution.
Samples to Average
This sets the number of temporal samples taken to calculate an average. Increasing this value
can improve the signal-to-noise ratio.
Wavelength Range
The Wavelength Range can be reduced before a calibration to optimize the calibration for
that wavelength range. The particular spectrometer model determines the default wavelength
range.
Additional LabQuest Tools
Across the bottom of the screen are icons for Collect, Home, Scientific Calculator,
Keyboard, Sounds, Battery, and the current time.
Tapping the Home icon displays a menu for launching
applications. Periodic Table, Sound Recorder, and
Stopwatch applications are also available. You do not
need to quit LabQuest App to launch another
application.
A standard scientific calculator is called by tapping the
Calculator icon. The calculator uses algebraic notation.
You can use this calculator at any time; to dismiss it, tap
the Calculator icon again. You can copy a calculator
result and paste it into the Notes tab.
A QWERTY keyboard is called and hidden by tapping
the keyboard icon. Often you will not need to summon
the keyboard, as it will be displayed whenever
alphanumeric input is required.
The Speaker icon allows you to adjust the volume of
sounds produced by LabQuest.
Tap the Battery icon to see a status report of battery power.