Ocean Optics Ocean View Install - Manual (Page 31)

3: User Interface
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Control Function
Scans to Average Specifies the number of discrete spectral acquisitions that the device driver
accumulates before OceanView receives a spectrum. The higher the value, the
better the signal-to-noise ratio (S:N). The S:N will improve by the square root of the
number of scans averaged.
Boxcar Width Sets the boxcar smoothing width, a technique that averages across spectral data.
This technique averages a group of adjacent detector elements. A value of 5, for
example, averages each data point with 5 points to its left and 5 points to its right.
The greater this value, the smoother the data and the higher the signal-to-noise
ratio. If the value entered is too high, a loss in spectral resolution will result. The S:N
will improve by the square root of the number of pixels averaged.
Electric Dark Enables or disables the correction of the spectral data for electrical dark signal.
For example, if the first 24 pixels in the spectrometer, while producing an electrical
signal, do not respond to light then this option subtracts the average value of these
first 24 pixels from the entire spectrum.
Nonlinearity*
Correction Enables or disables the detector linearity feature.
Stray Light*
Correction Enables or disables stray light correction.
Trigger Mode Selects the trigger mode for the device. Trigger modes available vary based on the
device being used.
X-Axis Allows you to alter the x-axis units of the current Graph View. Select the desired x-
axis unit in the drop-down menu and click OK to update the graph. Select from the
following:
• Wavelengths displays the wavelength of the x-axis in units of nanometers
• Pixels displays the index number of each element in the spectrometer’s
detector beginning at 0 and ending at n-1 (where n is the total number of
pixels in the device)
• Microns displays the wavelength of the x-axis in units of micrometers
• GigaHertz displays the x-axis frequency in units of GigaHertz (GHz)
• Wavenumber displays the x-axis in units of inverse centimeters (cm
-1
)
Strobe/Lamp Enable Enable this option to turn on the lamp.
GPIO Set the parameters for the GPIO pins. Output determines whether the pin is an
input (not checked) or output (checked). Value automatically checks or unchecks
depending on whether a voltage value is sensed on that pin. Alt is for checking
alternate functions such as Master Clock.
Single Strobe Set the hold-off time and pulse width for the strobe lamp.