9. Details of [System] Menu
PV6253-F4E016 45
9.1.5. [File] tab
Specify a file data as the theoretical spectral reflectance of the reference. The file data will be a
reflectance in text format in steps of one [nm]. This allows that spectral reflectance data measured
with another spectrometer, etc., be used as the theoretical spectral reflectance data of the reference.
9.1.6. [Save] button
Saves the theoretical reflectance of the reference currently specified in the window to a file. For
instance, if a fixed value setting is currently specified and its value is 4.0 [%], the theoretical
spectral reflectance data of 4.0 [%] at all the measured wavelengths will be saved in the specified
file name.
Note: For details on the file format, see "12. File Configuration" described further ahead.
9.2. [Sampling] menu
Opens the [Sampling setting] window, where the basic parameters of the USPM spectrometer are
specified. Make setting for the quantity of light reading of the line sensor employed in the USPM
spectrometer. Quantity of light I read by the line sensor is represented by the following equation:
time)Samplinglight x of(Quantity =
∑
samplings ofNumber
I
The quantity of light of the line sensor is subjected to 12-bit A/D conversion. Therefore, if the
quantity of light sampled in one single sampling exceeds 12 bits (actually 4080), saturation will
occur, making it impossible to measure accurate values.
Note: If parameters have been set here, be sure to measure the background and reference once again.
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